-/*
+/*
* ARM kernel loader.
*
- * Copyright (c) 2006 CodeSourcery.
+ * Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GPL.
*/
-#include "vl.h"
+#include "hw.h"
+#include "arm-misc.h"
+#include "sysemu.h"
#define KERNEL_ARGS_ADDR 0x100
#define KERNEL_LOAD_ADDR 0x00010000
0 /* Kernel entry point. Set by integratorcp_init. */
};
-static void set_kernel_args(uint32_t ram_size, int initrd_size,
- const char *kernel_cmdline)
+/* 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. */
+}
+
+#define WRITE_WORD(p, value) do { \
+ stl_phys_notdirty(p, value); \
+ p += 4; \
+} while (0)
+
+static void set_kernel_args(struct arm_boot_info *info,
+ int initrd_size, target_phys_addr_t base)
{
- uint32_t *p;
+ target_phys_addr_t p;
- p = (uint32_t *)(phys_ram_base + KERNEL_ARGS_ADDR);
+ p = 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);
+ WRITE_WORD(p, 5);
+ WRITE_WORD(p, 0x54410001);
+ WRITE_WORD(p, 1);
+ WRITE_WORD(p, 0x1000);
+ WRITE_WORD(p, 0);
/* ATAG_MEM */
- stl_raw(p++, 4);
- stl_raw(p++, 0x54410002);
- stl_raw(p++, ram_size);
- stl_raw(p++, 0);
+ /* TODO: handle multiple chips on one ATAG list */
+ WRITE_WORD(p, 4);
+ WRITE_WORD(p, 0x54410002);
+ WRITE_WORD(p, info->ram_size);
+ WRITE_WORD(p, info->loader_start);
if (initrd_size) {
/* ATAG_INITRD2 */
- stl_raw(p++, 4);
- stl_raw(p++, 0x54420005);
- stl_raw(p++, INITRD_LOAD_ADDR);
- stl_raw(p++, initrd_size);
+ WRITE_WORD(p, 4);
+ WRITE_WORD(p, 0x54420005);
+ WRITE_WORD(p, info->loader_start + INITRD_LOAD_ADDR);
+ WRITE_WORD(p, initrd_size);
}
- if (kernel_cmdline && *kernel_cmdline) {
+ if (info->kernel_cmdline && *info->kernel_cmdline) {
/* ATAG_CMDLINE */
int cmdline_size;
- cmdline_size = strlen(kernel_cmdline);
- memcpy (p + 2, kernel_cmdline, cmdline_size + 1);
+ cmdline_size = strlen(info->kernel_cmdline);
+ cpu_physical_memory_write(p + 8, (void *)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;
+ WRITE_WORD(p, cmdline_size + 2);
+ WRITE_WORD(p, 0x54410009);
+ p += cmdline_size * 4;
+ }
+ if (info->atag_board) {
+ /* ATAG_BOARD */
+ int atag_board_len;
+ uint8_t atag_board_buf[0x1000];
+
+ atag_board_len = (info->atag_board(info, atag_board_buf) + 3) & ~3;
+ WRITE_WORD(p, (atag_board_len + 8) >> 2);
+ WRITE_WORD(p, 0x414f4d50);
+ cpu_physical_memory_write(p, atag_board_buf, atag_board_len);
+ p += atag_board_len;
}
/* ATAG_END */
- stl_raw(p++, 0);
- stl_raw(p++, 0);
+ WRITE_WORD(p, 0);
+ WRITE_WORD(p, 0);
+}
+
+static void set_kernel_args_old(struct arm_boot_info *info,
+ int initrd_size, target_phys_addr_t base)
+{
+ target_phys_addr_t p;
+ const char *s;
+
+
+ /* see linux/include/asm-arm/setup.h */
+ p = base + KERNEL_ARGS_ADDR;
+ /* page_size */
+ WRITE_WORD(p, 4096);
+ /* nr_pages */
+ WRITE_WORD(p, info->ram_size / 4096);
+ /* ramdisk_size */
+ WRITE_WORD(p, 0);
+#define FLAG_READONLY 1
+#define FLAG_RDLOAD 4
+#define FLAG_RDPROMPT 8
+ /* flags */
+ WRITE_WORD(p, FLAG_READONLY | FLAG_RDLOAD | FLAG_RDPROMPT);
+ /* rootdev */
+ WRITE_WORD(p, (31 << 8) | 0); /* /dev/mtdblock0 */
+ /* video_num_cols */
+ WRITE_WORD(p, 0);
+ /* video_num_rows */
+ WRITE_WORD(p, 0);
+ /* video_x */
+ WRITE_WORD(p, 0);
+ /* video_y */
+ WRITE_WORD(p, 0);
+ /* memc_control_reg */
+ WRITE_WORD(p, 0);
+ /* unsigned char sounddefault */
+ /* unsigned char adfsdrives */
+ /* unsigned char bytes_per_char_h */
+ /* unsigned char bytes_per_char_v */
+ WRITE_WORD(p, 0);
+ /* pages_in_bank[4] */
+ WRITE_WORD(p, 0);
+ WRITE_WORD(p, 0);
+ WRITE_WORD(p, 0);
+ WRITE_WORD(p, 0);
+ /* pages_in_vram */
+ WRITE_WORD(p, 0);
+ /* initrd_start */
+ if (initrd_size)
+ WRITE_WORD(p, info->loader_start + INITRD_LOAD_ADDR);
+ else
+ WRITE_WORD(p, 0);
+ /* initrd_size */
+ WRITE_WORD(p, initrd_size);
+ /* rd_start */
+ WRITE_WORD(p, 0);
+ /* system_rev */
+ WRITE_WORD(p, 0);
+ /* system_serial_low */
+ WRITE_WORD(p, 0);
+ /* system_serial_high */
+ WRITE_WORD(p, 0);
+ /* mem_fclk_21285 */
+ WRITE_WORD(p, 0);
+ /* zero unused fields */
+ while (p < base + KERNEL_ARGS_ADDR + 256 + 1024) {
+ WRITE_WORD(p, 0);
+ }
+ s = info->kernel_cmdline;
+ if (s) {
+ cpu_physical_memory_write(p, (void *)s, strlen(s) + 1);
+ } else {
+ WRITE_WORD(p, 0);
+ }
}
-void arm_load_kernel(CPUState *env, int ram_size, const char *kernel_filename,
- const char *kernel_cmdline, const char *initrd_filename,
- int board_id)
+void arm_load_kernel(CPUState *env, struct arm_boot_info *info)
{
int kernel_size;
int initrd_size;
target_ulong entry;
/* Load the kernel. */
- if (!kernel_filename) {
+ 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, 0, env);
+ }
+
/* Assume that raw images are linux kernels, and ELF images are not. */
- kernel_size = load_elf(kernel_filename, 0, &elf_entry);
+ kernel_size = load_elf(info->kernel_filename, 0, &elf_entry, NULL, NULL);
entry = elf_entry;
if (kernel_size < 0) {
- kernel_size = load_uboot(kernel_filename, &entry, &is_linux);
+ kernel_size = load_uimage(info->kernel_filename, &entry, NULL,
+ &is_linux);
}
if (kernel_size < 0) {
- kernel_size = load_image(kernel_filename,
- phys_ram_base + KERNEL_LOAD_ADDR);
- entry = KERNEL_LOAD_ADDR;
+ entry = info->loader_start + KERNEL_LOAD_ADDR;
+ kernel_size = load_image_targphys(info->kernel_filename, entry,
+ ram_size - KERNEL_LOAD_ADDR);
is_linux = 1;
}
if (kernel_size < 0) {
- fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
+ fprintf(stderr, "qemu: could not load kernel '%s'\n",
+ info->kernel_filename);
exit(1);
}
if (!is_linux) {
env->regs[15] = entry & 0xfffffffe;
env->thumb = entry & 1;
} else {
- if (initrd_filename) {
- initrd_size = load_image(initrd_filename,
- phys_ram_base + INITRD_LOAD_ADDR);
+ if (info->initrd_filename) {
+ initrd_size = load_image_targphys(info->initrd_filename,
+ info->loader_start
+ + INITRD_LOAD_ADDR,
+ ram_size - INITRD_LOAD_ADDR);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initrd '%s'\n",
- initrd_filename);
+ info->initrd_filename);
exit(1);
}
} else {
initrd_size = 0;
}
- bootloader[1] |= board_id & 0xff;
- bootloader[2] |= (board_id >> 8) & 0xff;
- bootloader[5] = KERNEL_ARGS_ADDR;
+ 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(phys_ram_base + (n * 4), bootloader[n]);
- set_kernel_args(ram_size, initrd_size, kernel_cmdline);
+ for (n = 0; n < sizeof(bootloader) / 4; n++) {
+ stl_phys_notdirty(info->loader_start + (n * 4), bootloader[n]);
+ }
+ if (info->nb_cpus > 1) {
+ for (n = 0; n < sizeof(smpboot) / 4; n++) {
+ stl_phys_notdirty(info->smp_loader_start + (n * 4), smpboot[n]);
+ }
+ }
+ if (old_param)
+ set_kernel_args_old(info, initrd_size, info->loader_start);
+ else
+ set_kernel_args(info, initrd_size, info->loader_start);
}
}
-
projects / qemu / blobdiff