mirror of
git://projects.qi-hardware.com/iris.git
synced 2025-04-21 12:27:27 +03:00
Make it compile again; fixed poweroff problem
This commit is contained in:
Bas Wijnen
@@ -23,7 +23,6 @@ void kThread_arch_init (kThread *thread):
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thread->arch.at = 0
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for unsigned i = 0; i < 2; ++i:
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thread->arch.v[i] = 0
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thread->arch.k[i] = 0
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for unsigned i = 0; i < 4; ++i:
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thread->arch.a[i] = 0
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for unsigned i = 0; i < 10; ++i:
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@@ -99,16 +98,12 @@ unsigned *kThread_arch_info (kThread *thread, unsigned num):
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case 25:
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return &thread->arch.t[9]
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case 26:
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return &thread->arch.k[0]
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case 27:
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return &thread->arch.k[1]
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case 28:
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return &thread->arch.gp
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case 29:
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case 27:
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return &thread->sp
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case 30:
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case 28:
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return &thread->arch.fp
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case 31:
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case 29:
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return &thread->arch.ra
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default:
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return NULL
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@@ -83,7 +83,6 @@
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#define SAVE_RA (SAVE_FP + 4)
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#define SAVE_HI (SAVE_RA + 4)
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#define SAVE_LO (SAVE_HI + 4)
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#define SAVE_K (SAVE_LO + 4)
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#ifndef ASM
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@@ -91,7 +90,7 @@ 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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unsigned at, v[2], a[4], t[10], s[8], gp, fp, ra, hi, lo
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// The following is used for page mapping.
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// Each Memory has a directory with 0x400 page tables.
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222
mips/entry.S
222
mips/entry.S
@@ -32,81 +32,80 @@
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addr_000:
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#if 0
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// TLB refill
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bne $zero, $k1, slow_refill
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nop
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bne $zero, $k0, slow_refill
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lw $k1, -0xd94($zero)
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lui $k0, 0x8000
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lw $k1, 0x174($k0) // directory
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mfc0 $k0, $CP0_ENTRY_HI
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srl $k0, $k0, 19
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and $k0, $k0, 0x3fc
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and $k0, $k0, 0xffc
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addu $k0, $k0, $k1
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beq $zero, $k0, zero_refill
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lw $k0, 0($k0)
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mfc0 $k1, $CP0_ENTRY_HI
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srl $k1, $k1, 10
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and $k1, $k1, 0x1f8
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and $k1, $k1, 0xff8
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add $k0, $k0, $k1
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lw $k1, 0($k0)
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mtc0 $k1, $CP0_ENTRY_LO0
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lw $k1, 4($k0)
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mtc0 $k1, $CP0_ENTRY_LO1
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1: tlbwr
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move $zero, $k0
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move $zero, $k1
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move $k0, $zero
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move $k1, $zero
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eret
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zero_refill:
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mtc0 $zero, $CP_ENTRY_LO0
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mtc0 $zero, $CP0_ENTRY_LO0
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b 1b
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mtc0 $zero, $CP_ENTRY_LO1
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slow_refill:
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move $k1, $zero
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#endif
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sw $ra, -0xd88($zero)
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mtc0 $zero, $CP0_ENTRY_LO1
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#else
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// Slow refill: use C code (which calls kdebug etc)
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move $k1, $ra
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bal save_regs
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nop
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la $t9, tlb_refill
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jr $t9
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nop
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#endif
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.fill 0x100 - (. - addr_000)
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addr_100:
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// Cache error
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sw $ra, -0xd88($zero)
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move $k1, $ra
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bal save_regs
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nop
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la $t9, cache_error
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jr $t9
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nop
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.fill 0x180 - (. - addr_000)
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.fill 0x180 - (. - addr_000) - 3 * 4
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directory: // 0x174
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.word 0
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current: // 0x178
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.word idle
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// 0x17c
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.word _gp
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addr_180:
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// General exception
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sw $ra, -0xd88($zero)
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move $k1, $ra
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bal save_regs
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nop
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la $t9, exception
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jr $t9
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nop
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.fill 0x200 - (. - addr_000) - 8
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.word 0x0000001e // 1f8 EntryLo data for idle page.
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// This is annoying; it must fill it up so addr_200 is right. For some
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// reason .fill 0x200 - (. - addr_000) - 2 * 4 doesn't work here.
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.fill 0x60
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.word 0x00000012 // 1f8 EntryLo data for idle page.
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.word 0x80000000 // 1fc A pointer to the current page.
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addr_200:
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// Interrupt
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sw $ra, -0xd88($zero)
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move $k1, $ra
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bal save_regs
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nop
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la $t9, interrupt
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jr $t9
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nop
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.fill 0x280 - (. - addr_000) - 20
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directory:
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.word 0 // -d94 == directory
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// space for save_regs
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.word 0 // -d90 == k0
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.word idle // -d8c == current
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.word 0 // -d88 == ra
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.word _gp // -d84 == gp
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.fill 0x280 - (. - addr_000)
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start_idle: // 280
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// Wait for the next interrupt, then the first thread will be scheduled.
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@@ -118,111 +117,106 @@ start_idle: // 280
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// TODO: save only fragile registers now, the rest on task switch.
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kernel_exit:
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move $k0, $v0
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lui $k1, 0x8000
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sw $v0, 0x178($k1) // current
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lw $k1, SAVE_PC($k0)
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mtc0 $k1, $CP0_EPC
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lw $k1, SAVE_LO($k0)
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mtlo $k1
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lw $k1, SAVE_HI($k0)
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mthi $k1
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lw $v0, SAVE_V + 0 * 4($k0)
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lw $v1, SAVE_V + 1 * 4($k0)
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lw $a0, SAVE_A + 0 * 4($k0)
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lw $a1, SAVE_A + 1 * 4($k0)
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lw $a2, SAVE_A + 2 * 4($k0)
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lw $a3, SAVE_A + 3 * 4($k0)
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lw $t0, SAVE_T + 0 * 4($k0)
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lw $t1, SAVE_T + 1 * 4($k0)
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lw $t2, SAVE_T + 2 * 4($k0)
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lw $t3, SAVE_T + 3 * 4($k0)
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lw $t4, SAVE_T + 4 * 4($k0)
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lw $t5, SAVE_T + 5 * 4($k0)
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lw $t6, SAVE_T + 6 * 4($k0)
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lw $t7, SAVE_T + 7 * 4($k0)
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lw $t8, SAVE_T + 8 * 4($k0)
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lw $t9, SAVE_T + 9 * 4($k0)
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lw $s0, SAVE_S + 0 * 4($k0)
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lw $s1, SAVE_S + 1 * 4($k0)
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lw $s2, SAVE_S + 2 * 4($k0)
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lw $s3, SAVE_S + 3 * 4($k0)
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lw $s4, SAVE_S + 4 * 4($k0)
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lw $s5, SAVE_S + 5 * 4($k0)
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lw $s6, SAVE_S + 6 * 4($k0)
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lw $s7, SAVE_S + 7 * 4($k0)
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lw $fp, SAVE_FP($k0)
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lw $at, SAVE_AT($k0)
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lw $sp, SAVE_SP($k0)
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lw $gp, SAVE_GP($k0)
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lw $ra, SAVE_RA($k0)
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#ifndef NDEBUG
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// Exceptions were enabled in the kernel; set them to usermode setting again.
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mfc0 $k0, $CP0_STATUS
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ori $k0, $k0, 0xff13
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mtc0 $k0, $CP0_STATUS
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mfc0 $k1, $CP0_STATUS
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ori $k1, $k1, 0xff13
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mtc0 $k1, $CP0_STATUS
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#endif
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sw $v0, -0xd8c($zero)
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lw $k0, SAVE_PC($v0)
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mtc0 $k0, $CP0_EPC
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lw $k0, SAVE_LO($v0)
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lw $k1, SAVE_HI($v0)
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mtlo $k0
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mthi $k1
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lw $v1, SAVE_V + 1 * 4($v0)
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lw $a0, SAVE_A + 0 * 4($v0)
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lw $a1, SAVE_A + 1 * 4($v0)
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lw $a2, SAVE_A + 2 * 4($v0)
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lw $a3, SAVE_A + 3 * 4($v0)
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lw $t0, SAVE_T + 0 * 4($v0)
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lw $t1, SAVE_T + 1 * 4($v0)
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lw $t2, SAVE_T + 2 * 4($v0)
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lw $t3, SAVE_T + 3 * 4($v0)
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lw $t4, SAVE_T + 4 * 4($v0)
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lw $t5, SAVE_T + 5 * 4($v0)
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lw $t6, SAVE_T + 6 * 4($v0)
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lw $t7, SAVE_T + 7 * 4($v0)
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lw $t8, SAVE_T + 8 * 4($v0)
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lw $t9, SAVE_T + 9 * 4($v0)
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lw $s0, SAVE_S + 0 * 4($v0)
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lw $s1, SAVE_S + 1 * 4($v0)
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lw $s2, SAVE_S + 2 * 4($v0)
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lw $s3, SAVE_S + 3 * 4($v0)
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lw $s4, SAVE_S + 4 * 4($v0)
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lw $s5, SAVE_S + 5 * 4($v0)
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lw $s6, SAVE_S + 6 * 4($v0)
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lw $s7, SAVE_S + 7 * 4($v0)
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lw $fp, SAVE_FP($v0)
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lw $ra, SAVE_RA($v0)
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lw $at, SAVE_AT($v0)
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lw $k0, SAVE_K + 0 * 4($v0)
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lw $k1, SAVE_V + 0 * 4($v0)
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sw $k1, -0xd90($zero)
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lw $k1, SAVE_K + 1 * 4($v0)
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lw $sp, SAVE_SP($v0)
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lw $gp, SAVE_GP($v0)
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lw $v0, -0xd90($zero)
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move $k0, $zero
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move $k1, $zero
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eret
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save_regs:
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sw $k0, -0xd90($zero)
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lw $k0, -0xd8c($zero)
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lui $k0, 0x8000
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lw $k0, 0x178($k0) // current
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sw $at, SAVE_AT($k0)
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sw $k1, SAVE_RA($k0)
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sw $gp, SAVE_GP($k0)
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sw $sp, SAVE_SP($k0)
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sw $at, SAVE_AT($k0)
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sw $fp, SAVE_FP($k0)
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sw $k1, SAVE_K + 4($k0)
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lw $k1, -0xd90($zero)
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sw $k1, SAVE_K + 0($k0)
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lw $k1, -0xd88($zero)
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sw $k1, SAVE_RA($k0)
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sw $v0, SAVE_V + 0 * 4($k0)
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sw $v1, SAVE_V + 1 * 4($k0)
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sw $a0, SAVE_A + 0 * 4($k0)
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sw $a1, SAVE_A + 1 * 4($k0)
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sw $a2, SAVE_A + 2 * 4($k0)
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sw $a3, SAVE_A + 3 * 4($k0)
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sw $t0, SAVE_T + 0 * 4($k0)
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sw $t1, SAVE_T + 1 * 4($k0)
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sw $t2, SAVE_T + 2 * 4($k0)
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sw $t3, SAVE_T + 3 * 4($k0)
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sw $t4, SAVE_T + 4 * 4($k0)
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sw $t5, SAVE_T + 5 * 4($k0)
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sw $t6, SAVE_T + 6 * 4($k0)
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sw $t7, SAVE_T + 7 * 4($k0)
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sw $t8, SAVE_T + 8 * 4($k0)
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sw $t9, SAVE_T + 9 * 4($k0)
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sw $s0, SAVE_S + 0 * 4($k0)
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sw $s1, SAVE_S + 1 * 4($k0)
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sw $s2, SAVE_S + 2 * 4($k0)
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sw $s3, SAVE_S + 3 * 4($k0)
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sw $s4, SAVE_S + 4 * 4($k0)
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sw $s5, SAVE_S + 5 * 4($k0)
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sw $s6, SAVE_S + 6 * 4($k0)
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sw $s7, SAVE_S + 7 * 4($k0)
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mfhi $v0
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mflo $v1
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sw $v0, SAVE_HI($k0)
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sw $v1, SAVE_LO($k0)
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sw $s6, SAVE_S + 6 * 4($k0)
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sw $s5, SAVE_S + 5 * 4($k0)
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sw $s4, SAVE_S + 4 * 4($k0)
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sw $s3, SAVE_S + 3 * 4($k0)
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sw $s2, SAVE_S + 2 * 4($k0)
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sw $s1, SAVE_S + 1 * 4($k0)
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sw $s0, SAVE_S + 0 * 4($k0)
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sw $t9, SAVE_T + 9 * 4($k0)
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sw $t8, SAVE_T + 8 * 4($k0)
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sw $t7, SAVE_T + 7 * 4($k0)
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sw $t6, SAVE_T + 6 * 4($k0)
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sw $t5, SAVE_T + 5 * 4($k0)
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sw $t4, SAVE_T + 4 * 4($k0)
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sw $t3, SAVE_T + 3 * 4($k0)
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sw $t2, SAVE_T + 2 * 4($k0)
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sw $t1, SAVE_T + 1 * 4($k0)
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sw $t0, SAVE_T + 0 * 4($k0)
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sw $a3, SAVE_A + 3 * 4($k0)
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sw $a2, SAVE_A + 2 * 4($k0)
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sw $a1, SAVE_A + 1 * 4($k0)
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sw $a0, SAVE_A + 0 * 4($k0)
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sw $v1, SAVE_V + 1 * 4($k0)
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sw $v0, SAVE_V + 0 * 4($k0)
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mfhi $k1
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sw $k1, SAVE_HI($k0)
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mflo $k1
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sw $k1, SAVE_LO($k0)
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mfc0 $k1, $CP0_EPC
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sw $k1, SAVE_PC($k0)
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lw $gp, -0xd84($zero)
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la $sp, kernel_stack + KERNEL_STACK_SIZE
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#ifndef NDEBUG
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// Allow kernel bugs to set EPC and friends.
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mfc0 $k0, $CP0_STATUS
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li $k1, 0x10000000
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lui $k1, 0x1000
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and $k0, $k0, $k1
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mtc0 $k0, $CP0_STATUS
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#endif
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lui $k0, 0x8000
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lw $gp, 0x17c($k0)
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la $sp, kernel_stack + KERNEL_STACK_SIZE
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move $t9, $ra
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la $ra, kernel_exit
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jr $t9
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@@ -1,4 +1,5 @@
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#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/init.ccp: mips-specific boot code.
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// Copyright 2009 Bas Wijnen <wijnen@debian.org>
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@@ -73,40 +74,33 @@ static void init_cp0 ():
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// Use non-vectored interrupts.
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cp0_set0 (CP0_INT_CTL)
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// clear the tlb, hardwire page 0 to 0xffffffff
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// and soft-wire it to (0x294 << 20) + (0x290 << 10)
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// (for the idle task).
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cp0_set (CP0_WIRED, 1)
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cp0_set0 (CP0_PAGE_MASK)
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cp0_set0 (CP0_ENTRY_LO0)
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cp0_set0 (CP0_ENTRY_LO1)
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// Get number of tlb entries (is 31).
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unsigned num
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cp0_get (CP0_CONFIG1, num)
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num >>= 25
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num &= 0x3f
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// Clear the tlb.
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for unsigned i = 1; i <= num; ++i:
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cp0_set (CP0_WIRED, 0)
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cp0_set0 (CP0_PAGE_MASK)
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cp0_set0 (CP0_ENTRY_LO0)
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cp0_set0 (CP0_ENTRY_LO1)
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for unsigned i = 0; i <= num; ++i:
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// with asid 0, no page faults will be triggered, so it's safe to map memory anywhere.
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cp0_set (CP0_ENTRY_HI, 0x2000 * i)
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// And it's set to invalid anyway.
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cp0_set (CP0_ENTRY_HI, 0x2000 * (i + 1))
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cp0_set (CP0_INDEX, i)
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// write the data.
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__asm__ volatile ("tlbwi")
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// Fill the upper page in kseg3.
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cp0_set (CP0_ENTRY_HI, 0xffffe000)
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cp0_set (CP0_ENTRY_LO0, 0x1d)
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cp0_set (CP0_ENTRY_LO1, 0x1f)
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cp0_set0 (CP0_INDEX)
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__asm__ volatile ("tlbwi")
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// Fill the idle task's page in useg. Set it to non-cachable.
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||||
// its directory entry is at 1fc, so it's number 7f (0fe00000).
|
||||
// its table entry is at 1f8, so it's number 7e (0007e000).
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||||
// its address is 280 (00000280), used below for EPC.
|
||||
unsigned const idle_entry_hi = 0x0fe7e000
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||||
cp0_set (CP0_ENTRY_HI, idle_entry_hi)
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cp0_set (CP0_ENTRY_LO0, 0x16)
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||||
cp0_set (CP0_ENTRY_LO1, 0x14)
|
||||
cp0_set (CP0_ENTRY_LO0, 0x00000012)
|
||||
// The following value doesn't make much sense, but it is what is
|
||||
// filled in at run-time. So for robustness it's used here as well.
|
||||
cp0_set (CP0_ENTRY_LO1, 0x80000000)
|
||||
__asm__ volatile ("tlbwr")
|
||||
// Allow eret to be used to jump to the idle task.
|
||||
cp0_set (CP0_EPC, (idle_entry_hi & PAGE_MASK) | 0x280)
|
||||
@@ -318,5 +312,6 @@ void init (unsigned mem):
|
||||
// All interrupts enter the CPU through the interrupt controller at IP2, so enable that.
|
||||
cp0_set (CP0_STATUS, 0x1000ff13)
|
||||
|
||||
kdebug ("entering idle task\n")
|
||||
// Done; return to user space (the idle task).
|
||||
__asm__ volatile ("eret")
|
||||
|
||||
@@ -1,4 +1,5 @@
|
||||
#pypp 0
|
||||
// vim: set filetype=cpp : //
|
||||
// Iris: micro-kernel for a capability-based operating system.
|
||||
// mips/interrupts.ccp: Functions called by mips/entry.S.
|
||||
// Copyright 2009 Bas Wijnen <wijnen@debian.org>
|
||||
@@ -72,6 +73,7 @@ static kThread *handle_exit ():
|
||||
/// Otherwise, the ultra-fast code in entry.S is used.
|
||||
kThread *tlb_refill ():
|
||||
++dbg_code.h
|
||||
kdebug_num ((unsigned)directory)
|
||||
old_current = current
|
||||
if !directory:
|
||||
unsigned addr
|
||||
@@ -80,6 +82,9 @@ kThread *tlb_refill ():
|
||||
return handle_exit ()
|
||||
unsigned EntryHi
|
||||
cp0_get (CP0_ENTRY_HI, EntryHi)
|
||||
kdebug (" tlb ")
|
||||
kdebug_num (EntryHi)
|
||||
kdebug ("\n")
|
||||
Table *t = directory[EntryHi >> 21]
|
||||
if !t:
|
||||
unsigned addr
|
||||
|
||||
@@ -1,4 +1,5 @@
|
||||
#pypp 0
|
||||
// vim: set filetype=cpp ://
|
||||
// Iris: micro-kernel for a capability-based operating system.
|
||||
// mips/nanonote/board.ccp: nanonote-specific definitions.
|
||||
// Copyright 2009 Bas Wijnen <wijnen@debian.org>
|
||||
@@ -22,7 +23,7 @@
|
||||
|
||||
void board_init ():
|
||||
pll_init ()
|
||||
cpm_stop_all ()
|
||||
cpm_start_all ()
|
||||
// Timer interrupts and buzzer.
|
||||
cpm_start_tcu ()
|
||||
// sdram memory.
|
||||
@@ -38,7 +39,7 @@ void board_init ():
|
||||
// buzzer.
|
||||
gpio_as_pwm4 ()
|
||||
// Set up memory.
|
||||
//setup_sdram ()
|
||||
setup_sdram ()
|
||||
// Use some gpio pins for lcd.
|
||||
gpio_as_gpio (2, (1 << 21) | (1 << 22) | (1 << 23))
|
||||
gpio_as_output (2, (1 << 21) | (1 << 22) | (1 << 23))
|
||||
@@ -52,6 +53,7 @@ void board_init ():
|
||||
// Set up keyboard: this breaks uart receive.
|
||||
gpio_as_gpio (3, 0x05fc0000)
|
||||
// Set up timed interrupts.
|
||||
tcu_start_timer_clock (0)
|
||||
tcu_stop_counter (0)
|
||||
tcu_select_extalclk (0)
|
||||
tcu_select_clk_div4 (0)
|
||||
@@ -104,6 +106,8 @@ void arch_poweroff ():
|
||||
while !rtc_write_ready ():
|
||||
rtc_enabled ()
|
||||
while !rtc_write_ready ():
|
||||
rtc_set_hrcr_val (0x7f)
|
||||
while !rtc_write_ready ():
|
||||
kdebug ("Power down.\n")
|
||||
sync_serial ()
|
||||
rtc_power_down ()
|
||||
|
||||
@@ -16,7 +16,7 @@
|
||||
// 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 is 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
|
||||
|
||||
Reference in New Issue
Block a user