diff options
| -rw-r--r-- | hw/r2d.c | 80 |
1 files changed, 59 insertions, 21 deletions
@@ -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 = { |