hw/r2d: add initrd support
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
parent
56839a19e8
commit
73f190352d
64
hw/r2d.c
64
hw/r2d.c
@ -45,8 +45,10 @@
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#define SM501_VRAM_SIZE 0x800000
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#define SM501_VRAM_SIZE 0x800000
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#define BOOT_PARAMS_OFFSET 0x0010000
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/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
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/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
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#define LINUX_LOAD_OFFSET 0x800000
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#define LINUX_LOAD_OFFSET 0x0800000
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#define INITRD_LOAD_OFFSET 0x1800000
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#define PA_IRLMSK 0x00
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#define PA_IRLMSK 0x00
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#define PA_POWOFF 0x30
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#define PA_POWOFF 0x30
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@ -204,6 +206,20 @@ static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
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return intx[d->devfn >> 3];
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return intx[d->devfn >> 3];
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}
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}
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static struct __attribute__((__packed__))
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{
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int mount_root_rdonly;
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int ramdisk_flags;
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int orig_root_dev;
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int loader_type;
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int initrd_start;
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int initrd_size;
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char pad[232];
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char kernel_cmdline[256];
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} boot_params;
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static void r2d_init(ram_addr_t ram_size,
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static void r2d_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *boot_device,
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const char *kernel_filename, const char *kernel_cmdline,
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const char *kernel_filename, const char *kernel_cmdline,
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@ -258,28 +274,50 @@ static void r2d_init(ram_addr_t ram_size,
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usbdevice_create("keyboard");
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usbdevice_create("keyboard");
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/* Todo: register on board registers */
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/* Todo: register on board registers */
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memset(&boot_params, 0, sizeof(boot_params));
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if (kernel_filename) {
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if (kernel_filename) {
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int kernel_size;
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int kernel_size;
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/* initialization which should be done by firmware */
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stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
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stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
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if (kernel_cmdline) {
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kernel_size = load_image_targphys(kernel_filename,
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kernel_size = load_image_targphys(kernel_filename,
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SDRAM_BASE + LINUX_LOAD_OFFSET,
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SDRAM_BASE + LINUX_LOAD_OFFSET,
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SDRAM_SIZE - LINUX_LOAD_OFFSET);
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INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET);
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env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
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pstrcpy_targphys("cmdline", SDRAM_BASE + 0x10100, 256, kernel_cmdline);
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} else {
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kernel_size = load_image_targphys(kernel_filename, SDRAM_BASE, SDRAM_SIZE);
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env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
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}
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if (kernel_size < 0) {
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
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fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
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exit(1);
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exit(1);
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}
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}
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/* initialization which should be done by firmware */
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stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
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stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
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env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */
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}
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}
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if (initrd_filename) {
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int initrd_size;
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initrd_size = load_image_targphys(initrd_filename,
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SDRAM_BASE + INITRD_LOAD_OFFSET,
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SDRAM_SIZE - INITRD_LOAD_OFFSET);
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if (initrd_size < 0) {
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fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename);
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exit(1);
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}
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/* initialization which should be done by firmware */
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boot_params.loader_type = 1;
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boot_params.initrd_start = INITRD_LOAD_OFFSET;
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boot_params.initrd_size = initrd_size;
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}
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if (kernel_cmdline) {
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strncpy(boot_params.kernel_cmdline, kernel_cmdline,
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sizeof(boot_params.kernel_cmdline));
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}
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rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params),
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SDRAM_BASE + BOOT_PARAMS_OFFSET);
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}
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}
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static QEMUMachine r2d_machine = {
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static QEMUMachine r2d_machine = {
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