mirror of
git://projects.qi-hardware.com/iris.git
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129 lines
3.5 KiB
COBOL
129 lines
3.5 KiB
COBOL
#pypp 0
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// vim: set filetype=cpp ://
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// Iris: micro-kernel for a capability-based operating system.
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// mips/nanonote/board.ccp: nanonote-specific definitions.
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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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#define ARCH
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#define INIT
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#include "kernel.hh"
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void board_init ():
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pll_init ()
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// Stop all clocks, except the RTC and timer interrupt source.
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CPM_CLKGR = 0x7fff & ~(CPM_CLKGR_RTC | CPM_CLKGR_TCU)
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// Make sure the rtc is able to boot the device.
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while !rtc_write_ready ():
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rtc_enabled ()
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while !rtc_write_ready ():
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// Set wakeup assertion time, so it actually wakes up.
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rtc_set_hrcr_val (0xfe0)
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while !rtc_write_ready ():
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// Set glitch detection to a low value.
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rtc_set_hwfcr_val (0x1e0)
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while !rtc_write_ready ():
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// Allow rtc alarm to wake up device.
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rtc_enable_alarm_wakeup ()
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while !rtc_write_ready ():
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// sdram memory.
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gpio_as_sdram_16bit ()
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// flash memory.
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gpio_as_nand ()
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// sound controller.
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gpio_as_aic ()
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// micro-sd controller.
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gpio_as_msc ()
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// display.
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gpio_as_lcd_16bit ()
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// buzzer.
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gpio_as_pwm4 ()
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// Set up memory.
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setup_sdram ()
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// Use some gpio pins for lcd.
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gpio_as_gpio (2, (1 << 21) | (1 << 22) | (1 << 23))
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gpio_as_output (2, (1 << 21) | (1 << 22) | (1 << 23))
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// And some for sd/mmc.
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gpio_as_gpio (3, (1 << 0) | (1 << 2))
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gpio_as_output (3, 1 << 2)
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gpio_as_input (3, 1 << 0)
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gpio_disable_pull (3, (1 << 0) | (1 << 2))
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// Disable power to sd/mmc by default.
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gpio_set (3, 1 << 2)
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// Set up keyboard: this breaks uart receive.
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gpio_as_gpio (3, 0x05fc0000)
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// Set up timed interrupts.
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tcu_start_timer_clock (0)
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tcu_stop_counter (0)
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tcu_select_extalclk (0)
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tcu_select_clk_div4 (0)
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tcu_disable_pwm_output (0)
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tcu_set_full_data (0, JZ_EXTAL / HZ / 4)
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tcu_mask_half_match_irq (0)
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tcu_clear_full_match_flag (0)
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tcu_unmask_full_match_irq (0)
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tcu_start_counter (0)
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#ifndef NDEBUG
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setup_uart ()
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kdebug ("\n\nSerial port initialized\n")
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#endif
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static void sync_serial ():
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#ifndef NDEBUG
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// Wait for serial port to be done.
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while !(UART0_LSR & UARTLSR_TEMT):
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#endif
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void arch_reboot ():
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sync_serial ()
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// Reboot.
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wdt_select_extalclk ()
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wdt_select_clk_div1 ()
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wdt_set_data (1)
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wdt_set_count (0)
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wdt_start ()
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// Wait for wdt to trigger reboot.
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while true:
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void arch_poweroff ():
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// Make sure the rtc is running; it wakes the device up.
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cpm_start_rtc ()
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while !rtc_write_ready ():
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rtc_enabled ()
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while !rtc_write_ready ():
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rtc_set_hwfcr_val (0x1e0)
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while !rtc_write_ready ():
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rtc_set_hrcr_val (0x7f)
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while !rtc_write_ready ():
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kdebug ("Power down.\n")
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sync_serial ()
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rtc_power_down ()
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// Wait for power down to work.
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while true:
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asm ("wait")
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void arch_suspend ():
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sync_serial ()
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// Suspend the system: go into SLEEP mode.
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cpm_sleep_mode ()
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asm ("wait")
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cpm_idle_mode ()
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// Boot into another kernel.
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void arch_boot (unsigned address, unsigned arg):
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sync_serial ()
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arch_flush_cache ()
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((void (*)(unsigned))address) (arg)
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