diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/boot/main.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/boot/main.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/boot/main.c b/ANDROID_3.4.5/arch/powerpc/boot/main.c deleted file mode 100644 index a28f0216..00000000 --- a/ANDROID_3.4.5/arch/powerpc/boot/main.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (C) Paul Mackerras 1997. - * - * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#include <stdarg.h> -#include <stddef.h> -#include "elf.h" -#include "page.h" -#include "string.h" -#include "stdio.h" -#include "ops.h" -#include "gunzip_util.h" -#include "reg.h" - -static struct gunzip_state gzstate; - -struct addr_range { - void *addr; - unsigned long size; -}; - -#undef DEBUG - -static struct addr_range prep_kernel(void) -{ - char elfheader[256]; - void *vmlinuz_addr = _vmlinux_start; - unsigned long vmlinuz_size = _vmlinux_end - _vmlinux_start; - void *addr = 0; - struct elf_info ei; - int len; - - /* gunzip the ELF header of the kernel */ - gunzip_start(&gzstate, vmlinuz_addr, vmlinuz_size); - gunzip_exactly(&gzstate, elfheader, sizeof(elfheader)); - - if (!parse_elf64(elfheader, &ei) && !parse_elf32(elfheader, &ei)) - fatal("Error: not a valid PPC32 or PPC64 ELF file!\n\r"); - - if (platform_ops.image_hdr) - platform_ops.image_hdr(elfheader); - - /* We need to alloc the memsize: gzip will expand the kernel - * text/data, then possible rubbish we don't care about. But - * the kernel bss must be claimed (it will be zero'd by the - * kernel itself) - */ - printf("Allocating 0x%lx bytes for kernel ...\n\r", ei.memsize); - - if (platform_ops.vmlinux_alloc) { - addr = platform_ops.vmlinux_alloc(ei.memsize); - } else { - /* - * Check if the kernel image (without bss) would overwrite the - * bootwrapper. The device tree has been moved in fdt_init() - * to an area allocated with malloc() (somewhere past _end). - */ - if ((unsigned long)_start < ei.loadsize) - fatal("Insufficient memory for kernel at address 0!" - " (_start=%p, uncompressed size=%08lx)\n\r", - _start, ei.loadsize); - - if ((unsigned long)_end < ei.memsize) - fatal("The final kernel image would overwrite the " - "device tree\n\r"); - } - - /* Finally, gunzip the kernel */ - printf("gunzipping (0x%p <- 0x%p:0x%p)...", addr, - vmlinuz_addr, vmlinuz_addr+vmlinuz_size); - /* discard up to the actual load data */ - gunzip_discard(&gzstate, ei.elfoffset - sizeof(elfheader)); - len = gunzip_finish(&gzstate, addr, ei.loadsize); - if (len != ei.loadsize) - fatal("ran out of data! only got 0x%x of 0x%lx bytes.\n\r", - len, ei.loadsize); - printf("done 0x%x bytes\n\r", len); - - flush_cache(addr, ei.loadsize); - - return (struct addr_range){addr, ei.memsize}; -} - -static struct addr_range prep_initrd(struct addr_range vmlinux, void *chosen, - unsigned long initrd_addr, - unsigned long initrd_size) -{ - /* If we have an image attached to us, it overrides anything - * supplied by the loader. */ - if (_initrd_end > _initrd_start) { - printf("Attached initrd image at 0x%p-0x%p\n\r", - _initrd_start, _initrd_end); - initrd_addr = (unsigned long)_initrd_start; - initrd_size = _initrd_end - _initrd_start; - } else if (initrd_size > 0) { - printf("Using loader supplied ramdisk at 0x%lx-0x%lx\n\r", - initrd_addr, initrd_addr + initrd_size); - } - - /* If there's no initrd at all, we're done */ - if (! initrd_size) - return (struct addr_range){0, 0}; - - /* - * If the initrd is too low it will be clobbered when the - * kernel relocates to its final location. In this case, - * allocate a safer place and move it. - */ - if (initrd_addr < vmlinux.size) { - void *old_addr = (void *)initrd_addr; - - printf("Allocating 0x%lx bytes for initrd ...\n\r", - initrd_size); - initrd_addr = (unsigned long)malloc(initrd_size); - if (! initrd_addr) - fatal("Can't allocate memory for initial " - "ramdisk !\n\r"); - printf("Relocating initrd 0x%lx <- 0x%p (0x%lx bytes)\n\r", - initrd_addr, old_addr, initrd_size); - memmove((void *)initrd_addr, old_addr, initrd_size); - } - - printf("initrd head: 0x%lx\n\r", *((unsigned long *)initrd_addr)); - - /* Tell the kernel initrd address via device tree */ - setprop_val(chosen, "linux,initrd-start", (u32)(initrd_addr)); - setprop_val(chosen, "linux,initrd-end", (u32)(initrd_addr+initrd_size)); - - return (struct addr_range){(void *)initrd_addr, initrd_size}; -} - -/* A buffer that may be edited by tools operating on a zImage binary so as to - * edit the command line passed to vmlinux (by setting /chosen/bootargs). - * The buffer is put in it's own section so that tools may locate it easier. - */ -static char cmdline[COMMAND_LINE_SIZE] - __attribute__((__section__("__builtin_cmdline"))); - -static void prep_cmdline(void *chosen) -{ - if (cmdline[0] == '\0') - getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1); - - printf("\n\rLinux/PowerPC load: %s", cmdline); - /* If possible, edit the command line */ - if (console_ops.edit_cmdline) - console_ops.edit_cmdline(cmdline, COMMAND_LINE_SIZE); - printf("\n\r"); - - /* Put the command line back into the devtree for the kernel */ - setprop_str(chosen, "bootargs", cmdline); -} - -struct platform_ops platform_ops; -struct dt_ops dt_ops; -struct console_ops console_ops; -struct loader_info loader_info; - -void start(void) -{ - struct addr_range vmlinux, initrd; - kernel_entry_t kentry; - unsigned long ft_addr = 0; - void *chosen; - - /* Do this first, because malloc() could clobber the loader's - * command line. Only use the loader command line if a - * built-in command line wasn't set by an external tool */ - if ((loader_info.cmdline_len > 0) && (cmdline[0] == '\0')) - memmove(cmdline, loader_info.cmdline, - min(loader_info.cmdline_len, COMMAND_LINE_SIZE-1)); - - if (console_ops.open && (console_ops.open() < 0)) - exit(); - if (platform_ops.fixups) - platform_ops.fixups(); - - printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", - _start, get_sp()); - - /* Ensure that the device tree has a /chosen node */ - chosen = finddevice("/chosen"); - if (!chosen) - chosen = create_node(NULL, "chosen"); - - vmlinux = prep_kernel(); - initrd = prep_initrd(vmlinux, chosen, - loader_info.initrd_addr, loader_info.initrd_size); - prep_cmdline(chosen); - - printf("Finalizing device tree..."); - if (dt_ops.finalize) - ft_addr = dt_ops.finalize(); - if (ft_addr) - printf(" flat tree at 0x%lx\n\r", ft_addr); - else - printf(" using OF tree (promptr=%p)\n\r", loader_info.promptr); - - if (console_ops.close) - console_ops.close(); - - kentry = (kernel_entry_t) vmlinux.addr; - if (ft_addr) - kentry(ft_addr, 0, NULL); - else - kentry((unsigned long)initrd.addr, initrd.size, - loader_info.promptr); - - /* console closed so printf in fatal below may not work */ - fatal("Error: Linux kernel returned to zImage boot wrapper!\n\r"); -} |