unsigned long decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum, RESIDUAL *residual, void *OFW_interface) { #ifdef INTERACTIVE_CONSOLE int timer = 0; char ch; #endif extern unsigned long start; char *cp; /* Default to 32MiB memory. */ unsigned long TotalMemory = 0x02000000; int dev_handle; int mem_info[2]; int res, size; unsigned char board_type; unsigned char base_mod; int start_multi = 0; unsigned int pci_viddid, pci_did, tulip_pci_base, tulip_base; serial_fixups(); com_port = serial_init(0, NULL); #if defined(CONFIG_VGA_CONSOLE) vga_init((unsigned char *)0xC0000000); #endif /* CONFIG_VGA_CONSOLE */ /* * Tell the user where we were loaded at and where we were relocated * to for debugging this process. */ puts("loaded at: "); puthex(load_addr); puts(" "); puthex((unsigned long)(load_addr + (4*num_words))); puts("\n"); if ( (unsigned long)load_addr != (unsigned long)&start ) { puts("relocated to: "); puthex((unsigned long)&start); puts(" "); puthex((unsigned long)((unsigned long)&start + (4*num_words))); puts("\n"); } if (residual) { /* * Tell the user where the residual data is. */ puts("board data at: "); puthex((unsigned long)residual); puts(" "); puthex((unsigned long)((unsigned long)residual + sizeof(RESIDUAL))); puts("\nrelocated to: ");puthex((unsigned long)hold_residual); puts(" "); puthex((unsigned long)((unsigned long)hold_residual + sizeof(RESIDUAL))); puts("\n"); /* Is this Motorola PPCBug? */ if ((1 & residual->VitalProductData.FirmwareSupports) && (1 == residual->VitalProductData.FirmwareSupplier)) { board_type = inb(0x800) & 0xF0; /* * Reset the onboard 21x4x Ethernet * Motorola Ethernet is at IDSEL 14 (devfn 0x70) */ pci_read_config_32(0x70, 0x00, &pci_viddid); pci_did = (pci_viddid & 0xffff0000) >> 16; /* Be sure we've really found a 21x4x chip */ if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_DEC) && ((pci_did == PCI_DEVICE_ID_DEC_TULIP_FAST) || (pci_did == PCI_DEVICE_ID_DEC_TULIP) || (pci_did == PCI_DEVICE_ID_DEC_TULIP_PLUS) || (pci_did == PCI_DEVICE_ID_DEC_21142))) { pci_read_config_32(0x70, 0x10, &tulip_pci_base); /* Get the physical base address */ tulip_base = (tulip_pci_base & ~0x03UL) + 0x80000000; /* Strobe the 21x4x reset bit in CSR0 */ writel(0x1, tulip_base); } /* If this is genesis 2 board then check for no * keyboard controller and more than one processor. */ if (board_type == 0xe0) { base_mod = inb(0x803); /* if a MVME2300/2400 or a Sitka then no keyboard */ if((base_mod == 0xFA) || (base_mod == 0xF9) || (base_mod == 0xE1)) { keyb_present = 0; /* no keyboard */ } } /* If this is a multiprocessor system then * park the other processor so that the * kernel knows where to find them. */ if (residual->MaxNumCpus > 1) start_multi = 1; } memcpy(hold_residual,residual,sizeof(RESIDUAL)); /* Copy the memory info. */ if (residual->TotalMemory) TotalMemory = residual->TotalMemory; } else {
struct bi_record * decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum, void *ignored) { #ifdef INTERACTIVE_CONSOLE int timer = 0; char ch; #endif char *cp; struct bi_record *rec; unsigned long rec_loc, initrd_loc, TotalMemory = 0; serial_fixups(); com_port = serial_init(0, NULL); #ifdef CONFIG_LOPEC /* * This should work on any board with an MPC10X which is properly * initalized. */ TotalMemory = mpc10x_get_mem_size(MPC10X_MEM_MAP_B); #endif /* assume the chunk below 8M is free */ end_avail = (char *)0x00800000; /* * Reveal where we were loaded at and where we * were relocated to. */ puts("loaded at: "); puthex(load_addr); puts(" "); puthex((unsigned long)(load_addr + (4*num_words))); puts("\n"); if ( (unsigned long)load_addr != (unsigned long)&start ) { puts("relocated to: "); puthex((unsigned long)&start); puts(" "); puthex((unsigned long)((unsigned long)&start + (4*num_words))); puts("\n"); } /* * We link ourself to 0x00800000. When we run, we relocate * ourselves there. So we just need __image_begin for the * start. -- Tom */ zimage_start = (char *)(unsigned long)(&__image_begin); zimage_size = (unsigned long)(&__image_end) - (unsigned long)(&__image_begin); initrd_size = (unsigned long)(&__ramdisk_end) - (unsigned long)(&__ramdisk_begin); /* * The zImage and initrd will be between start and _end, so they've * already been moved once. We're good to go now. -- Tom */ avail_ram = (char *)PAGE_ALIGN((unsigned long)_end); puts("zimage at: "); puthex((unsigned long)zimage_start); puts(" "); puthex((unsigned long)(zimage_size+zimage_start)); puts("\n"); if ( initrd_size ) { puts("initrd at: "); puthex((unsigned long)(&__ramdisk_begin)); puts(" "); puthex((unsigned long)(&__ramdisk_end));puts("\n"); } avail_ram = (char *)0x00400000; end_avail = (char *)0x00800000; puts("avail ram: "); puthex((unsigned long)avail_ram); puts(" "); puthex((unsigned long)end_avail); puts("\n"); if (keyb_present) CRT_tstc(); /* Forces keyboard to be initialized */ #ifdef CONFIG_GEMINI /* * If cmd_line is empty and cmd_preset is not, copy cmd_preset * to cmd_line. This way we can override cmd_preset with the * command line from Smon. */ if ( (cmd_line[0] == '\0') && (cmd_preset[0] != '\0')) memcpy (cmd_line, cmd_preset, sizeof(cmd_preset)); #endif /* Display standard Linux/PPC boot prompt for kernel args */ puts("\nLinux/PPC load: "); cp = cmd_line; memcpy (cmd_line, cmd_preset, sizeof(cmd_preset)); while ( *cp ) putc(*cp++); #ifdef INTERACTIVE_CONSOLE /* * If they have a console, allow them to edit the command line. * Otherwise, don't bother wasting the five seconds. */ while (timer++ < 5*1000) { if (tstc()) { while ((ch = getc()) != '\n' && ch != '\r') { /* Test for backspace/delete */ if (ch == '\b' || ch == '\177') { if (cp != cmd_line) { cp--; puts("\b \b"); } /* Test for ^x/^u (and wipe the line) */ } else if (ch == '\030' || ch == '\025') { while (cp != cmd_line) { cp--; puts("\b \b"); } } else { *cp++ = ch; putc(ch); } } break; /* Exit 'timer' loop */ } udelay(1000); /* 1 msec */ } *cp = 0; #endif puts("\n"); puts("Uncompressing Linux..."); gunzip(0, 0x400000, zimage_start, &zimage_size); puts("done.\n"); /* * Create bi_recs for cmd_line and initrds */ rec_loc = _ALIGN((unsigned long)(zimage_size) + (1 << 20) - 1, (1 << 20)); rec = (struct bi_record *)rec_loc; /* We need to make sure that the initrd and bi_recs do not * overlap. */ if ( initrd_size ) { initrd_loc = (unsigned long)(&__ramdisk_begin); /* If the bi_recs are in the middle of the current * initrd, move the initrd to the next MB * boundary. */ if ((rec_loc > initrd_loc) && ((initrd_loc + initrd_size) > rec_loc)) { initrd_loc = _ALIGN((unsigned long)(zimage_size) + (2 << 20) - 1, (2 << 20)); memmove((void *)initrd_loc, &__ramdisk_begin, initrd_size); puts("initrd moved: "); puthex(initrd_loc); puts(" "); puthex(initrd_loc + initrd_size); puts("\n"); } } rec->tag = BI_FIRST; rec->size = sizeof(struct bi_record); rec = (struct bi_record *)((unsigned long)rec + rec->size); if ( TotalMemory ) { rec->tag = BI_MEMSIZE; rec->data[0] = TotalMemory; rec->size = sizeof(struct bi_record) + sizeof(unsigned long); rec = (struct bi_record *)((unsigned long)rec + rec->size); } rec->tag = BI_CMD_LINE; memcpy( (char *)rec->data, cmd_line, strlen(cmd_line)+1); rec->size = sizeof(struct bi_record) + strlen(cmd_line) + 1; rec = (struct bi_record *)((unsigned long)rec + rec->size); if ( initrd_size ) { rec->tag = BI_INITRD; rec->data[0] = initrd_loc; rec->data[1] = initrd_size; rec->size = sizeof(struct bi_record) + 2 * sizeof(unsigned long); rec = (struct bi_record *)((unsigned long)rec + rec->size); } rec->tag = BI_LAST; rec->size = sizeof(struct bi_record); rec = (struct bi_record *)((unsigned long)rec + rec->size); puts("Now booting the kernel\n"); serial_close(com_port); return (struct bi_record *)rec_loc; }
struct bi_record * decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum) { #ifdef INTERACTIVE_CONSOLE int timer = 0; char ch; #endif char *cp; struct bi_record *rec; unsigned long initrd_loc, TotalMemory = 0; serial_fixups(); #ifdef CONFIG_SERIAL_8250_CONSOLE com_port = serial_init(0, NULL); #endif #ifdef CONFIG_44x /* Reset MAL */ mtdcr(DCRN_MALCR(DCRN_MAL_BASE), MALCR_MMSR); /* Wait for reset */ while (mfdcr(DCRN_MALCR(DCRN_MAL_BASE)) & MALCR_MMSR) {}; /* Reset EMAC */ *(volatile unsigned long *)PPC44x_EMAC0_MR0 = 0x20000000; __asm__ __volatile__("eieio"); #endif /* * Call get_mem_size(), which is memory controller dependent, * and we must have the correct file linked in here. */ TotalMemory = get_mem_size(); /* assume the chunk below 8M is free */ end_avail = (char *)0x00800000; /* * Reveal where we were loaded at and where we * were relocated to. */ puts("loaded at: "); puthex(load_addr); puts(" "); puthex((unsigned long)(load_addr + (4*num_words))); puts("\n"); if ( (unsigned long)load_addr != (unsigned long)&start ) { puts("relocated to: "); puthex((unsigned long)&start); puts(" "); puthex((unsigned long)((unsigned long)&start + (4*num_words))); puts("\n"); } /* * We link ourself to 0x00800000. When we run, we relocate * ourselves there. So we just need __image_begin for the * start. -- Tom */ zimage_start = (char *)(unsigned long)(&__image_begin); zimage_size = (unsigned long)(&__image_end) - (unsigned long)(&__image_begin); initrd_size = (unsigned long)(&__ramdisk_end) - (unsigned long)(&__ramdisk_begin); /* * The zImage and initrd will be between start and _end, so they've * already been moved once. We're good to go now. -- Tom */ avail_ram = (char *)PAGE_ALIGN((unsigned long)_end); puts("zimage at: "); puthex((unsigned long)zimage_start); puts(" "); puthex((unsigned long)(zimage_size+zimage_start)); puts("\n"); if ( initrd_size ) { puts("initrd at: "); puthex((unsigned long)(&__ramdisk_begin)); puts(" "); puthex((unsigned long)(&__ramdisk_end));puts("\n"); } avail_ram = (char *)0x00400000; end_avail = (char *)0x00800000; puts("avail ram: "); puthex((unsigned long)avail_ram); puts(" "); puthex((unsigned long)end_avail); puts("\n"); if (keyb_present) CRT_tstc(); /* Forces keyboard to be initialized */ #ifdef CONFIG_GEMINI /* * If cmd_line is empty and cmd_preset is not, copy cmd_preset * to cmd_line. This way we can override cmd_preset with the * command line from Smon. */ if ( (cmd_line[0] == '\0') && (cmd_preset[0] != '\0')) memcpy (cmd_line, cmd_preset, sizeof(cmd_preset)); #endif /* Display standard Linux/PPC boot prompt for kernel args */ puts("\nLinux/PPC load: "); cp = cmd_line; memcpy (cmd_line, cmd_preset, sizeof(cmd_preset)); while ( *cp ) putc(*cp++); #ifdef INTERACTIVE_CONSOLE /* * If they have a console, allow them to edit the command line. * Otherwise, don't bother wasting the five seconds. */ while (timer++ < 5*1000) { if (tstc()) { while ((ch = getc()) != '\n' && ch != '\r') { /* Test for backspace/delete */ if (ch == '\b' || ch == '\177') { if (cp != cmd_line) { cp--; puts("\b \b"); } /* Test for ^x/^u (and wipe the line) */ } else if (ch == '\030' || ch == '\025') { while (cp != cmd_line) { cp--; puts("\b \b"); } } else { *cp++ = ch; putc(ch); } } break; /* Exit 'timer' loop */ } udelay(1000); /* 1 msec */ } *cp = 0; #endif puts("\n"); puts("Uncompressing Linux..."); gunzip(NULL, 0x400000, zimage_start, &zimage_size); puts("done.\n"); /* get the bi_rec address */ rec = bootinfo_addr(zimage_size); /* We need to make sure that the initrd and bi_recs do not * overlap. */ if ( initrd_size ) { unsigned long rec_loc = (unsigned long) rec; initrd_loc = (unsigned long)(&__ramdisk_begin); /* If the bi_recs are in the middle of the current * initrd, move the initrd to the next MB * boundary. */ if ((rec_loc > initrd_loc) && ((initrd_loc + initrd_size) > rec_loc)) { initrd_loc = _ALIGN((unsigned long)(zimage_size) + (2 << 20) - 1, (2 << 20)); memmove((void *)initrd_loc, &__ramdisk_begin, initrd_size); puts("initrd moved: "); puthex(initrd_loc); puts(" "); puthex(initrd_loc + initrd_size); puts("\n"); } } bootinfo_init(rec); if ( TotalMemory ) bootinfo_append(BI_MEMSIZE, sizeof(int), (void*)&TotalMemory); bootinfo_append(BI_CMD_LINE, strlen(cmd_line)+1, (void*)cmd_line); /* add a bi_rec for the initrd if it exists */ if (initrd_size) { unsigned long initrd[2]; initrd[0] = initrd_loc; initrd[1] = initrd_size; bootinfo_append(BI_INITRD, sizeof(initrd), &initrd); } puts("Now booting the kernel\n"); serial_close(com_port); return rec; }