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authorAurelien Jarno <aurelien@aurel32.net>2010-04-11 19:20:32 +0200
committerAurelien Jarno <aurelien@aurel32.net>2010-04-11 19:20:32 +0200
commit73f190352dcef63f6e20e4b0f9efe29e6ec57b43 (patch)
treeb97928135d2d41a6406b4d02aab5cbb941360fe3 /hw/r2d.c
parent56839a19e875e5e7b1851840c93422bafb414ef0 (diff)
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hw/r2d: add initrd support
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'hw/r2d.c')
-rw-r--r--hw/r2d.c80
1 files changed, 59 insertions, 21 deletions
diff --git a/hw/r2d.c b/hw/r2d.c
index 961991b..f3594df 100644
--- a/hw/r2d.c
+++ b/hw/r2d.c
@@ -45,8 +45,10 @@
#define SM501_VRAM_SIZE 0x800000
+#define BOOT_PARAMS_OFFSET 0x0010000
/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
-#define LINUX_LOAD_OFFSET 0x800000
+#define LINUX_LOAD_OFFSET 0x0800000
+#define INITRD_LOAD_OFFSET 0x1800000
#define PA_IRLMSK 0x00
#define PA_POWOFF 0x30
@@ -204,6 +206,20 @@ static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
return intx[d->devfn >> 3];
}
+static struct __attribute__((__packed__))
+{
+ int mount_root_rdonly;
+ int ramdisk_flags;
+ int orig_root_dev;
+ int loader_type;
+ int initrd_start;
+ int initrd_size;
+
+ char pad[232];
+
+ char kernel_cmdline[256];
+} boot_params;
+
static void r2d_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
@@ -258,28 +274,50 @@ static void r2d_init(ram_addr_t ram_size,
usbdevice_create("keyboard");
/* Todo: register on board registers */
+ memset(&boot_params, 0, sizeof(boot_params));
+
if (kernel_filename) {
- int kernel_size;
- /* initialization which should be done by firmware */
- stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
- stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
-
- if (kernel_cmdline) {
- kernel_size = load_image_targphys(kernel_filename,
- SDRAM_BASE + LINUX_LOAD_OFFSET,
- SDRAM_SIZE - LINUX_LOAD_OFFSET);
- env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
- pstrcpy_targphys("cmdline", SDRAM_BASE + 0x10100, 256, kernel_cmdline);
- } else {
- kernel_size = load_image_targphys(kernel_filename, SDRAM_BASE, SDRAM_SIZE);
- env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
- }
-
- if (kernel_size < 0) {
- fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
- exit(1);
- }
+ int kernel_size;
+
+ kernel_size = load_image_targphys(kernel_filename,
+ SDRAM_BASE + LINUX_LOAD_OFFSET,
+ INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET);
+ if (kernel_size < 0) {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
+ exit(1);
+ }
+
+ /* initialization which should be done by firmware */
+ stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
+ stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
+ env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */
}
+
+ if (initrd_filename) {
+ int initrd_size;
+
+ initrd_size = load_image_targphys(initrd_filename,
+ SDRAM_BASE + INITRD_LOAD_OFFSET,
+ SDRAM_SIZE - INITRD_LOAD_OFFSET);
+
+ if (initrd_size < 0) {
+ fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename);
+ exit(1);
+ }
+
+ /* initialization which should be done by firmware */
+ boot_params.loader_type = 1;
+ boot_params.initrd_start = INITRD_LOAD_OFFSET;
+ boot_params.initrd_size = initrd_size;
+ }
+
+ if (kernel_cmdline) {
+ strncpy(boot_params.kernel_cmdline, kernel_cmdline,
+ sizeof(boot_params.kernel_cmdline));
+ }
+
+ rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params),
+ SDRAM_BASE + BOOT_PARAMS_OFFSET);
}
static QEMUMachine r2d_machine = {