Commit d52fff71 authored by ths's avatar ths

Improved mini-bootloader, based on a patch by Alec Voropay.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2725 c046a42c-6fe2-441c-8c8c-71466251a162
parent 74563c16
......@@ -535,13 +535,14 @@ 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++, 0x0bf00010); /* j 0x1fc00040 */
stl_raw(p++, 0x0bf00006); /* j 0x1fc00018 */
stl_raw(p++, 0x00000000); /* nop */
/* Second part of the bootloader */
p = (uint32_t *) (phys_ram_base + bios_offset + 0x040);
stl_raw(p++, 0x3c040000); /* lui a0, 0 */
stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */
p = (uint32_t *) (phys_ram_base + bios_offset + 0x018);
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) */
stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */
stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */
stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */
......
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