From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- hw/arm_boot.c | 251 ---------------------------------------------------------- 1 file changed, 251 deletions(-) delete mode 100644 hw/arm_boot.c (limited to 'hw/arm_boot.c') diff --git a/hw/arm_boot.c b/hw/arm_boot.c deleted file mode 100644 index 5990961..0000000 --- a/hw/arm_boot.c +++ /dev/null @@ -1,251 +0,0 @@ -/* - * ARM kernel loader. - * - * Copyright (c) 2006-2007 CodeSourcery. - * Written by Paul Brook - * - * This code is licenced under the GPL. - */ - -#include "hw.h" -#include "arm-misc.h" -#include "sysemu.h" - -#define KERNEL_ARGS_ADDR 0x100 -#define KERNEL_LOAD_ADDR 0x00010000 -#define INITRD_LOAD_ADDR 0x00800000 - -/* The worlds second smallest bootloader. Set r0-r2, then jump to kernel. */ -static uint32_t bootloader[] = { - 0xe3a00000, /* mov r0, #0 */ - 0xe3a01000, /* mov r1, #0x?? */ - 0xe3811c00, /* orr r1, r1, #0x??00 */ - 0xe59f2000, /* ldr r2, [pc, #0] */ - 0xe59ff000, /* ldr pc, [pc, #0] */ - 0, /* Address of kernel args. Set by integratorcp_init. */ - 0 /* Kernel entry point. Set by integratorcp_init. */ -}; - -/* Entry point for secondary CPUs. Enable interrupt controller and - Issue WFI until start address is written to system controller. */ -static uint32_t smpboot[] = { - 0xe3a00201, /* mov r0, #0x10000000 */ - 0xe3800601, /* orr r0, r0, #0x001000000 */ - 0xe3a01001, /* mov r1, #1 */ - 0xe5801100, /* str r1, [r0, #0x100] */ - 0xe3a00201, /* mov r0, #0x10000000 */ - 0xe3800030, /* orr r0, #0x30 */ - 0xe320f003, /* wfi */ - 0xe5901000, /* ldr r1, [r0] */ - 0xe3110003, /* tst r1, #3 */ - 0x1afffffb, /* bne */ - 0xe12fff11 /* bx r1 */ -}; - -static void main_cpu_reset(void *opaque) -{ - CPUState *env = opaque; - - cpu_reset(env); - if (env->boot_info) - arm_load_kernel(env, env->boot_info); - - /* TODO: Reset secondary CPUs. */ -} - -static void set_kernel_args(struct arm_boot_info *info, - int initrd_size, void *base) -{ - uint32_t *p; - - p = (uint32_t *)(base + KERNEL_ARGS_ADDR); - /* ATAG_CORE */ - stl_raw(p++, 5); - stl_raw(p++, 0x54410001); - stl_raw(p++, 1); - stl_raw(p++, 0x1000); - stl_raw(p++, 0); - /* ATAG_MEM */ - /* TODO: handle multiple chips on one ATAG list */ - stl_raw(p++, 4); - stl_raw(p++, 0x54410002); - stl_raw(p++, info->ram_size); - stl_raw(p++, info->loader_start); - if (initrd_size) { - /* ATAG_INITRD2 */ - stl_raw(p++, 4); - stl_raw(p++, 0x54420005); - stl_raw(p++, info->loader_start + INITRD_LOAD_ADDR); - stl_raw(p++, initrd_size); - } - if (info->kernel_cmdline && *info->kernel_cmdline) { - /* ATAG_CMDLINE */ - int cmdline_size; - - cmdline_size = strlen(info->kernel_cmdline); - memcpy(p + 2, info->kernel_cmdline, cmdline_size + 1); - cmdline_size = (cmdline_size >> 2) + 1; - stl_raw(p++, cmdline_size + 2); - stl_raw(p++, 0x54410009); - p += cmdline_size; - } - if (info->atag_board) { - /* ATAG_BOARD */ - int atag_board_len; - - atag_board_len = (info->atag_board(info, p + 2) + 3) >> 2; - stl_raw(p++, 2 + atag_board_len); - stl_raw(p++, 0x414f4d50); - p += atag_board_len; - } - /* ATAG_END */ - stl_raw(p++, 0); - stl_raw(p++, 0); -} - -static void set_kernel_args_old(struct arm_boot_info *info, - int initrd_size, void *base) -{ - uint32_t *p; - unsigned char *s; - - /* see linux/include/asm-arm/setup.h */ - p = (uint32_t *)(base + KERNEL_ARGS_ADDR); - /* page_size */ - stl_raw(p++, 4096); - /* nr_pages */ - stl_raw(p++, info->ram_size / 4096); - /* ramdisk_size */ - stl_raw(p++, 0); -#define FLAG_READONLY 1 -#define FLAG_RDLOAD 4 -#define FLAG_RDPROMPT 8 - /* flags */ - stl_raw(p++, FLAG_READONLY | FLAG_RDLOAD | FLAG_RDPROMPT); - /* rootdev */ - stl_raw(p++, (31 << 8) | 0); /* /dev/mtdblock0 */ - /* video_num_cols */ - stl_raw(p++, 0); - /* video_num_rows */ - stl_raw(p++, 0); - /* video_x */ - stl_raw(p++, 0); - /* video_y */ - stl_raw(p++, 0); - /* memc_control_reg */ - stl_raw(p++, 0); - /* unsigned char sounddefault */ - /* unsigned char adfsdrives */ - /* unsigned char bytes_per_char_h */ - /* unsigned char bytes_per_char_v */ - stl_raw(p++, 0); - /* pages_in_bank[4] */ - stl_raw(p++, 0); - stl_raw(p++, 0); - stl_raw(p++, 0); - stl_raw(p++, 0); - /* pages_in_vram */ - stl_raw(p++, 0); - /* initrd_start */ - if (initrd_size) - stl_raw(p++, info->loader_start + INITRD_LOAD_ADDR); - else - stl_raw(p++, 0); - /* initrd_size */ - stl_raw(p++, initrd_size); - /* rd_start */ - stl_raw(p++, 0); - /* system_rev */ - stl_raw(p++, 0); - /* system_serial_low */ - stl_raw(p++, 0); - /* system_serial_high */ - stl_raw(p++, 0); - /* mem_fclk_21285 */ - stl_raw(p++, 0); - /* zero unused fields */ - memset(p, 0, 256 + 1024 - - (p - ((uint32_t *)(base + KERNEL_ARGS_ADDR)))); - s = base + KERNEL_ARGS_ADDR + 256 + 1024; - if (info->kernel_cmdline) - strcpy (s, info->kernel_cmdline); - else - stb_raw(s, 0); -} - -void arm_load_kernel(CPUState *env, struct arm_boot_info *info) -{ - int kernel_size; - int initrd_size; - int n; - int is_linux = 0; - uint64_t elf_entry; - target_ulong entry; - uint32_t pd; - void *loader_phys; - - /* Load the kernel. */ - if (!info->kernel_filename) { - fprintf(stderr, "Kernel image must be specified\n"); - exit(1); - } - - if (!env->boot_info) { - if (info->nb_cpus == 0) - info->nb_cpus = 1; - env->boot_info = info; - qemu_register_reset(main_cpu_reset, env); - } - - pd = cpu_get_physical_page_desc(info->loader_start); - loader_phys = phys_ram_base + (pd & TARGET_PAGE_MASK) + - (info->loader_start & ~TARGET_PAGE_MASK); - - /* Assume that raw images are linux kernels, and ELF images are not. */ - kernel_size = load_elf(info->kernel_filename, 0, &elf_entry, NULL, NULL); - entry = elf_entry; - if (kernel_size < 0) { - kernel_size = load_uboot(info->kernel_filename, &entry, &is_linux); - } - if (kernel_size < 0) { - kernel_size = load_image(info->kernel_filename, - loader_phys + KERNEL_LOAD_ADDR); - entry = info->loader_start + KERNEL_LOAD_ADDR; - is_linux = 1; - } - if (kernel_size < 0) { - fprintf(stderr, "qemu: could not load kernel '%s'\n", - info->kernel_filename); - exit(1); - } - if (!is_linux) { - /* Jump to the entry point. */ - env->regs[15] = entry & 0xfffffffe; - env->thumb = entry & 1; - } else { - if (info->initrd_filename) { - initrd_size = load_image(info->initrd_filename, - loader_phys + INITRD_LOAD_ADDR); - if (initrd_size < 0) { - fprintf(stderr, "qemu: could not load initrd '%s'\n", - info->initrd_filename); - exit(1); - } - } else { - initrd_size = 0; - } - bootloader[1] |= info->board_id & 0xff; - bootloader[2] |= (info->board_id >> 8) & 0xff; - bootloader[5] = info->loader_start + KERNEL_ARGS_ADDR; - bootloader[6] = entry; - for (n = 0; n < sizeof(bootloader) / 4; n++) - stl_raw(loader_phys + (n * 4), bootloader[n]); - if (info->nb_cpus > 1) - for (n = 0; n < sizeof(smpboot) / 4; n++) - stl_raw(loader_phys + info->ram_size + (n * 4), smpboot[n]); - if (old_param) - set_kernel_args_old(info, initrd_size, loader_phys); - else - set_kernel_args(info, initrd_size, loader_phys); - } -} -- cgit v1.1