mirror of
git://projects.qi-hardware.com/iris.git
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booting from nand works
This commit is contained in:
Bas Wijnen
parent
e4151e737b
commit
04ed743042
62
init.config
62
init.config
@ -1,46 +1,52 @@
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# driver <name> = '<filename>' load a file into memory to be run priviledged.
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# program <name> = '<filename>' load a file into memory to be run normally.
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#driver driver_lcd = "lcd.elf"
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#driver driver_buzzer = "buzzer.elf"
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driver driver_gpio = "gpio.elf"
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#program alarm = "alarm.elf"
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#program gui = "gui.elf"
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driver nand = "nand.elf"
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#driver sdmmc = "sd+mmc.elf"
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#program partition = "partition.elf"
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#program fat = "fat.elf"
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#program test = "test.elf"
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#driver rtc = "rtc.elf"
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# receive <name> / <type> [, <index>] = <cap> prepare to accept a capability from a named program.
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#receive driver_lcd / Display = display
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#receive driver_lcd / Setting = display_bright
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#receive driver_buzzer / Buzzer = buzzer
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# sysreq <cap> use a capability as the system request keyboard.
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# give <name> / <type> [, <index>] = <cap> give this capability to this program when it requests it.
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# include <file> include a file as another config file.
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# at end of file, the initial threads are killed and the drivers and programs are run as soon as all their dependencies are provided.
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driver driver_gpio = "gpio.elf"
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receive driver_gpio / Keyboard , 0 = keyboard
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receive driver_gpio / Keyboard , 1 = sysreq
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receive driver_gpio / Event = sdmmc_gpio
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#receive alarm / UI = ui
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#receive sdmmc / WString = sdmmc
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#receive partition / WString, 0 = p0
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#receive partition / WString, 1 = p1
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#receive partition / WString, 2 = p2
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#receive partition / WString, 3 = p3
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#receive fat / Directory = root
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# sysreq <cap> use a capability as the system request keyboard.
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sysreq sysreq
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# give <name> / <type> [, <index>] = <cap> give this capability to this program when it requests it.
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driver nand = "nand.elf"
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#driver driver_lcd = "lcd.elf"
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#receive driver_lcd / Display = display
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#receive driver_lcd / Setting = display_bright
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#driver driver_buzzer = "buzzer.elf"
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#receive driver_buzzer / Buzzer = buzzer
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#program alarm = "alarm.elf"
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#receive alarm / UI = ui
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#program gui = "gui.elf"
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#give gui / UI = ui
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#give gui / Display = display
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#give gui / Setting = display_bright
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#give gui / Buzzer = buzzer
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#give gui / Keyboard = keyboard
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#driver sdmmc = "sd+mmc.elf"
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#receive sdmmc / WString = sdmmc
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#give sdmmc / Event = sdmmc_gpio
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#program partition = "partition.elf"
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#receive partition / WString, 0 = p0
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#receive partition / WString, 1 = p1
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#receive partition / WString, 2 = p2
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#receive partition / WString, 3 = p3
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#give partition / WString = sdmmc
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#program fat = "fat.elf"
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#receive fat / Directory = root
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#give fat / WString = p0
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#program test = "test.elf"
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#give test / Directory = root
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# include <file> include a file as another config file.
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# at end of file, the initial threads are killed and the drivers and programs are run as soon as all their dependencies are provided.
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#driver rtc = "rtc.elf"
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@ -558,6 +558,8 @@ static void thread_invoke (unsigned cmd, unsigned target, Iris::Num protected_da
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arch_reboot ()
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case Iris::Thread::PRIV_POWEROFF & REQUEST_MASK:
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arch_poweroff ()
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case Iris::Thread::PRIV_BOOT & REQUEST_MASK:
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arch_boot (c->data[1].l)
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case Iris::Thread::PRIV_PANIC & REQUEST_MASK:
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if c->data[1].l == 0xdeaddead:
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dbg_code.l = 1
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10
iris.hhp
10
iris.hhp
@ -323,6 +323,7 @@ namespace Iris:
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DBG_SEND
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PRIV_REBOOT
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PRIV_POWEROFF
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PRIV_BOOT
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PRIV_PANIC
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// These get/set_info are not arch-specific.
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enum info_type:
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@ -581,6 +582,8 @@ namespace Iris:
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my_thread.call (CAP_MASTER_DIRECT | Thread::PRIV_REBOOT)
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inline void poweroff ():
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my_thread.call (CAP_MASTER_DIRECT | Thread::PRIV_POWEROFF)
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inline void boot (unsigned address):
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my_thread.call (CAP_MASTER_DIRECT | Thread::PRIV_BOOT, address)
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void Receiver::sleep (unsigned value):
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set_alarm (value)
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@ -612,7 +615,6 @@ static void kdebug_num (unsigned n, unsigned digits = 8):
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namespace Iris:
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inline void panic (unsigned code, char const *message = NULL):
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if message:
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kdebug ("**********************************************************************\n")
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kdebug_num (code)
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kdebug_char ('\n')
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kdebug (message)
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@ -626,15 +628,15 @@ namespace Iris:
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inline void debug_num (unsigned num, unsigned base):
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char const *encode = "0123456789abcdef"
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unsigned digits = 1
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unsigned power = base
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while power <= num:
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unsigned power = 1
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while power <= num / base:
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power *= base
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++digits
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for unsigned i = 0; i < digits; ++i:
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power /= base
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unsigned d = num / power
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kdebug_char (encode[d])
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num -= d * power
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power /= base
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inline void debug (const char *f, ...):
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unsigned *last = (unsigned *)&f
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@ -323,6 +323,7 @@ void kPage_arch_update_mapping (kPage *page)
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void arch_register_interrupt (unsigned num, kReceiverP r)
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void arch_reboot ()
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void arch_poweroff ()
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void arch_boot (unsigned address)
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void arch_uncache_page (unsigned page)
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#define assert(x) do { if (!(x)) panic (__LINE__, "assertion failed"); } while (0)
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@ -88,6 +88,7 @@
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#ifndef ASM
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void flush_tlb (unsigned asid)
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void arch_flush_cache ()
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struct kThread_arch:
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unsigned at, v[2], a[4], t[10], s[8], gp, fp, ra, hi, lo, k[2]
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18
mips/boot.S
18
mips/boot.S
@ -25,8 +25,6 @@
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.globl __start
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.set noreorder
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// Note that this code starts at 0xa0000000, even though it is linked for
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// 0x80000000. This means that until the jump below, it must be PIC.
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__start:
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bal 1f
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// For some reason the disassembler considers everything
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@ -36,14 +34,15 @@ start_hack_for_disassembler:
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.word _gp
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1: lw $gp, 0($ra)
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la $sp, kernel_stack + KERNEL_STACK_SIZE
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// Flush cache.
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mtc0 $zero, $CP0_TAG_LO
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lui $v1, 0x8000
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ori $v0, $v1, 0x8000
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1:
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// i-cache index invalidate.
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cache 0, 0($v1)
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cache 1, 0($v1)
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// d-cache store tag. TagLo has the valid bit cleared, so this clears the d-cache.
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cache 9, 0($v1)
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bne $v1, $v0, 1b
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addiu $v1, $v1, 32
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@ -51,19 +50,14 @@ start_hack_for_disassembler:
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li $k0, 0x3
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mtc0 $k0, $CP0_CONFIG, 0
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// Jump into cached code.
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la $t9, 1f
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jr $t9
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nop
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1:
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// From here, the code no longer needs to be PIC.
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la $sp, kernel_stack + KERNEL_STACK_SIZE
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// Clear .bss
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la $a0, _edata
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la $a1, _end
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1: sw $zero, 0($a0)
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bne $a1, $a0, 1b
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addu $a0, 4
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addiu $a0, 4
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// First argument is the memory size.
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la $t9, init
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298
mips/nand.hhp
Normal file
298
mips/nand.hhp
Normal file
@ -0,0 +1,298 @@
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#pypp 0
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// Iris: micro-kernel for a capability-based operating system.
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// mips/nand.hhp: NAND driver functions, split off to be used in two places.
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// The functions are not inline, so this file must be included exactly once per executable that needs it.
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// Copyright 2009 Bas Wijnen <wijnen@debian.org>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// The following defines are taken from mtd/nand.h in the Linux source.
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// Everything not in the nand datasheet is thrown out.
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// Standard NAND flash commands
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#define CMD_READ0 0
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#define CMD_READSTART 0x30
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#define CMD_READID 0x90
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#define CMD_RESET 0xff
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#define CMD_SEQIN 0x80
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#define CMD_PAGEPROG 0x10
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#define CMD_ERASE1 0x60
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#define CMD_ERASE2 0xd0
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#define CMD_RNDIN 0x85
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#define CMD_RNDOUT 5
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#define CMD_RNDOUTSTART 0xe0
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#define CMD_STATUS 0x70
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// Status bits
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#define STATUS_FAIL 0x01
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#define STATUS_READY 0x40
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#define STATUS_WRITABLE 0x80
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static volatile char *command
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static volatile char *address
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static volatile char *data
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static unsigned page_bits
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static unsigned redundant_bits
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static unsigned block_bits
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static unsigned word_size
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static void unbusy ():
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while !(gpio_get_port (2) & (1 << 30)):
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DELAY ()
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static void addr (unsigned d):
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unbusy ()
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*address = d
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static void cmd (unsigned d):
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unbusy ()
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*command = d
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static void wdata (unsigned d):
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unbusy ()
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*data = d
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static unsigned rdata ():
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unbusy ()
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unsigned ret = *data
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return ret
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static void reset ():
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// Set up.
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gpio_as_nand ()
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EMC_NFCSR = EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1
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// Reset nand.
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cmd (CMD_RESET)
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cmd (CMD_READID)
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addr (0)
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unsigned d = rdata ()
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//unsigned maker = d
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d = rdata ()
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//unsigned device = d
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d = rdata ()
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//unsigned internal_chip_number = 1 << (d & 0x3)
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//unsigned cell_type = 2 << ((d >> 2) & 0x3)
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//unsigned simultaneously_programmed_pages = 1 << ((d >> 4) & 0x3)
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//bool can_interleave_program_between_chips = d & 0x40
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//bool can_cache_program = d & 0x80
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d = rdata ()
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page_bits = 10 + (d & 3)
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debug ("page bits: %d\n", page_bits)
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redundant_bits = (d & 4 ? 4 : 3)
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debug ("redundant bits: %d\n", redundant_bits)
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block_bits = 16 + ((d >> 4) & 3)
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debug ("block bits: %d\n", block_bits)
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word_size = (d & 0x40 ? 16 : 8)
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debug ("word size: %d\n", word_size)
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//unsigned serial_access_minimum = (d & 0x80 ? 25 : 50)
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d = rdata ()
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//unsigned num_planes = 1 << ((d >> 2) & 3)
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//unsigned plane_bits = 26 + ((d >> 4) & 7)
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static bool read (unsigned a, char *buffer):
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unsigned column = a & ((1 << page_bits) - 1)
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unsigned row = a >> page_bits
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debug ("reading %x:", a)
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// Read oob information first.
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char error[12]
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// Spare space (starts at 1 << page_bits)
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// 0: unused
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// 2: detect valid data (at least 1 byte == 0 means valid)
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// 5: unused
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// 6: 9-byte ecc of 1st 512 bytes
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// 15: 9-byte ecc of 2nd 512 bytes
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// 24: 9-byte ecc of 3rd 512 bytes
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// 33: 9-byte ecc of 4th 512 bytes
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// 42: unused
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// 64: end of space
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unsigned col = (1 << page_bits) + 2
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cmd (CMD_READ0)
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addr (col)
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addr (col >> 8)
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addr (row)
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addr (row >> 8)
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addr (row >> 16)
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cmd (CMD_READSTART)
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bool valid = false
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for unsigned t = 0; t < 3; ++t:
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if rdata () == 0:
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valid = true
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break
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if !valid:
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debug ("invalid page for nand read: %x\n", a)
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return false
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col = (1 << page_bits) + 6 + 9 * (column >> 9)
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cmd (CMD_RNDOUT)
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addr (col)
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addr (col >> 8)
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cmd (CMD_RNDOUTSTART)
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//debug ("parity data:")
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for unsigned t = 0; t < 9; ++t:
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error[t] = rdata ()
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//debug (" %x", error[t] & 0xff)
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//debug ("\n")
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cmd (CMD_RNDOUT)
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addr (column)
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addr (column >> 8)
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cmd (CMD_RNDOUTSTART)
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EMC_NFINTS = 0
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EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_ERST
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for unsigned t = 0; t < 0x200; ++t:
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buffer[t] = rdata ()
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for unsigned t = 0; t < 9; ++t:
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((volatile char *)&EMC_NFPAR (0))[t] = error[t]
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EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_PRDY
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while !(EMC_NFINTS & EMC_NFINTS_DECF):
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DELAY ()
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unsigned ints = EMC_NFINTS
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if ints & EMC_NFINTS_UNCOR:
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debug ("uncorrectable error in nand at %x\n", a)
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return false
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unsigned errs = (ints & EMC_NFINTS_ERRCNT_MASK) >> EMC_NFINTS_ERRCNT_BIT
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for unsigned i = 0; i < errs; ++i:
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unsigned err = EMC_NFERR (i)
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unsigned index = (err >> 16) - 1
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unsigned mask = err & 0x1ff
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unsigned bit = index * 9
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unsigned offset= bit & 7
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unsigned byte = bit / 8
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debug ("correcting %x on %x+%d\n", mask, byte, offset)
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unsigned data = buffer[byte] | buffer[byte + 1] << 8
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data ^= mask << offset
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buffer[byte] = data
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buffer[byte + 1] = data >> 8
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for unsigned i = 0; i < 0x10; ++i:
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if (buffer[i] & 0xff) < 0x10:
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debug (" 0")
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else:
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debug (" ")
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debug ("%x", buffer[i] & 0xff)
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debug ("\n")
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return true
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static void write (unsigned a, char *buffer):
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unsigned row = a >> page_bits
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//debug ("writing: %x/%x: ", a, row)
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cmd (CMD_SEQIN)
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addr (0)
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addr (0)
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addr (row)
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addr (row >> 8)
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addr (row >> 16)
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char ecc[4][12]
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for unsigned i = 0; i < 0x4; ++i:
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bool all_ff = true
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EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_ENCODING | EMC_NFECR_ERST
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//debug ("writing data from %x\n", (unsigned)buffer + i * 0x200)
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for unsigned j = 0; j < 0x200; ++j:
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wdata (buffer[i * 0x200 + j])
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if all_ff && (buffer[i * 0x200 + j] & 0xff) != 0xff:
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all_ff = false
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if !all_ff:
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while !(EMC_NFINTS & EMC_NFINTS_ENCF):
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DELAY ()
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for unsigned t = 0; t < 9; ++t:
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ecc[i][t] = ((volatile char *)&EMC_NFPAR (0))[t]
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//debug ("parity for %x:", i * 0x200 + a)
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//for unsigned t = 0; t < 9; ++t:
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//debug (" %x", ecc[i][t] & 0xff)
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//kdebug ("\n")
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else:
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for unsigned t = 0; t < 9; ++t:
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ecc[i][t] = 0xff
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// Spare space (starts at 1 << page_bits)
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// 0: unused
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// 2: detect valid data (at least 1 byte == 0 means valid)
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// 5: unused
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// 6: 9-byte ecc of 1st 512 bytes
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// 15: 9-byte ecc of 2nd 512 bytes
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// 24: 9-byte ecc of 3rd 512 bytes
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// 33: 9-byte ecc of 4th 512 bytes
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// 42: unused
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// 64: end of space
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for unsigned i = 0; i < 6; ++i:
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wdata (0)
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for unsigned i = 0; i < 4; ++i:
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for unsigned j = 0; j < 9; ++j:
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wdata (ecc[i][j])
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cmd (CMD_PAGEPROG)
|
||||
// Wait at least 100 ns.
|
||||
DELAY ()
|
||||
cmd (CMD_READ0)
|
||||
addr (0)
|
||||
addr (0)
|
||||
addr (row)
|
||||
addr (row >> 8)
|
||||
addr (row >> 16)
|
||||
cmd (CMD_READSTART)
|
||||
for unsigned i = 0; i < 4; ++i:
|
||||
EMC_NFINTS = 0
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_ERST
|
||||
for unsigned t = 0; t < 0x200; ++t:
|
||||
unsigned r = rdata () & 0xff
|
||||
if r != (buffer[i * 0x200 + t] & 0xff):
|
||||
debug ("program error at %x: %x != %x\n", i * 0x200 + t, buffer[i * 0x200 + t] & 0xff, r)
|
||||
for unsigned t = 0; t < 9; ++t:
|
||||
((volatile char *)&EMC_NFPAR (0))[t] = ecc[i][t]
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_PRDY
|
||||
while !(EMC_NFINTS & EMC_NFINTS_DECF):
|
||||
DELAY ()
|
||||
unsigned ints = EMC_NFINTS
|
||||
if ints & EMC_NFINTS_UNCOR:
|
||||
debug ("uncorrectable error during verify\n")
|
||||
continue
|
||||
unsigned errs = (ints & EMC_NFINTS_ERRCNT_MASK) >> EMC_NFINTS_ERRCNT_BIT
|
||||
for unsigned i = 0; i < errs; ++i:
|
||||
unsigned err = EMC_NFERR (i)
|
||||
unsigned index = (err >> 16) - 1
|
||||
unsigned mask = err & 0x1ff
|
||||
unsigned bit = index * 9
|
||||
unsigned offset= bit & 7
|
||||
unsigned byte = bit / 8
|
||||
debug ("error detected by parity: %x on %x+%d\n", mask, byte, offset)
|
||||
for unsigned i = 0; i < 6; ++i:
|
||||
if rdata () != 0:
|
||||
debug ("extra data not 0 at byte %d\n", i)
|
||||
for unsigned i = 0; i < 4; ++i:
|
||||
for unsigned j = 0; j < 9; ++j:
|
||||
unsigned r = rdata () & 0xff
|
||||
if r != (ecc[i][j] & 0xff):
|
||||
debug ("ecc doesn't match: %x != %x\n", r, ecc[i][j] & 0xff)
|
||||
debug ("nand program %x:", a)
|
||||
for unsigned i = 0; i < 0x10; ++i:
|
||||
if (buffer[i] & 0xff) < 0x10:
|
||||
debug (" 0")
|
||||
else:
|
||||
debug (" ")
|
||||
debug ("%x", buffer[i] & 0xff)
|
||||
debug ("\n")
|
||||
|
||||
static void erase (unsigned a):
|
||||
unsigned row = a >> page_bits
|
||||
cmd (CMD_ERASE1)
|
||||
addr (row)
|
||||
addr (row >> 8)
|
||||
addr (row >> 16)
|
||||
cmd (CMD_ERASE2)
|
||||
debug ("nand erase %d done\n", a)
|
||||
@ -15,50 +15,54 @@
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
start_load = 0xa0600000
|
||||
start_load = 0x80600000
|
||||
load = 0x80000000
|
||||
UDC_BOOT = comment this out for nand boot
|
||||
|
||||
ifdef UDC_BOOT
|
||||
boot_threads = $(standard_boot_programs) $(udc_boot_programs)
|
||||
threadlist = mips/nanonote/threadlist-udc
|
||||
ARCH_CXXFLAGS = -DNUM_THREADS=2
|
||||
all: mips/nanonote/nand-boot.raw test
|
||||
else
|
||||
boot_threads = $(standard_boot_programs) $(sd_boot_programs)
|
||||
threadlist = mips/nanonote/threadlist-sd
|
||||
ARCH_CXXFLAGS = -DNUM_THREADS=4
|
||||
all: mips/nanonote/nand-boot.raw iris-sd.tar
|
||||
iris-sd.tar: $(addprefix fs/,$(addsuffix .elf,$(programs))) mips/start.raw.gz fs/init.config
|
||||
mkimage -A mips -T kernel -a $(start_load) -e a$(shell /bin/sh -c '$(OBJDUMP) -t mips/start.elf | grep __start$$ | cut -b2-8') -n Iris -d mips/start.raw.gz fs/uimage | sed -e 's/:/;/g'
|
||||
cd fs && tar cvf ../$@ uimage init.config $(addsuffix .elf,$(programs)) --dereference
|
||||
endif
|
||||
|
||||
ARCH_CPPFLAGS = -I. -Imips -Imips/nanonote -Wa,-mips32 -DNANONOTE -DUSE_SERIAL
|
||||
CROSS = mipsel-linux-gnu-
|
||||
OBJDUMP = $(CROSS)objdump
|
||||
junk = mdebug.abi32 reginfo comment pdr
|
||||
OBJCOPYFLAGS = $(addprefix --remove-section=.,$(junk))
|
||||
iris.elf: LDFLAGS = --omagic -Ttext $(load)
|
||||
mips/start.elf: LDFLAGS = --omagic -Ttext $(start_load)
|
||||
mips/nanonote/nand-boot.elf: LDFLAGS = --omagic -Ttext 0x80000000
|
||||
|
||||
source/nand.o: mips/nanonote/nand-boot.raw
|
||||
UDC_BOOT = comment this out for sd boot
|
||||
|
||||
arch_iris_sources = mips/interrupts.cc mips/arch.cc
|
||||
boot_sources = mips/init.cc mips/nanonote/board.cc
|
||||
arch_headers = mips/arch.hh mips/nanonote/jz4740.hh mips/nanonote/board.hh
|
||||
arch_headers = mips/arch.hh mips/nanonote/jz4740.hh mips/nanonote/board.hh mips/nand.hh
|
||||
udc_boot_programs = udc
|
||||
sd_boot_programs = sd+mmc partition fat
|
||||
standard_boot_programs = bootinit
|
||||
|
||||
programs = init gpio lcd bsquare ball buzzer metronome elfrun alarm rtc gui nand test $(udc_boot_programs) $(sd_boot_programs) $(standard_boot_programs)
|
||||
|
||||
ARCH_CPPFLAGS = -I. -Imips -Imips/nanonote -Wa,-mips32 -DNANONOTE -DUSE_SERIAL
|
||||
CROSS = mipsel-linux-gnu-
|
||||
OBJDUMP = $(CROSS)objdump
|
||||
junk = mdebug.abi32 reginfo comment pdr
|
||||
OBJCOPYFLAGS = $(addprefix --remove-section=.,$(junk))
|
||||
|
||||
ifdef UDC_BOOT
|
||||
boot_threads = $(standard_boot_programs) $(udc_boot_programs)
|
||||
threadlist = mips/nanonote/threadlist-udc
|
||||
ARCH_CXXFLAGS = -DNUM_THREADS=2
|
||||
all: mips/nanonote/nand-boot.raw test
|
||||
mips/start.o: TARGET =
|
||||
else
|
||||
boot_threads = $(standard_boot_programs) $(sd_boot_programs)
|
||||
threadlist = mips/nanonote/threadlist-sd
|
||||
ARCH_CXXFLAGS = -DNUM_THREADS=4
|
||||
all: mips/nanonote/nand-boot.raw iris-sd.tar
|
||||
mips/start.o: TARGET = -DWRAPPED
|
||||
iris-sd.tar: $(addprefix fs/,$(addsuffix .elf,$(programs))) mips/start.raw.gz fs/init.config
|
||||
mkimage -A mips -T kernel -a $(start_load) -e $(shell /bin/sh -c '$(OBJDUMP) -t mips/start.elf | grep __start$$ | cut -b1-8') -n Iris -d mips/start.raw.gz fs/uimage | sed -e 's/:/;/g'
|
||||
cd fs && tar cvf ../$@ uimage init.config $(addsuffix .elf,$(programs)) --dereference
|
||||
endif
|
||||
|
||||
iris.elf: LDFLAGS = --omagic -Ttext $(load)
|
||||
mips/start.elf: LDFLAGS = --omagic -Ttext $(start_load)
|
||||
mips/nanonote/nand-boot.elf: LDFLAGS = --omagic -Ttext 0x80000000
|
||||
mips/nanonote/nand-boot.o: mips/nand.hh
|
||||
|
||||
source/nand.o: mips/nand.hh mips/nanonote/nand-boot.raw iris-sd.raw
|
||||
|
||||
mips/start.o:mips/start.S Makefile Makefile.arch iris.raw
|
||||
$(CC) $(CPPFLAGS) -DSTART=0xa$(shell /bin/sh -c '$(OBJDUMP) -t iris.elf | grep __start$$ | cut -b2-8') -c $< -o $@
|
||||
$(CC) $(CPPFLAGS) $(TARGET) -DSTART=0x$(shell /bin/sh -c '$(OBJDUMP) -t iris.elf | grep __start$$ | cut -b1-8') -c $< -o $@
|
||||
|
||||
test: mips/start.raw mips/start.elf mips/nanonote/server/usb-server mips/nanonote/sdram-setup.raw $(addsuffix .elf,$(addprefix fs/,$(programs))) fs/init.config
|
||||
echo "reboot $(start_load) 0xa$(shell /bin/sh -c '$(OBJDUMP) -t mips/start.elf | grep __start$$ | cut -b2-8') $<" | nc localhost 5050
|
||||
echo "reboot $(start_load) 0x$(shell /bin/sh -c '$(OBJDUMP) -t mips/start.elf | grep __start$$ | cut -b1-8') $<" | nc localhost 5050
|
||||
|
||||
mips/nanonote/server/usb-server: mips/nanonote/server/usb-server.ccp mips/nanonote/server/Makefile.am mips/nanonote/server/configure.ac devices.hh
|
||||
$(MAKE) -C mips/nanonote/server
|
||||
|
||||
@ -72,10 +72,10 @@ void board_init ():
|
||||
UART0_MCR = 0
|
||||
UART0_SIRCR = 0
|
||||
UART0_UACR = 0
|
||||
UART0_UMR = 1
|
||||
UART0_UMR = 16
|
||||
UART0_LCR = UARTLCR_WLEN_8 | UARTLCR_STOP1 | UARTLCR_DLAB
|
||||
unsigned const baud = 57600
|
||||
unsigned uart_div = 12000000 / baud
|
||||
unsigned uart_div = 12000000 / 16 / baud
|
||||
UART0_DLHR = (uart_div >> 8) & 0xff
|
||||
UART0_DLLR = uart_div & 0xff
|
||||
UART0_LCR = UARTLCR_WLEN_8 | UARTLCR_STOP1
|
||||
@ -83,9 +83,14 @@ void board_init ():
|
||||
kdebug ("\n\nSerial port initialized\n")
|
||||
#endif
|
||||
|
||||
void arch_reboot ():
|
||||
static void sync_serial ():
|
||||
#ifndef NDEBUG
|
||||
// Wait for serial port to be done.
|
||||
while !(UART0_LSR & UARTLSR_TEMT):
|
||||
#endif
|
||||
|
||||
void arch_reboot ():
|
||||
sync_serial ()
|
||||
// Reboot.
|
||||
wdt_select_extalclk ()
|
||||
wdt_select_clk_div1 ()
|
||||
@ -96,8 +101,7 @@ void arch_reboot ():
|
||||
while true:
|
||||
|
||||
void arch_poweroff ():
|
||||
// Wait for serial port to be done.
|
||||
while !(UART0_LSR & UARTLSR_TEMT):
|
||||
sync_serial ()
|
||||
// Power off.
|
||||
// Make sure the rtc is running.
|
||||
cpm_start_rtc ()
|
||||
@ -113,3 +117,9 @@ void arch_poweroff ():
|
||||
// Fall back to reboot.
|
||||
kdebug ("Power down failed! Rebooting instead.\n")
|
||||
arch_reboot ()
|
||||
|
||||
void arch_boot (unsigned address):
|
||||
sync_serial ()
|
||||
// Boot into another kernel.
|
||||
arch_flush_cache ()
|
||||
return ((void (*)())address) ()
|
||||
|
||||
@ -16,8 +16,6 @@
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// The following defines are taken from mtd/nand.h in the Linux source.
|
||||
|
||||
asm volatile ("\t.set noreorder\n"
|
||||
"\t.text\n"
|
||||
"\t.globl __start\n"
|
||||
@ -28,6 +26,8 @@ asm volatile ("\t.set noreorder\n"
|
||||
"\tnop\n"
|
||||
"\t.word _gp\n"
|
||||
"1:\n"
|
||||
"\tori $t0, $zero, 0x0006\n"
|
||||
"\tmtc0 $t0, $12\n"
|
||||
"\tlw $gp, 0($ra)\n"
|
||||
"\tla $sp, stack + 0x1000\n"
|
||||
"\tla $t9, nandboot_start\n"
|
||||
@ -38,160 +38,89 @@ asm volatile ("\t.set noreorder\n"
|
||||
#define __KERNEL__
|
||||
#include <jz4740.hh>
|
||||
|
||||
// Standard NAND flash commands
|
||||
#define CMD_READ0 0
|
||||
#define CMD_READ1 1
|
||||
#define CMD_RNDOUT 5
|
||||
#define CMD_PAGEPROG 0x10
|
||||
#define CMD_READOOB 0x50
|
||||
#define CMD_ERASE1 0x60
|
||||
#define CMD_STATUS 0x70
|
||||
#define CMD_STATUS_MULTI 0x71
|
||||
#define CMD_SEQIN 0x80
|
||||
#define CMD_RNDIN 0x85
|
||||
#define CMD_READID 0x90
|
||||
#define CMD_ERASE2 0xd0
|
||||
#define CMD_RESET 0xff
|
||||
#define DELAY()
|
||||
|
||||
// Extended commands for large page devices
|
||||
#define CMD_READSTART 0x30
|
||||
#define CMD_RNDOUTSTART 0xE0
|
||||
#define CMD_CACHEDPROG 0x15
|
||||
static void debug (unsigned ch):
|
||||
while !(UART0_LSR & UARTLSR_TDRQ):
|
||||
UART0_TDR = ch
|
||||
|
||||
// Status bits
|
||||
#define STATUS_FAIL 0x01
|
||||
#define STATUS_FAIL_N1 0x02
|
||||
#define STATUS_TRUE_READY 0x20
|
||||
#define STATUS_READY 0x40
|
||||
#define STATUS_WP 0x80
|
||||
static void debug_num (unsigned num, unsigned base, unsigned min_digits = 1):
|
||||
char const *encode = "0123456789abcdef"
|
||||
unsigned digits = 1
|
||||
unsigned power = 1
|
||||
while power <= num / base || min_digits > digits:
|
||||
power *= base
|
||||
++digits
|
||||
for unsigned i = 0; i < digits; ++i:
|
||||
unsigned d = num / power
|
||||
debug (encode[d])
|
||||
num -= d * power
|
||||
power /= base
|
||||
|
||||
static volatile char *command
|
||||
static volatile char *address
|
||||
static volatile char *data
|
||||
static void debug (char const *f, ...):
|
||||
unsigned *last = (unsigned *)&f
|
||||
while *f:
|
||||
if *f == '%':
|
||||
++f
|
||||
switch *f:
|
||||
case '%':
|
||||
debug ('%')
|
||||
break
|
||||
case 'd':
|
||||
++last
|
||||
debug_num (*last, 10)
|
||||
break
|
||||
case 'x':
|
||||
++last
|
||||
debug_num (*last, 0x10)
|
||||
break
|
||||
case 's':
|
||||
++last
|
||||
char *str = (char*)*last
|
||||
while *str:
|
||||
debug (*str++)
|
||||
break
|
||||
default:
|
||||
debug ("warning: invalid character in dbg format string\n")
|
||||
break
|
||||
else:
|
||||
debug (*f)
|
||||
++f
|
||||
|
||||
static unsigned page_bits
|
||||
static unsigned redundant_bits
|
||||
static unsigned block_bits
|
||||
static unsigned word_size
|
||||
#define debug_line() debug ("nand-boot line %d\n", __LINE__)
|
||||
|
||||
static void unbusy ():
|
||||
while !(gpio_get_port (2) & (1 << 30)):
|
||||
// Do nothing.
|
||||
// Delay.
|
||||
for unsigned i = 0; i < 1000; ++i:
|
||||
gpio_set (0, 0)
|
||||
#include "nand.hh"
|
||||
|
||||
static void addr (unsigned d):
|
||||
unbusy ()
|
||||
*address = d
|
||||
unbusy ()
|
||||
|
||||
static void cmd (unsigned d):
|
||||
unbusy ()
|
||||
*command = d
|
||||
unbusy ()
|
||||
|
||||
static void wdata (unsigned d):
|
||||
unbusy ()
|
||||
*data = d
|
||||
unbusy ()
|
||||
|
||||
static unsigned rdata ():
|
||||
unbusy ()
|
||||
unsigned ret = *data
|
||||
unbusy ()
|
||||
return ret
|
||||
|
||||
// Reset nand controller.
|
||||
static void reset ():
|
||||
unsigned base = 0xa0000000 + 0x18000000
|
||||
data = (volatile char *)base
|
||||
command = (volatile char *)(base + 0x8000)
|
||||
address = (volatile char *)(base + 0x10000)
|
||||
|
||||
// Set up.
|
||||
gpio_as_nand ()
|
||||
EMC_NFCSR = EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1
|
||||
|
||||
// Reset nand.
|
||||
cmd (CMD_RESET)
|
||||
|
||||
cmd (CMD_READID)
|
||||
addr (0)
|
||||
unsigned d = rdata ()
|
||||
//unsigned maker = d
|
||||
d = rdata ()
|
||||
//unsigned device = d
|
||||
d = rdata ()
|
||||
//unsigned internal_chip_number = 1 << (d & 0x3)
|
||||
//unsigned cell_type = 2 << ((d >> 2) & 0x3)
|
||||
//unsigned simultaneously_programmed_pages = 1 << ((d >> 4) & 0x3)
|
||||
//bool can_interleave_program_between_chips = d & 0x40
|
||||
//bool can_cache_program = d & 0x80
|
||||
d = rdata ()
|
||||
page_bits = 10 + (d & 3)
|
||||
redundant_bits = (d & 4 ? 4 : 3)
|
||||
block_bits = 16 + ((d >> 4) & 3)
|
||||
word_size = (d & 0x40 ? 16 : 8)
|
||||
//unsigned serial_access_minimum = (d & 0x80 ? 25 : 50)
|
||||
d = rdata ()
|
||||
//unsigned num_planes = 1 << ((d >> 2) & 3)
|
||||
//unsigned plane_bits = 26 + ((d >> 4) & 7)
|
||||
|
||||
// Read 512 bytes from nand and store them into buffer. a must be aligned.
|
||||
// Return value is true if the oob claims there is valid data.
|
||||
static bool read (unsigned a, char *buffer):
|
||||
unsigned column = a & ((1 << page_bits) - 1)
|
||||
unsigned row = a >> page_bits
|
||||
cmd (CMD_READ0)
|
||||
addr (column)
|
||||
addr (column >> 8)
|
||||
addr (row)
|
||||
addr (row >> 8)
|
||||
addr (row >> 16)
|
||||
cmd (CMD_READSTART)
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_ERST
|
||||
for unsigned t = 0; t < 0x200; ++t:
|
||||
buffer[t] = rdata ()
|
||||
EMC_NFECR = EMC_NFECR_RS | EMC_NFECR_RS_DECODING
|
||||
char error[9]
|
||||
// Spare space (starts at 1 << page_bits)
|
||||
// 0: unused
|
||||
// 2: detect valid data (at least 1 byte == 0 means valid)
|
||||
// 5: unused
|
||||
// 6: 9-byte ecc of 1st 512 bytes
|
||||
// 15: 9-byte ecc of 2nd 512 bytes
|
||||
// 24: 9-byte ecc of 3rd 512 bytes
|
||||
// 33: 9-byte ecc of 4th 512 bytes
|
||||
// 42: unused
|
||||
// 64: end of space
|
||||
unsigned validcol = (1 << page_bits) + 2
|
||||
bool valid = false
|
||||
cmd (CMD_RNDOUT)
|
||||
addr (validcol)
|
||||
addr (validcol >> 8)
|
||||
cmd (CMD_RNDOUTSTART)
|
||||
for unsigned t = 0; t < 3; ++t:
|
||||
valid = rdata () == 0 || valid
|
||||
unsigned errcol = (1 << page_bits) + (column >> 9) * 9 + 6
|
||||
cmd (CMD_RNDOUT)
|
||||
addr (errcol)
|
||||
addr (errcol >> 8)
|
||||
cmd (CMD_RNDOUTSTART)
|
||||
for unsigned t = 0; t < 9; ++t:
|
||||
error[t] = rdata ()
|
||||
EMC_NFPAR (0) = ((unsigned *)error)[0]
|
||||
EMC_NFPAR (1) = ((unsigned *)error)[1]
|
||||
EMC_NFPAR (2) = error[9]
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_PRDY
|
||||
while !(EMC_NFINTS & EMC_NFINTS_DECF):
|
||||
// Do nothing.
|
||||
unsigned errs = (EMC_NFINTS & EMC_NFINTS_ERRCNT_MASK) >> EMC_NFINTS_ERRCNT_BIT
|
||||
for unsigned i = 0; i < errs; ++i:
|
||||
buffer[EMC_NFERR (i) >> 16] ^= EMC_NFERR (i) & 0xff
|
||||
static void setup_uart ():
|
||||
cpm_start_uart0 ()
|
||||
gpio_as_uart0 ()
|
||||
UART0_IER = 0
|
||||
UART0_FCR = 0
|
||||
UART0_MCR = 0
|
||||
UART0_SIRCR = 0
|
||||
UART0_UACR = 0
|
||||
UART0_UMR = 16
|
||||
UART0_LCR = UARTLCR_WLEN_8 | UARTLCR_STOP1 | UARTLCR_DLAB
|
||||
unsigned const baud = 57600
|
||||
unsigned uart_div = 12000000 / 16 / baud
|
||||
UART0_DLHR = (uart_div >> 8) & 0xff
|
||||
UART0_DLLR = uart_div & 0xff
|
||||
UART0_LCR = UARTLCR_WLEN_8 | UARTLCR_STOP1
|
||||
UART0_FCR = UARTFCR_UUE | UARTFCR_FE | UARTFCR_RFLS | UARTFCR_TFLS
|
||||
debug ("\n\nNand-boot: serial port initialized\n")
|
||||
|
||||
extern "C":
|
||||
void nandboot_start ():
|
||||
unsigned base = 0x18000000 + 0xa0000000
|
||||
data = (volatile char *)base
|
||||
command = (volatile char *)(base + 0x8000)
|
||||
address = (volatile char *)(base + 0x10000)
|
||||
pll_init ()
|
||||
cpm_start_all ()
|
||||
gpio_as_sdram_16bit ()
|
||||
gpio_as_nand ()
|
||||
setup_sdram ()
|
||||
setup_uart ()
|
||||
reset ()
|
||||
// Load contents of nand flash (from 0x4000) into 0xa0600000;
|
||||
unsigned a = 0x4000
|
||||
@ -199,8 +128,16 @@ extern "C":
|
||||
while read (a, (char *)target):
|
||||
a += 0x200
|
||||
target += 0x200
|
||||
// Tell about what'll happen.
|
||||
debug ("Jumping to a0600000:\n")
|
||||
for unsigned d = 0; d < 0x40; ++d:
|
||||
debug (" ")
|
||||
debug_num (((char *)0xa0600000)[d] & 0xff, 16, 2)
|
||||
debug ('\n')
|
||||
// Wait for the serial port to finish.
|
||||
while !(UART0_LSR & UARTLSR_TEMT):
|
||||
// Then jump to 0xa0600000.
|
||||
return ((void (*)())0xa0600000) ()
|
||||
((void (*)())0xa0600000) ()
|
||||
|
||||
unsigned char stack[0x1000]
|
||||
|
||||
|
||||
64
mips/start.S
64
mips/start.S
@ -15,32 +15,70 @@
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
// This program is a wrapper around the kernel.
|
||||
// It is linked for loading at 0x80600000; however, it it position-independant and may be loaded anywhere.
|
||||
// It does not use gp. This means that li and la must not be used.
|
||||
.globl __start
|
||||
.set noreorder
|
||||
|
||||
__start:
|
||||
// Set t0 to uart0 txd
|
||||
lui $t0, 0xb003
|
||||
|
||||
bal 1f
|
||||
// For some reason the disassembler considers everything
|
||||
// after __start non-code until the next label. So I add a label.
|
||||
start_hack_for_disassembler:
|
||||
nop
|
||||
.word _gp
|
||||
1: lw $gp, 0($ra)
|
||||
lui $a0, 0x8000
|
||||
base:
|
||||
.word image_end - image
|
||||
1:
|
||||
// Set kseg0 to uncachable.
|
||||
ori $t0, $zero, 2
|
||||
mtc0 $t0, $16, 0
|
||||
|
||||
li $a0, 0xa0000000
|
||||
la $a1, image
|
||||
la $a2, image_end
|
||||
// Flush cache.
|
||||
lui $v1, 0x8000
|
||||
ori $v0, $v1, 0x8000
|
||||
1:
|
||||
// i-cache index invalidate.
|
||||
cache 0, 0($v1)
|
||||
// d-cache index write-back invalidate.
|
||||
cache 1, 0($v1)
|
||||
bne $v1, $v0, 1b
|
||||
addiu $v1, $v1, 32
|
||||
|
||||
1: lw $a3, 0($a1)
|
||||
sw $a3, 0($a0)
|
||||
addiu $a1, 4
|
||||
bne $a1, $a2, 1b
|
||||
addiu $a0, 4
|
||||
// Set a1 to start address of image.
|
||||
addiu $a1, $ra, image - base
|
||||
|
||||
li $t9, START
|
||||
jr $t9
|
||||
// Set a2 to end address of image.
|
||||
lw $a2, 0($ra)
|
||||
add $a2, $a2, $a1
|
||||
|
||||
// Set t9 to the entry point.
|
||||
lui $t9, START >> 16
|
||||
ori $t9, $t9, START & 0xffff
|
||||
|
||||
// Put the copying code at the end, to prevent overwriting itself.
|
||||
// The copy goes to the start of RAM, so the target is never larger than the source.
|
||||
jr $a2
|
||||
nop
|
||||
|
||||
image:
|
||||
.incbin "iris.raw"
|
||||
image_end:
|
||||
// Copy the image to the start of RAM.
|
||||
// a0 is the destination: 0x80000000, counting up.
|
||||
// a1 is the start of the image, counting up.
|
||||
// a2 is the end of the image, not changing.
|
||||
// a3 is the working register to do the move.
|
||||
1: lw $a3, 0($a1)
|
||||
addiu $a1, $a1, 4
|
||||
sw $a3, 0($a0)
|
||||
bne $a1, $a2, 1b
|
||||
addiu $a0, $a0, 4
|
||||
// Done copying.
|
||||
|
||||
// Make the jump to the new code.
|
||||
jr $t9
|
||||
nop
|
||||
|
||||
@ -87,6 +87,7 @@ static void print_addr (char const *t, unsigned addr, bool last = false):
|
||||
#endif
|
||||
|
||||
static void panic_message (unsigned n, const char *line, char const *name, char const *message):
|
||||
kdebug ("**********************************************************************\n")
|
||||
unsigned vaddr, epc
|
||||
cp0_get (CP0_BAD_V_ADDR, vaddr)
|
||||
cp0_get (CP0_EPC, epc)
|
||||
|
||||
269
source/nand.ccp
269
source/nand.ccp
@ -16,74 +16,29 @@
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
#define DELAY Iris::schedule
|
||||
|
||||
#include "devices.hh"
|
||||
#define ARCH
|
||||
#include "arch.hh"
|
||||
#define debug Iris::debug
|
||||
#include "nand.hh"
|
||||
|
||||
// The following defines are taken from mtd/nand.h in the Linux source.
|
||||
extern "C":
|
||||
extern char file_start, file_mid, file_end
|
||||
|
||||
// Standard NAND flash commands
|
||||
#define CMD_READ0 0
|
||||
#define CMD_READSTART 0x30
|
||||
Iris::Num start ():
|
||||
//kdebug ("starting nand operation in 10 seconds\n")
|
||||
//Iris::sleep (10 * HZ)
|
||||
|
||||
#define CMD_READID 0x90
|
||||
map_emc ()
|
||||
map_gpio ()
|
||||
|
||||
#define CMD_RESET 0xff
|
||||
// Arbitrary addresses where the pages are mapped.
|
||||
command = (volatile char *)0x15000
|
||||
address = (volatile char *)0x16000
|
||||
data = (volatile char *)0x17000
|
||||
|
||||
#define CMD_SEQIN 0x80
|
||||
#define CMD_PAGEPROG 0x10
|
||||
|
||||
#define CMD_ERASE1 0x60
|
||||
#define CMD_ERASE2 0xd0
|
||||
|
||||
#define CMD_RNDIN 0x85
|
||||
|
||||
#define CMD_RNDOUT 5
|
||||
#define CMD_RNDOUTSTART 0xE0
|
||||
|
||||
#define CMD_STATUS 0x70
|
||||
|
||||
// Status bits
|
||||
#define STATUS_FAIL 0x01
|
||||
#define STATUS_READY 0x40
|
||||
#define STATUS_WRITABLE 0x80
|
||||
|
||||
static volatile char *command
|
||||
static volatile char *address
|
||||
static volatile char *data
|
||||
|
||||
static unsigned page_bits
|
||||
static unsigned redundant_bits
|
||||
static unsigned block_bits
|
||||
static unsigned word_size
|
||||
|
||||
static void unbusy ():
|
||||
while !(gpio_get_port (2) & (1 << 30)):
|
||||
Iris::schedule ()
|
||||
Iris::schedule ()
|
||||
|
||||
static void addr (unsigned d):
|
||||
unbusy ()
|
||||
*address = d
|
||||
unbusy ()
|
||||
|
||||
static void cmd (unsigned d):
|
||||
unbusy ()
|
||||
*command = d
|
||||
unbusy ()
|
||||
|
||||
static void wdata (unsigned d):
|
||||
unbusy ()
|
||||
*data = d
|
||||
unbusy ()
|
||||
|
||||
static unsigned rdata ():
|
||||
unbusy ()
|
||||
unsigned ret = *data
|
||||
unbusy ()
|
||||
return ret
|
||||
|
||||
static void reset ():
|
||||
Iris::Page data_page = Iris::my_memory.create_page ()
|
||||
Iris::Page command_page = Iris::my_memory.create_page ()
|
||||
Iris::Page address_page = Iris::my_memory.create_page ()
|
||||
@ -101,196 +56,27 @@ static void reset ():
|
||||
Iris::free_cap (command_page)
|
||||
Iris::free_cap (address_page)
|
||||
|
||||
// Set up.
|
||||
gpio_as_nand ()
|
||||
EMC_NFCSR = EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1
|
||||
|
||||
// Reset nand.
|
||||
cmd (CMD_RESET)
|
||||
|
||||
cmd (CMD_READID)
|
||||
addr (0)
|
||||
unsigned d = rdata ()
|
||||
//unsigned maker = d
|
||||
d = rdata ()
|
||||
//unsigned device = d
|
||||
d = rdata ()
|
||||
//unsigned internal_chip_number = 1 << (d & 0x3)
|
||||
//unsigned cell_type = 2 << ((d >> 2) & 0x3)
|
||||
//unsigned simultaneously_programmed_pages = 1 << ((d >> 4) & 0x3)
|
||||
//bool can_interleave_program_between_chips = d & 0x40
|
||||
//bool can_cache_program = d & 0x80
|
||||
d = rdata ()
|
||||
page_bits = 10 + (d & 3)
|
||||
Iris::debug ("page bits: %d\n", page_bits)
|
||||
redundant_bits = (d & 4 ? 4 : 3)
|
||||
Iris::debug ("redundant bits: %d\n", redundant_bits)
|
||||
block_bits = 16 + ((d >> 4) & 3)
|
||||
Iris::debug ("block bits: %d\n", block_bits)
|
||||
word_size = (d & 0x40 ? 16 : 8)
|
||||
Iris::debug ("word size: %d\n", word_size)
|
||||
//unsigned serial_access_minimum = (d & 0x80 ? 25 : 50)
|
||||
d = rdata ()
|
||||
//unsigned num_planes = 1 << ((d >> 2) & 3)
|
||||
//unsigned plane_bits = 26 + ((d >> 4) & 7)
|
||||
|
||||
static bool read (unsigned a, char *buffer):
|
||||
unsigned column = a & ((1 << page_bits) - 1)
|
||||
unsigned row = a >> page_bits
|
||||
//Iris::debug ("reading: %x/%x/%x: ", a, row, column)
|
||||
// Read oob information first.
|
||||
char error[12]
|
||||
// Spare space (starts at 1 << page_bits)
|
||||
// 0: unused
|
||||
// 2: detect valid data (at least 1 byte == 0 means valid)
|
||||
// 5: unused
|
||||
// 6: 9-byte ecc of 1st 512 bytes
|
||||
// 15: 9-byte ecc of 2nd 512 bytes
|
||||
// 24: 9-byte ecc of 3rd 512 bytes
|
||||
// 33: 9-byte ecc of 4th 512 bytes
|
||||
// 42: unused
|
||||
// 64: end of space
|
||||
unsigned col = (1 << page_bits) + 2
|
||||
cmd (CMD_READ0)
|
||||
addr (col)
|
||||
addr (col >> 8)
|
||||
addr (row)
|
||||
addr (row >> 8)
|
||||
addr (row >> 16)
|
||||
cmd (CMD_READSTART)
|
||||
bool valid = false
|
||||
for unsigned t = 0; t < 3; ++t:
|
||||
if rdata () == 0:
|
||||
valid = true
|
||||
break
|
||||
if !valid:
|
||||
return false
|
||||
col = (1 << page_bits) + 6 + 9 * (column >> 9)
|
||||
cmd (CMD_RNDOUT)
|
||||
addr (col)
|
||||
addr (col >> 8)
|
||||
cmd (CMD_RNDOUTSTART)
|
||||
for unsigned t = 0; t < 9; ++t:
|
||||
error[t] = rdata ()
|
||||
cmd (CMD_RNDOUT)
|
||||
addr (column)
|
||||
addr (column >> 8)
|
||||
cmd (CMD_RNDOUTSTART)
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_ERST
|
||||
for unsigned t = 0; t < 0x200; ++t:
|
||||
buffer[t] = rdata ()
|
||||
EMC_NFPAR (0) = ((unsigned *)error)[0]
|
||||
EMC_NFPAR (1) = ((unsigned *)error)[1]
|
||||
EMC_NFPAR (2) = error[9]
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_DECODING | EMC_NFECR_PRDY
|
||||
while !(EMC_NFINTS & EMC_NFINTS_DECF):
|
||||
Iris::schedule ()
|
||||
unsigned errs = (EMC_NFINTS & EMC_NFINTS_ERRCNT_MASK) >> EMC_NFINTS_ERRCNT_BIT
|
||||
for unsigned i = 0; i < errs; ++i:
|
||||
Iris::debug ("correcting %x on %x\n", EMC_NFERR (i) & 0xff, EMC_NFERR (i) >> 16)
|
||||
buffer[EMC_NFERR (i) >> 16] ^= EMC_NFERR (i) & 0xff
|
||||
|
||||
static void write (unsigned a, char *buffer):
|
||||
kdebug_line ()
|
||||
unsigned row = a >> page_bits
|
||||
kdebug_line ()
|
||||
//Iris::debug ("writing: %x/%x: ", a, row)
|
||||
cmd (CMD_SEQIN)
|
||||
kdebug_line ()
|
||||
addr (0)
|
||||
kdebug_line ()
|
||||
addr (0)
|
||||
kdebug_line ()
|
||||
addr (row)
|
||||
kdebug_line ()
|
||||
addr (row >> 8)
|
||||
kdebug_line ()
|
||||
addr (row >> 16)
|
||||
kdebug_line ()
|
||||
char ecc[4][12]
|
||||
for unsigned i = 0; i < 0x4; ++i:
|
||||
kdebug_line ()
|
||||
EMC_NFECR = EMC_NFECR_ECCE | EMC_NFECR_RS | EMC_NFECR_RS_ENCODING | EMC_NFECR_ERST
|
||||
Iris::debug ("writing data from %x\n", (unsigned)buffer + i * 0x200)
|
||||
for unsigned j = 0; j < 0x200; ++j:
|
||||
wdata (buffer[i * 0x200 + j])
|
||||
kdebug_line ()
|
||||
while !(EMC_NFINTS & EMC_NFINTS_ENCF):
|
||||
Iris::schedule ()
|
||||
kdebug_line ()
|
||||
((unsigned *)ecc[i])[0] = EMC_NFPAR (0)
|
||||
kdebug_line ()
|
||||
((unsigned *)ecc[i])[1] = EMC_NFPAR (1)
|
||||
kdebug_line ()
|
||||
ecc[i][9] = EMC_NFPAR (2)
|
||||
kdebug_line ()
|
||||
// Spare space (starts at 1 << page_bits)
|
||||
// 0: unused
|
||||
// 2: detect valid data (at least 1 byte == 0 means valid)
|
||||
// 5: unused
|
||||
// 6: 9-byte ecc of 1st 512 bytes
|
||||
// 15: 9-byte ecc of 2nd 512 bytes
|
||||
// 24: 9-byte ecc of 3rd 512 bytes
|
||||
// 33: 9-byte ecc of 4th 512 bytes
|
||||
// 42: unused
|
||||
// 64: end of space
|
||||
for unsigned i = 0; i < 6; ++i:
|
||||
wdata (0)
|
||||
kdebug_line ()
|
||||
for unsigned i = 0; i < 4; ++i:
|
||||
for unsigned j = 0; j < 9; ++j:
|
||||
wdata (ecc[i][j])
|
||||
kdebug_line ()
|
||||
cmd (CMD_PAGEPROG)
|
||||
kdebug_line ()
|
||||
Iris::debug ("nand program %d done\n", a)
|
||||
|
||||
static void erase (unsigned a):
|
||||
unsigned row = a >> page_bits
|
||||
cmd (CMD_ERASE1)
|
||||
addr (row)
|
||||
addr (row >> 8)
|
||||
addr (row >> 16)
|
||||
cmd (CMD_ERASE2)
|
||||
Iris::debug ("nand erase %d done\n", a)
|
||||
|
||||
extern "C":
|
||||
extern char file_start, file_end
|
||||
|
||||
Iris::Num start ():
|
||||
//kdebug ("starting nand operation in 10 seconds\n")
|
||||
//Iris::sleep (10 * HZ)
|
||||
map_emc ()
|
||||
map_gpio ()
|
||||
|
||||
// Arbitrary addresses where the pages are mapped.
|
||||
command = (volatile char *)0x15000
|
||||
address = (volatile char *)0x16000
|
||||
data = (volatile char *)0x17000
|
||||
|
||||
reset ()
|
||||
|
||||
|
||||
#if 0
|
||||
#if 1
|
||||
erase (0)
|
||||
kdebug_line ()
|
||||
char *source = &file_start
|
||||
kdebug_line ()
|
||||
unsigned a = 0x0000
|
||||
kdebug_line ()
|
||||
while source < &file_end:
|
||||
kdebug_line ()
|
||||
unsigned a = 0
|
||||
while source < &file_mid:
|
||||
write (a, source)
|
||||
a += 0x800
|
||||
source += 0x800
|
||||
source = &file_mid
|
||||
a = 0x4000
|
||||
while source < &file_end:
|
||||
write (a, source)
|
||||
a += 0x800
|
||||
source += 0x800
|
||||
kdebug_line ()
|
||||
#endif
|
||||
|
||||
char buffer[0x800]
|
||||
|
||||
kdebug_line ()
|
||||
char buffer[0x200]
|
||||
// Send nand contents to serial port.
|
||||
for unsigned a = 0; a < 0x2000; a += 0x200:
|
||||
for unsigned a = 0; a < 0x400; a += 0x200:
|
||||
read (a, buffer)
|
||||
for unsigned s = 0; s < 0x8; ++s:
|
||||
for unsigned t = 0; t < 0x40; ++t:
|
||||
@ -303,9 +89,12 @@ Iris::Num start ():
|
||||
|
||||
asm volatile ("\t.set noreorder\n"
|
||||
"\t.globl file_start\n"
|
||||
"\t.globl file_mid\n"
|
||||
"\t.globl file_end\n"
|
||||
"\t.text\n"
|
||||
"file_start:\n"
|
||||
"\t.incbin \"mips/nanonote/nand-boot.raw\"\n"
|
||||
"file_mid:\n"
|
||||
"\t.incbin \"iris-sd.raw\"\n"
|
||||
"file_end:\n"
|
||||
".set reorder")
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user