diff options
| author | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-05-04 14:34:34 +0000 |
|---|---|---|
| committer | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2007-05-04 14:34:34 +0000 |
| commit | 26ea091859c76d5e1b8a95148aa60b59dc8ee196 (patch) | |
| tree | bfb095f8f2eb74b096a0749114d14daa641be9d7 /hw/mips_malta.c | |
| parent | f7cf7945ab309508bbf4dfbcf5e47edc7212f928 (diff) | |
Support for simple YAMON output, by Alec Voropay.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2770 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/mips_malta.c')
| -rw-r--r-- | hw/mips_malta.c | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/hw/mips_malta.c b/hw/mips_malta.c index 42627e82a5..82ba809522 100644 --- a/hw/mips_malta.c +++ b/hw/mips_malta.c @@ -535,11 +535,27 @@ static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t /* Small bootloader */ p = (uint32_t *) (phys_ram_base + bios_offset); - stl_raw(p++, 0x0bf00006); /* j 0x1fc00018 */ + stl_raw(p++, 0x0bf00160); /* j 0x1fc00580 */ stl_raw(p++, 0x00000000); /* nop */ + /* YAMON service vector */ + stl_raw(phys_ram_base + bios_offset + 0x500, 0xbfc00580); /* start: */ + stl_raw(phys_ram_base + bios_offset + 0x504, 0xbfc0083c); /* print_count: */ + stl_raw(phys_ram_base + bios_offset + 0x520, 0xbfc00580); /* start: */ + stl_raw(phys_ram_base + bios_offset + 0x52c, 0xbfc00800); /* flush_cache: */ + stl_raw(phys_ram_base + bios_offset + 0x534, 0xbfc00808); /* print: */ + stl_raw(phys_ram_base + bios_offset + 0x538, 0xbfc00800); /* reg_cpu_isr: */ + stl_raw(phys_ram_base + bios_offset + 0x53c, 0xbfc00800); /* unred_cpu_isr: */ + stl_raw(phys_ram_base + bios_offset + 0x540, 0xbfc00800); /* reg_ic_isr: */ + stl_raw(phys_ram_base + bios_offset + 0x544, 0xbfc00800); /* unred_ic_isr: */ + stl_raw(phys_ram_base + bios_offset + 0x548, 0xbfc00800); /* reg_esr: */ + stl_raw(phys_ram_base + bios_offset + 0x54c, 0xbfc00800); /* unreg_esr: */ + stl_raw(phys_ram_base + bios_offset + 0x550, 0xbfc00800); /* getchar: */ + stl_raw(phys_ram_base + bios_offset + 0x554, 0xbfc00800); /* syscon_read: */ + + /* Second part of the bootloader */ - p = (uint32_t *) (phys_ram_base + bios_offset + 0x018); + p = (uint32_t *) (phys_ram_base + bios_offset + 0x580); stl_raw(p++, 0x24040002); /* addiu a0, zero, 2 */ stl_raw(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); /* lui sp, high(ENVP_ADDR) */ stl_raw(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); /* ori sp, a0, low(ENVP_ADDR) */ @@ -597,6 +613,50 @@ static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t stl_raw(p++, 0x37ff0000 | (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */ stl_raw(p++, 0x03e00008); /* jr ra */ stl_raw(p++, 0x00000000); /* nop */ + + /* YAMON subroutines */ + p = (uint32_t *) (phys_ram_base + bios_offset + 0x800); + stl_raw(p++, 0x03e00008); /* jr ra */ + stl_raw(p++, 0x24020000); /* li v0,0 */ + /* 808 YAMON print */ + stl_raw(p++, 0x03e06821); /* move t5,ra */ + stl_raw(p++, 0x00805821); /* move t3,a0 */ + stl_raw(p++, 0x00a05021); /* move t2,a1 */ + stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ + stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ + stl_raw(p++, 0x10800005); /* beqz a0,834 */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x0ff0021c); /* jal 870 */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x08000205); /* j 814 */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x01a00008); /* jr t5 */ + stl_raw(p++, 0x01602021); /* move a0,t3 */ + /* 0x83c YAMON print_count */ + stl_raw(p++, 0x03e06821); /* move t5,ra */ + stl_raw(p++, 0x00805821); /* move t3,a0 */ + stl_raw(p++, 0x00a05021); /* move t2,a1 */ + stl_raw(p++, 0x00c06021); /* move t4,a2 */ + stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ + stl_raw(p++, 0x0ff0021c); /* jal 870 */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ + stl_raw(p++, 0x258cffff); /* addiu t4,t4,-1 */ + stl_raw(p++, 0x1580fffa); /* bnez t4,84c */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x01a00008); /* jr t5 */ + stl_raw(p++, 0x01602021); /* move a0,t3 */ + /* 0x870 */ + stl_raw(p++, 0x3c08b800); /* lui t0,0xb400 */ + stl_raw(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ + stl_raw(p++, 0x91090005); /* lbu t1,5(t0) */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x31290040); /* andi t1,t1,0x40 */ + stl_raw(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ + stl_raw(p++, 0x00000000); /* nop */ + stl_raw(p++, 0x03e00008); /* jr ra */ + stl_raw(p++, 0xa1040000); /* sb a0,0(t0) */ + } static void prom_set(int index, const char *string, ...) |