--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/arm_boot.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,269 @@
+/*
+ * 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"
+#include "devtree.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 <wfi> */
+ 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);
+ /* FIXME: This is broken if it overlaps multiple regions. */
+ loader_phys = host_ram_addr((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_uimage(info->kernel_filename, &entry, NULL,
+ &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);
+ }
+}
+
+void cpu_bootstrap(const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename)
+{
+ static struct arm_boot_info binfo;
+ memset(&binfo, 0, sizeof(binfo));
+ /* FIXME: Handle multiple ram regions. */
+ binfo.loader_start = devtree_ram_map[0].base;
+ binfo.ram_size = devtree_ram_map[0].size;
+ binfo.board_id = devtree_get_config_int("board-id", 0);
+ binfo.kernel_filename = kernel_filename;
+ binfo.kernel_cmdline = kernel_cmdline;
+ binfo.initrd_filename = initrd_filename;
+ arm_load_kernel(first_cpu, &binfo);
+}