#ifndef FIRMWARE_ABI_H
#define FIRMWARE_ABI_H
-#ifndef __ASSEMBLY__
-/* Open Hack'Ware NVRAM configuration structure */
-
-/* Version 3 */
-typedef struct ohwcfg_v3_t ohwcfg_v3_t;
-struct ohwcfg_v3_t {
- /* 0x00: structure identifier */
- uint8_t struct_ident[0x10];
- /* 0x10: structure version and NVRAM description */
- uint32_t struct_version;
- uint16_t nvram_size;
- uint16_t pad0;
- uint16_t nvram_arch_ptr;
- uint16_t nvram_arch_size;
- uint16_t nvram_arch_crc;
- uint8_t pad1[0x02];
- /* 0x20: host architecture */
- uint8_t arch[0x10];
- /* 0x30: RAM/ROM description */
- uint64_t RAM0_base;
- uint64_t RAM0_size;
- uint64_t RAM1_base;
- uint64_t RAM1_size;
- uint64_t RAM2_base;
- uint64_t RAM2_size;
- uint64_t RAM3_base;
- uint64_t RAM3_size;
- uint64_t ROM_base;
- uint64_t ROM_size;
- /* 0x80: Kernel description */
- uint64_t kernel_image;
- uint64_t kernel_size;
- /* 0x90: Kernel command line */
- uint64_t cmdline;
- uint64_t cmdline_size;
- /* 0xA0: Kernel boot image */
- uint64_t initrd_image;
- uint64_t initrd_size;
- /* 0xB0: NVRAM image */
- uint64_t NVRAM_image;
- uint8_t pad2[8];
- /* 0xC0: graphic configuration */
- uint16_t width;
- uint16_t height;
- uint16_t depth;
- uint16_t graphic_flags;
- /* 0xC8: CPUs description */
- uint8_t nb_cpus;
- uint8_t boot_cpu;
- uint8_t nboot_devices;
- uint8_t pad3[5];
- /* 0xD0: boot devices */
- uint8_t boot_devices[0x10];
- /* 0xE0 */
- uint8_t pad4[0x1C]; /* 28 */
- /* 0xFC: checksum */
- uint16_t crc;
- uint8_t pad5[0x02];
-} __attribute__ (( packed ));
-
-#define OHW_GF_NOGRAPHICS 0x0001
-
-static inline uint16_t
-OHW_crc_update (uint16_t prev, uint16_t value)
-{
- uint16_t tmp;
- uint16_t pd, pd1, pd2;
-
- tmp = prev >> 8;
- pd = prev ^ value;
- pd1 = pd & 0x000F;
- pd2 = ((pd >> 4) & 0x000F) ^ pd1;
- tmp ^= (pd1 << 3) | (pd1 << 8);
- tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
-
- return tmp;
-}
-
-static inline uint16_t
-OHW_compute_crc (ohwcfg_v3_t *header, uint32_t start, uint32_t count)
-{
- uint32_t i;
- uint16_t crc = 0xFFFF;
- uint8_t *ptr = (uint8_t *)header;
- int odd;
-
- odd = count & 1;
- count &= ~1;
- for (i = 0; i != count; i++) {
- crc = OHW_crc_update(crc, (ptr[start + i] << 8) | ptr[start + i + 1]);
- }
- if (odd) {
- crc = OHW_crc_update(crc, ptr[start + i] << 8);
- }
-
- return crc;
-}
-
-/* Sparc32 runtime NVRAM structure for SMP CPU boot */
-struct sparc_arch_cfg {
- uint32_t smp_ctx;
- uint32_t smp_ctxtbl;
- uint32_t smp_entry;
- uint8_t valid;
- uint8_t unused[51];
-};
-
/* OpenBIOS NVRAM partition */
struct OpenBIOS_nvpart_v1 {
uint8_t signature;
header->checksum = tmp;
}
-
-#else /* __ASSEMBLY__ */
-
-/* Structure offsets for asm use */
-
-/* Open Hack'Ware NVRAM configuration structure */
-#define OHW_ARCH_PTR 0x18
-#define OHW_RAM_SIZE 0x38
-#define OHW_BOOT_CPU 0xC9
-
-/* Sparc32 runtime NVRAM structure for SMP CPU boot */
-#define SPARC_SMP_CTX 0x0
-#define SPARC_SMP_CTXTBL 0x4
-#define SPARC_SMP_ENTRY 0x8
-#define SPARC_SMP_VALID 0xc
-
-/* Sun IDPROM structure at the end of NVRAM */
-#define SPARC_MACHINE_ID 0x1fd9
-
-#endif /* __ASSEMBLY__ */
#endif /* FIRMWARE_ABI_H */
#define PROM_ADDR 0xfff00000
#define KERNEL_LOAD_ADDR 0x01000000
+#define CMDLINE_ADDR 0x017ff000
#define INITRD_LOAD_ADDR 0x01800000
#define ESCC_CLOCK 3686400
&unin_readl,
};
+static int fw_cfg_boot_set(void *opaque, const char *boot_device)
+{
+ fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
+ return 0;
+}
+
/* PowerPC Mac99 hardware initialisation */
static void ppc_core99_init (ram_addr_t ram_size, int vga_ram_size,
const char *boot_device,
}
if (linux_boot) {
+ uint64_t lowaddr = 0;
kernel_base = KERNEL_LOAD_ADDR;
- /* now we can load the kernel */
- kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
+
+ /* Now we can load the kernel. The first step tries to load the kernel
+ supposing PhysAddr = 0x00000000. If that was wrong the kernel is
+ loaded again, the new PhysAddr being computed from lowaddr. */
+ kernel_size = load_elf(kernel_filename, kernel_base, NULL, &lowaddr, NULL);
+ if (kernel_size > 0 && lowaddr != KERNEL_LOAD_ADDR) {
+ kernel_size = load_elf(kernel_filename, (2 * kernel_base) - lowaddr,
+ NULL, 0, NULL);
+ }
+ if (kernel_size < 0)
+ kernel_size = load_aout(kernel_filename, kernel_base,
+ ram_size - kernel_base);
+ if (kernel_size < 0)
+ kernel_size = load_image_targphys(kernel_filename,
+ kernel_base,
+ ram_size - kernel_base);
if (kernel_size < 0) {
cpu_abort(env, "qemu: could not load kernel '%s'\n",
kernel_filename);
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_MAC99);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
QEMUMachine core99_machine = {
return 1; /* osi_call handled */
}
+static int fw_cfg_boot_set(void *opaque, const char *boot_device)
+{
+ fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
+ return 0;
+}
+
static void ppc_heathrow_init (ram_addr_t ram_size, int vga_ram_size,
const char *boot_device,
const char *kernel_filename,
CPUState *env = NULL, *envs[MAX_CPUS];
char buf[1024];
qemu_irq *pic, **heathrow_irqs;
- nvram_t nvram;
- m48t59_t *m48t59;
int linux_boot, i;
ram_addr_t ram_offset, vga_ram_offset, bios_offset, vga_bios_offset;
uint32_t kernel_base, initrd_base;
int vga_bios_size, bios_size;
int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index;
int escc_mem_index, ide_mem_index[2];
- int ppc_boot_device;
+ uint16_t ppc_boot_device;
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
int index;
void *fw_cfg;
if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
graphic_depth = 15;
- m48t59 = m48t59_init(0, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
- nvram.opaque = m48t59;
- nvram.read_fn = &m48t59_read;
- nvram.write_fn = &m48t59_write;
- PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "HEATHROW", ram_size,
- ppc_boot_device, kernel_base, kernel_size,
- kernel_cmdline,
- initrd_base, initrd_size,
- /* XXX: need an option to load a NVRAM image */
- 0,
- graphic_width, graphic_height, graphic_depth);
/* No PCI init: the BIOS will do it */
fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
QEMUMachine heathrow_machine = {
{
}
-static int nvram_boot_set(void *opaque, const char *boot_device)
+static int fw_cfg_boot_set(void *opaque, const char *boot_device)
{
- unsigned int i;
- uint8_t image[sizeof(ohwcfg_v3_t)];
- ohwcfg_v3_t *header = (ohwcfg_v3_t *)ℑ
- m48t59_t *nvram = (m48t59_t *)opaque;
-
- for (i = 0; i < sizeof(image); i++)
- image[i] = m48t59_read(nvram, i) & 0xff;
-
- pstrcpy((char *)header->boot_devices, sizeof(header->boot_devices),
- boot_device);
- header->nboot_devices = strlen(boot_device) & 0xff;
- header->crc = cpu_to_be16(OHW_compute_crc(header, 0x00, 0xF8));
-
- for (i = 0; i < sizeof(image); i++)
- m48t59_write(nvram, i, image[i]);
-
+ fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
return 0;
}
unsigned int i;
uint32_t start, end;
uint8_t image[0x1ff0];
- ohwcfg_v3_t *header = (ohwcfg_v3_t *)ℑ
- struct sparc_arch_cfg *sparc_header;
struct OpenBIOS_nvpart_v1 *part_header;
memset(image, '\0', sizeof(image));
- // Try to match PPC NVRAM
- pstrcpy((char *)header->struct_ident, sizeof(header->struct_ident),
- "QEMU_BIOS");
- header->struct_version = cpu_to_be32(3); /* structure v3 */
-
- header->nvram_size = cpu_to_be16(0x2000);
- header->nvram_arch_ptr = cpu_to_be16(sizeof(ohwcfg_v3_t));
- header->nvram_arch_size = cpu_to_be16(sizeof(struct sparc_arch_cfg));
- pstrcpy((char *)header->arch, sizeof(header->arch), arch);
- header->nb_cpus = smp_cpus & 0xff;
- header->RAM0_base = 0;
- header->RAM0_size = cpu_to_be64((uint64_t)RAM_size);
- pstrcpy((char *)header->boot_devices, sizeof(header->boot_devices),
- boot_devices);
- header->nboot_devices = strlen(boot_devices) & 0xff;
- header->kernel_image = cpu_to_be64((uint64_t)KERNEL_LOAD_ADDR);
- header->kernel_size = cpu_to_be64((uint64_t)kernel_size);
- if (cmdline) {
- pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, cmdline);
- header->cmdline = cpu_to_be64((uint64_t)CMDLINE_ADDR);
- header->cmdline_size = cpu_to_be64((uint64_t)strlen(cmdline));
- }
- // XXX add initrd_image, initrd_size
- header->width = cpu_to_be16(width);
- header->height = cpu_to_be16(height);
- header->depth = cpu_to_be16(depth);
- if (nographic)
- header->graphic_flags = cpu_to_be16(OHW_GF_NOGRAPHICS);
-
- header->crc = cpu_to_be16(OHW_compute_crc(header, 0x00, 0xF8));
-
- // Architecture specific header
- start = sizeof(ohwcfg_v3_t);
- sparc_header = (struct sparc_arch_cfg *)&image[start];
- sparc_header->valid = 0;
- start += sizeof(struct sparc_arch_cfg);
+ start = 0;
// OpenBIOS nvram variables
// Variable partition
for (i = 0; i < sizeof(image); i++)
m48t59_write(nvram, i, image[i]);
-
- qemu_register_boot_set(nvram_boot_set, nvram);
}
static void *slavio_intctl;
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_DEPTH, graphic_depth);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, KERNEL_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, 0); // not used
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device[0]);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
enum {
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_DEPTH, graphic_depth);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, KERNEL_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, 0); // not used
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device[0]);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
/* SPARCserver 1000 hardware initialisation */
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_DEPTH, graphic_depth);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, KERNEL_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, 0); // not used
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device[0]);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
/* SPARCstation 2 hardware initialisation */
{
}
-static int nvram_boot_set(void *opaque, const char *boot_device)
+static int fw_cfg_boot_set(void *opaque, const char *boot_device)
{
- unsigned int i;
- uint8_t image[sizeof(ohwcfg_v3_t)];
- ohwcfg_v3_t *header = (ohwcfg_v3_t *)ℑ
- m48t59_t *nvram = (m48t59_t *)opaque;
-
- for (i = 0; i < sizeof(image); i++)
- image[i] = m48t59_read(nvram, i) & 0xff;
-
- pstrcpy((char *)header->boot_devices, sizeof(header->boot_devices),
- boot_device);
- header->nboot_devices = strlen(boot_device) & 0xff;
- header->crc = cpu_to_be16(OHW_compute_crc(header, 0x00, 0xF8));
-
- for (i = 0; i < sizeof(image); i++)
- m48t59_write(nvram, i, image[i]);
-
+ fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
return 0;
}
unsigned int i;
uint32_t start, end;
uint8_t image[0x1ff0];
- ohwcfg_v3_t *header = (ohwcfg_v3_t *)ℑ
- struct sparc_arch_cfg *sparc_header;
struct OpenBIOS_nvpart_v1 *part_header;
memset(image, '\0', sizeof(image));
- // Try to match PPC NVRAM
- pstrcpy((char *)header->struct_ident, sizeof(header->struct_ident),
- "QEMU_BIOS");
- header->struct_version = cpu_to_be32(3); /* structure v3 */
-
- header->nvram_size = cpu_to_be16(NVRAM_size);
- header->nvram_arch_ptr = cpu_to_be16(sizeof(ohwcfg_v3_t));
- header->nvram_arch_size = cpu_to_be16(sizeof(struct sparc_arch_cfg));
- pstrcpy((char *)header->arch, sizeof(header->arch), arch);
- header->nb_cpus = smp_cpus & 0xff;
- header->RAM0_base = 0;
- header->RAM0_size = cpu_to_be64((uint64_t)RAM_size);
- pstrcpy((char *)header->boot_devices, sizeof(header->boot_devices),
- boot_devices);
- header->nboot_devices = strlen(boot_devices) & 0xff;
- header->kernel_image = cpu_to_be64((uint64_t)kernel_image);
- header->kernel_size = cpu_to_be64((uint64_t)kernel_size);
- if (cmdline) {
- pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, cmdline);
- header->cmdline = cpu_to_be64((uint64_t)CMDLINE_ADDR);
- header->cmdline_size = cpu_to_be64((uint64_t)strlen(cmdline));
- }
- header->initrd_image = cpu_to_be64((uint64_t)initrd_image);
- header->initrd_size = cpu_to_be64((uint64_t)initrd_size);
- header->NVRAM_image = cpu_to_be64((uint64_t)NVRAM_image);
-
- header->width = cpu_to_be16(width);
- header->height = cpu_to_be16(height);
- header->depth = cpu_to_be16(depth);
- if (nographic)
- header->graphic_flags = cpu_to_be16(OHW_GF_NOGRAPHICS);
-
- header->crc = cpu_to_be16(OHW_compute_crc(header, 0x00, 0xF8));
-
- // Architecture specific header
- start = sizeof(ohwcfg_v3_t);
- sparc_header = (struct sparc_arch_cfg *)&image[start];
- sparc_header->valid = 0;
- start += sizeof(struct sparc_arch_cfg);
+ start = 0;
// OpenBIOS nvram variables
// Variable partition
for (i = 0; i < sizeof(image); i++)
m48t59_write(nvram, i, image[i]);
- qemu_register_boot_set(nvram_boot_set, nvram);
-
return 0;
}
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, KERNEL_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
+ if (kernel_cmdline) {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
+ pstrcpy_targphys(CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
+ } else {
+ fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
+ }
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
+ fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_devices[0]);
+ qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
enum {
firmware implementation. The goal is to implement a 100% IEEE
1275-1994 (referred to as Open Firmware) compliant firmware.
The included images for Sparc32, Sparc64 and PowerPC (for 32 and 64 bit
- PPC CPUs) are built from OpenBIOS 1.0 release (SVN revision 463).
+ PPC CPUs) are built from OpenBIOS SVN revision 479.
- The PXE roms come from Rom-o-Matic etherboot 5.4.2.
pcnet32:pcnet32 -- [0x1022,0x2000]