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Diffstat (limited to 'arch/ppc/lib/bootm.c')
| -rw-r--r-- | arch/ppc/lib/bootm.c | 367 |
1 files changed, 0 insertions, 367 deletions
diff --git a/arch/ppc/lib/bootm.c b/arch/ppc/lib/bootm.c deleted file mode 100644 index 0685a93..0000000 --- a/arch/ppc/lib/bootm.c +++ /dev/null @@ -1,367 +0,0 @@ -/* - * (C) Copyright 2008 Semihalf - * - * (C) Copyright 2000-2006 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - - -#include <common.h> -#include <watchdog.h> -#include <command.h> -#include <image.h> -#include <malloc.h> -#include <u-boot/zlib.h> -#include <bzlib.h> -#include <environment.h> -#include <asm/byteorder.h> - -#if defined(CONFIG_OF_LIBFDT) -#include <fdt.h> -#include <libfdt.h> -#include <fdt_support.h> - -#endif - -#ifdef CONFIG_SYS_INIT_RAM_LOCK -#include <asm/cache.h> -#endif - -DECLARE_GLOBAL_DATA_PTR; - -extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); -extern ulong get_effective_memsize(void); -static ulong get_sp (void); -static void set_clocks_in_mhz (bd_t *kbd); - -#ifndef CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE -#define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE (768*1024*1024) -#endif - -static void boot_jump_linux(bootm_headers_t *images) -{ - void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6, - ulong r7, ulong r8, ulong r9); -#ifdef CONFIG_OF_LIBFDT - char *of_flat_tree = images->ft_addr; -#endif - - kernel = (void (*)(bd_t *, ulong, ulong, ulong, - ulong, ulong, ulong))images->ep; - debug ("## Transferring control to Linux (at address %08lx) ...\n", - (ulong)kernel); - - show_boot_progress (15); - -#if defined(CONFIG_SYS_INIT_RAM_LOCK) && !defined(CONFIG_E500) - unlock_ram_in_cache(); -#endif - -#if defined(CONFIG_OF_LIBFDT) - if (of_flat_tree) { /* device tree; boot new style */ - /* - * Linux Kernel Parameters (passing device tree): - * r3: pointer to the fdt - * r4: 0 - * r5: 0 - * r6: epapr magic - * r7: size of IMA in bytes - * r8: 0 - * r9: 0 - */ -#if defined(CONFIG_85xx) || defined(CONFIG_440) - #define EPAPR_MAGIC (0x45504150) -#else - #define EPAPR_MAGIC (0x65504150) -#endif - - debug (" Booting using OF flat tree...\n"); - WATCHDOG_RESET (); - (*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC, - CONFIG_SYS_BOOTMAPSZ, 0, 0); - /* does not return */ - } else -#endif - { - /* - * Linux Kernel Parameters (passing board info data): - * r3: ptr to board info data - * r4: initrd_start or 0 if no initrd - * r5: initrd_end - unused if r4 is 0 - * r6: Start of command line string - * r7: End of command line string - * r8: 0 - * r9: 0 - */ - ulong cmd_start = images->cmdline_start; - ulong cmd_end = images->cmdline_end; - ulong initrd_start = images->initrd_start; - ulong initrd_end = images->initrd_end; - bd_t *kbd = images->kbd; - - debug (" Booting using board info...\n"); - WATCHDOG_RESET (); - (*kernel) (kbd, initrd_start, initrd_end, - cmd_start, cmd_end, 0, 0); - /* does not return */ - } - return ; -} - -void arch_lmb_reserve(struct lmb *lmb) -{ - phys_size_t bootm_size; - ulong size, sp, bootmap_base; - - bootmap_base = getenv_bootm_low(); - bootm_size = getenv_bootm_size(); - -#ifdef DEBUG - if (((u64)bootmap_base + bootm_size) > - (CONFIG_SYS_SDRAM_BASE + (u64)gd->ram_size)) - puts("WARNING: bootm_low + bootm_size exceed total memory\n"); - if ((bootmap_base + bootm_size) > get_effective_memsize()) - puts("WARNING: bootm_low + bootm_size exceed eff. memory\n"); -#endif - - size = min(bootm_size, get_effective_memsize()); - size = min(size, CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE); - - if (size < bootm_size) { - ulong base = bootmap_base + size; - printf("WARNING: adjusting available memory to %lx\n", size); - lmb_reserve(lmb, base, bootm_size - size); - } - - /* - * Booting a (Linux) kernel image - * - * Allocate space for command line and board info - the - * address should be as high as possible within the reach of - * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused - * memory, which means far enough below the current stack - * pointer. - */ - sp = get_sp(); - debug ("## Current stack ends at 0x%08lx\n", sp); - - /* adjust sp by 1K to be safe */ - sp -= 1024; - lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - sp)); - - return ; -} - -static void boot_prep_linux(void) -{ -#ifdef CONFIG_MP - /* if we are MP make sure to flush the dcache() to any changes are made - * visibile to all other cores */ - flush_dcache(); -#endif - return ; -} - -static int boot_cmdline_linux(bootm_headers_t *images) -{ - ulong bootmap_base = getenv_bootm_low(); - ulong of_size = images->ft_len; - struct lmb *lmb = &images->lmb; - ulong *cmd_start = &images->cmdline_start; - ulong *cmd_end = &images->cmdline_end; - - int ret = 0; - - if (!of_size) { - /* allocate space and init command line */ - ret = boot_get_cmdline (lmb, cmd_start, cmd_end, bootmap_base); - if (ret) { - puts("ERROR with allocation of cmdline\n"); - return ret; - } - } - - return ret; -} - -static int boot_bd_t_linux(bootm_headers_t *images) -{ - ulong bootmap_base = getenv_bootm_low(); - ulong of_size = images->ft_len; - struct lmb *lmb = &images->lmb; - bd_t **kbd = &images->kbd; - - int ret = 0; - - if (!of_size) { - /* allocate space for kernel copy of board info */ - ret = boot_get_kbd (lmb, kbd, bootmap_base); - if (ret) { - puts("ERROR with allocation of kernel bd\n"); - return ret; - } - set_clocks_in_mhz(*kbd); - } - - return ret; -} - -static int boot_body_linux(bootm_headers_t *images) -{ - ulong rd_len; - struct lmb *lmb = &images->lmb; - ulong *initrd_start = &images->initrd_start; - ulong *initrd_end = &images->initrd_end; -#if defined(CONFIG_OF_LIBFDT) - ulong bootmap_base = getenv_bootm_low(); - ulong of_size = images->ft_len; - char **of_flat_tree = &images->ft_addr; -#endif - - int ret; - - /* allocate space and init command line */ - ret = boot_cmdline_linux(images); - if (ret) - return ret; - - /* allocate space for kernel copy of board info */ - ret = boot_bd_t_linux(images); - if (ret) - return ret; - - rd_len = images->rd_end - images->rd_start; - ret = boot_ramdisk_high (lmb, images->rd_start, rd_len, initrd_start, initrd_end); - if (ret) - return ret; - -#if defined(CONFIG_OF_LIBFDT) - ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size); - if (ret) - return ret; - - /* - * Add the chosen node if it doesn't exist, add the env and bd_t - * if the user wants it (the logic is in the subroutines). - */ - if (of_size) { - if (fdt_chosen(*of_flat_tree, 1) < 0) { - puts ("ERROR: "); - puts ("/chosen node create failed"); - puts (" - must RESET the board to recover.\n"); - return -1; - } -#ifdef CONFIG_OF_BOARD_SETUP - /* Call the board-specific fixup routine */ - ft_board_setup(*of_flat_tree, gd->bd); -#endif - - /* Delete the old LMB reservation */ - lmb_free(lmb, (phys_addr_t)(u32)*of_flat_tree, - (phys_size_t)fdt_totalsize(*of_flat_tree)); - - ret = fdt_resize(*of_flat_tree); - if (ret < 0) - return ret; - of_size = ret; - - if (*initrd_start && *initrd_end) - of_size += FDT_RAMDISK_OVERHEAD; - /* Create a new LMB reservation */ - lmb_reserve(lmb, (ulong)*of_flat_tree, of_size); - - /* fixup the initrd now that we know where it should be */ - if (*initrd_start && *initrd_end) - fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1); - } -#endif /* CONFIG_OF_LIBFDT */ - return 0; -} - -__attribute__((noinline)) -int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) -{ - int ret; - - if (flag & BOOTM_STATE_OS_CMDLINE) { - boot_cmdline_linux(images); - return 0; - } - - if (flag & BOOTM_STATE_OS_BD_T) { - boot_bd_t_linux(images); - return 0; - } - - if (flag & BOOTM_STATE_OS_PREP) { - boot_prep_linux(); - return 0; - } - - if (flag & BOOTM_STATE_OS_GO) { - boot_jump_linux(images); - return 0; - } - - boot_prep_linux(); - ret = boot_body_linux(images); - if (ret) - return ret; - boot_jump_linux(images); - - return 0; -} - -static ulong get_sp (void) -{ - ulong sp; - - asm( "mr %0,1": "=r"(sp) : ); - return sp; -} - -static void set_clocks_in_mhz (bd_t *kbd) -{ - char *s; - - if ((s = getenv ("clocks_in_mhz")) != NULL) { - /* convert all clock information to MHz */ - kbd->bi_intfreq /= 1000000L; - kbd->bi_busfreq /= 1000000L; -#if defined(CONFIG_MPC8220) - kbd->bi_inpfreq /= 1000000L; - kbd->bi_pcifreq /= 1000000L; - kbd->bi_pevfreq /= 1000000L; - kbd->bi_flbfreq /= 1000000L; - kbd->bi_vcofreq /= 1000000L; -#endif -#if defined(CONFIG_CPM2) - kbd->bi_cpmfreq /= 1000000L; - kbd->bi_brgfreq /= 1000000L; - kbd->bi_sccfreq /= 1000000L; - kbd->bi_vco /= 1000000L; -#endif -#if defined(CONFIG_MPC5xxx) - kbd->bi_ipbfreq /= 1000000L; - kbd->bi_pcifreq /= 1000000L; -#endif /* CONFIG_MPC5xxx */ - } -} |