Revision d2c63fc1 hw/sun4m.c
| b/hw/sun4m.c | ||
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* THE SOFTWARE. |
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*/ |
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#include "vl.h" |
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#include "m48t59.h" |
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#include "firmware_abi.h" |
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//#define DEBUG_IRQ |
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/* |
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{
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} |
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static void nvram_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value) |
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{
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m48t59_write(nvram, addr++, (value >> 8) & 0xff); |
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m48t59_write(nvram, addr++, value & 0xff); |
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} |
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static void nvram_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value) |
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{
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m48t59_write(nvram, addr++, value >> 24); |
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m48t59_write(nvram, addr++, (value >> 16) & 0xff); |
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m48t59_write(nvram, addr++, (value >> 8) & 0xff); |
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m48t59_write(nvram, addr++, value & 0xff); |
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} |
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static void nvram_set_string (m48t59_t *nvram, uint32_t addr, |
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const unsigned char *str, uint32_t max) |
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{
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unsigned int i; |
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for (i = 0; i < max && str[i] != '\0'; i++) {
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m48t59_write(nvram, addr + i, str[i]); |
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} |
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m48t59_write(nvram, addr + max - 1, '\0'); |
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} |
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static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr, |
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const unsigned char *str) |
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{
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uint32_t len; |
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len = strlen(str) + 1; |
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nvram_set_string(nvram, addr, str, len); |
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return addr + len; |
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} |
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static void nvram_finish_partition (m48t59_t *nvram, uint32_t start, |
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uint32_t end) |
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{
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unsigned int i, sum; |
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// Length divided by 16 |
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m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff); |
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m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff); |
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// Checksum |
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sum = m48t59_read(nvram, start); |
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for (i = 0; i < 14; i++) {
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sum += m48t59_read(nvram, start + 2 + i); |
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff; |
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} |
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m48t59_write(nvram, start + 1, sum & 0xff); |
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} |
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extern int nographic; |
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static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline, |
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const char *boot_device, uint32_t RAM_size, |
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const char *boot_devices, uint32_t RAM_size,
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uint32_t kernel_size, |
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int width, int height, int depth, |
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int machine_id) |
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{
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unsigned char tmp = 0; |
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unsigned int i, j; |
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unsigned int i; |
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uint32_t start, end; |
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uint8_t image[0x1ff0]; |
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ohwcfg_v3_t *header = (ohwcfg_v3_t *)ℑ |
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struct sparc_arch_cfg *sparc_header; |
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struct OpenBIOS_nvpart_v1 *part_header; |
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memset(image, '\0', sizeof(image)); |
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// Try to match PPC NVRAM |
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nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16); |
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nvram_set_lword(nvram, 0x10, 0x00000001); /* structure v1 */ |
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// NVRAM_size, arch not applicable |
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m48t59_write(nvram, 0x2D, smp_cpus & 0xff); |
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m48t59_write(nvram, 0x2E, 0); |
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m48t59_write(nvram, 0x2F, nographic & 0xff); |
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nvram_set_lword(nvram, 0x30, RAM_size); |
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m48t59_write(nvram, 0x34, boot_device[0] & 0xff); |
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nvram_set_lword(nvram, 0x38, KERNEL_LOAD_ADDR); |
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nvram_set_lword(nvram, 0x3C, kernel_size); |
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strcpy(header->struct_ident, "QEMU_BIOS"); |
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header->struct_version = cpu_to_be32(3); /* structure v3 */ |
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header->nvram_size = cpu_to_be16(0x2000); |
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header->nvram_arch_ptr = cpu_to_be16(sizeof(ohwcfg_v3_t)); |
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header->nvram_arch_size = cpu_to_be16(sizeof(struct sparc_arch_cfg)); |
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strcpy(header->arch, "sun4m"); |
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header->nb_cpus = smp_cpus & 0xff; |
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header->RAM0_base = 0; |
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header->RAM0_size = cpu_to_be64((uint64_t)RAM_size); |
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strcpy(header->boot_devices, boot_devices); |
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header->nboot_devices = strlen(boot_devices) & 0xff; |
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header->kernel_image = cpu_to_be64((uint64_t)KERNEL_LOAD_ADDR); |
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header->kernel_size = cpu_to_be64((uint64_t)kernel_size); |
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if (cmdline) {
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strcpy(phys_ram_base + CMDLINE_ADDR, cmdline); |
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nvram_set_lword(nvram, 0x40, CMDLINE_ADDR);
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nvram_set_lword(nvram, 0x44, strlen(cmdline));
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header->cmdline = cpu_to_be64((uint64_t)CMDLINE_ADDR);
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header->cmdline_size = cpu_to_be64((uint64_t)strlen(cmdline));
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} |
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// initrd_image, initrd_size passed differently |
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nvram_set_word(nvram, 0x54, width); |
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nvram_set_word(nvram, 0x56, height); |
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nvram_set_word(nvram, 0x58, depth); |
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// XXX add initrd_image, initrd_size |
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header->width = cpu_to_be16(width); |
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header->height = cpu_to_be16(height); |
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header->depth = cpu_to_be16(depth); |
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if (nographic) |
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header->graphic_flags = cpu_to_be16(OHW_GF_NOGRAPHICS); |
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header->crc = cpu_to_be16(OHW_compute_crc(header, 0x00, 0xF8)); |
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// Architecture specific header |
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start = sizeof(ohwcfg_v3_t); |
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sparc_header = (struct sparc_arch_cfg *)&image[start]; |
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sparc_header->valid = 0; |
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start += sizeof(struct sparc_arch_cfg); |
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// OpenBIOS nvram variables |
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// Variable partition |
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start = 252;
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m48t59_write(nvram, start, 0x70);
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nvram_set_string(nvram, start + 4, "system", 12);
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part_header = (struct OpenBIOS_nvpart_v1 *)&image[start];
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part_header->signature = OPENBIOS_PART_SYSTEM;
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strcpy(part_header->name, "system");
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end = start + 16;
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end = start + sizeof(struct OpenBIOS_nvpart_v1);
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for (i = 0; i < nb_prom_envs; i++) |
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end = nvram_set_var(nvram, end, prom_envs[i]); |
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end = OpenBIOS_set_var(image, end, prom_envs[i]); |
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// End marker |
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image[end++] = '\0'; |
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m48t59_write(nvram, end++ , 0); |
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end = start + ((end - start + 15) & ~15); |
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nvram_finish_partition(nvram, start, end);
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OpenBIOS_finish_partition(part_header, end - start);
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// free partition |
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start = end; |
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m48t59_write(nvram, start, 0x7f); |
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nvram_set_string(nvram, start + 4, "free", 12); |
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part_header = (struct OpenBIOS_nvpart_v1 *)&image[start]; |
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part_header->signature = OPENBIOS_PART_FREE; |
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strcpy(part_header->name, "free"); |
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end = 0x1fd0; |
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nvram_finish_partition(nvram, start, end); |
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// Sun4m specific use |
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start = i = 0x1fd8; |
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m48t59_write(nvram, i++, 0x01); |
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m48t59_write(nvram, i++, machine_id); |
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j = 0; |
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m48t59_write(nvram, i++, macaddr[j++]); |
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m48t59_write(nvram, i++, macaddr[j++]); |
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m48t59_write(nvram, i++, macaddr[j++]); |
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m48t59_write(nvram, i++, macaddr[j++]); |
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m48t59_write(nvram, i++, macaddr[j++]); |
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m48t59_write(nvram, i, macaddr[j]); |
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/* Calculate checksum */ |
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for (i = start; i < start + 15; i++) {
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tmp ^= m48t59_read(nvram, i); |
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} |
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m48t59_write(nvram, start + 15, tmp); |
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OpenBIOS_finish_partition(part_header, end - start); |
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Sun_init_header((struct Sun_nvram *)&image[0x1fd8], macaddr, machine_id); |
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for (i = 0; i < sizeof(image); i++) |
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m48t59_write(nvram, i, image[i]); |
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} |
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static void *slavio_intctl; |
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