| /kernel/trunk/arch/ppc32/src/console.c |
|---|
| 30,24 → 30,12 |
| #include <genarch/ofw/ofw.h> |
| #include <console/chardev.h> |
| #include <console/console.h> |
| #include <genarch/fb/fb.h> |
| /** Print one character. |
| * |
| * @param ch Character to be printed. |
| */ |
| static void ofw_ppc32_putchar(chardev_t *d, const char ch) |
| { |
| ofw_putchar(ch); |
| } |
| static chardev_t ofw_ppc32_console; |
| static chardev_operations_t ofw_ppc32_console_ops = { |
| .write = ofw_ppc32_putchar |
| }; |
| /** Initialize console to use ofw output */ |
| void ofw_ppc32_console_init(void) |
| void ppc32_console_init(void) |
| { |
| chardev_initialize("ofw_out", &ofw_ppc32_console, &ofw_ppc32_console_ops); |
| stdout = &ofw_ppc32_console; |
| /* TODO: PCI detection etc. etc. - this is fine in PearPC for now */ |
| fb_init(0x84000000,800,600,4); |
| } |
| /kernel/trunk/arch/ppc32/src/ppc32.c |
|---|
| 31,7 → 31,7 |
| void arch_pre_mm_init(void) |
| { |
| ofw_ppc32_console_init(); |
| ppc32_console_init(); |
| } |
| void arch_post_mm_init(void) |
| /kernel/trunk/arch/ppc32/src/mm/frame.c |
|---|
| 27,6 → 27,7 |
| */ |
| #include <arch/mm/frame.h> |
| #include <arch/mm/memory_init.h> |
| #include <mm/frame.h> |
| #include <config.h> |
| #include <panic.h> |
| 33,9 → 34,7 |
| void frame_arch_init(void) |
| { |
| /* First page is exception vector, |
| * second is 'implementation specific', evade it too |
| */ |
| zone_create(0, SIZE2FRAMES(config.memory_size), 2, 0); |
| ppc_init_zones(); |
| /* First is exception vector, second is 'implementation specific' */ |
| frame_mark_unavailable(0, 2); |
| } |
| /kernel/trunk/arch/ppc32/src/mm/memory_init.c |
|---|
| 29,6 → 29,8 |
| #include <arch/mm/memory_init.h> |
| #include <genarch/ofw/ofw.h> |
| #include <panic.h> |
| #include <mm/frame.h> |
| #include <align.h> |
| #define MEMMAP_MAX_RECORDS 32 |
| 37,25 → 39,52 |
| __u32 size; |
| } memmap_t; |
| size_t get_memory_size(void) |
| static memmap_t memmap[MEMMAP_MAX_RECORDS]; |
| size_t total_mem = 0; |
| static void init_memmap(void) |
| { |
| int i; |
| phandle handle = ofw_find_device("/memory"); |
| if (handle == -1) |
| panic("No RAM\n"); |
| memmap_t memmap[MEMMAP_MAX_RECORDS]; |
| size_t ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); |
| if (ret == -1) |
| panic("Device /memory has no reg property\n"); |
| size_t total = 0; |
| int i; |
| for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
| if (memmap[i].size == 0) |
| break; |
| total += memmap[i].size; |
| total_mem += memmap[i].size; |
| } |
| } |
| return total; |
| void preboot_read_config(void) |
| { |
| init_memmap(); |
| } |
| size_t get_memory_size(void) |
| { |
| return total_mem; |
| } |
| void ppc_init_zones(void) |
| { |
| int i; |
| pfn_t confdata; |
| for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
| if (memmap[i].size == 0) |
| break; |
| confdata = ADDR2PFN(memmap[i].start); |
| if (confdata == 0) |
| confdata = 2; |
| zone_create(ADDR2PFN(memmap[i].start), |
| SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), |
| confdata, 0); |
| } |
| } |
| /kernel/trunk/arch/ppc32/src/start.S |
|---|
| 27,16 → 27,71 |
| # |
| #include <arch/asm/macro.h> |
| #include <arch/asm/spr.h> |
| .section K_TEXT_START |
| .global kernel_image_start |
| .org 0x0 |
| /* 256 bytes of some data */ |
| /* exception table - must use 'ba' instructions for branches, |
| * because it is elsewhere than the linker thinks |
| */ |
| .space 4096 |
| kernel_image_start: |
| /* Initialize OFW, might be needed before relocate_kernel? */ |
| lis r4, ofw@ha |
| addi r4, r4, ofw@l |
| stw r5, 0(r4) |
| bl ofw_init |
| bl preboot_read_config |
| bl relocate_kernel |
| __after_reloc: |
| /* Set stack to some more meaningful value */ |
| /* TODO: This is hardcoded for PearPC, must be changed later */ |
| lis r1, 0x70 |
| b main_bsp |
| b main_bsp |
| relocate_kernel: |
| /* TODO: We _know_ that pearpc loads it to 8MB, and |
| * but it should be really generic |
| */ |
| lis r4, 0x80 /* r4 is where data was loaded - 8MB */ |
| bl to_real_mode |
| /* Now we are in real mode, copy first block and jump to it, |
| * we are running in the loaded kernel now |
| * We still have in r3 physical load kernel address |
| */ |
| b __after_reloc /* We know in pearpc we are ok, so return, |
| * otherwise we should relocate kernel |
| * here |
| */ |
| /* Turn off page translation |
| * - assume that physical-loaded address is in r4 |
| */ |
| to_real_mode: |
| mflr r0 |
| lis r5, ktext_start@ha // Expected start of kernel |
| addi r5, r5, ktext_start@l |
| add r0, r4, r0 |
| sub r0, r0, r5 // r0 now contains physical return address |
| mfmsr r3 |
| andis. r3, r3, (~MSR_DR | MSR_IR) >> 16 |
| mtspr SPRN_SRR0, r0 |
| mtspr SPRN_SRR1, r3 |
| sync // Really needed? RFI should do it as well? |
| RFI |