From b97a2a0a21f279d66de8a9bdbfe21920968bcb1c Mon Sep 17 00:00:00 2001 From: Marian Balakowicz Date: Tue, 8 Jan 2008 18:14:09 +0100 Subject: [new uImage] Define a API for image handling operations - Add inline helper macros for basic header processing - Move common non inline code common/image.c - Replace direct header access with the API routines - Rename IH_CPU_* to IH_ARCH_* Signed-off-by: Marian Balakowicz --- lib_m68k/m68k_linux.c | 64 +++++++++++++++------------------------------------ 1 file changed, 18 insertions(+), 46 deletions(-) (limited to 'lib_m68k/m68k_linux.c') diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c index cc974c2d60d..3759fd2d357 100644 --- a/lib_m68k/m68k_linux.c +++ b/lib_m68k/m68k_linux.c @@ -48,12 +48,14 @@ DECLARE_GLOBAL_DATA_PTR; extern image_header_t header; +int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); + void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[], ulong addr, ulong * len_ptr, int verify) { ulong sp; - ulong len, checksum; + ulong len; ulong initrd_start, initrd_end; ulong cmd_start, cmd_end; ulong initrd_high; @@ -131,7 +133,7 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, } kernel = - (void (*)(bd_t *, ulong, ulong, ulong, ulong))ntohl(hdr->ih_ep); + (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr); /* * Check if there is an initrd image @@ -142,25 +144,17 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, SHOW_BOOT_PROGRESS(9); addr = simple_strtoul(argv[2], NULL, 16); + hdr = (image_header_t *)addr; printf("## Loading RAMDisk Image at %08lx ...\n", addr); - /* Copy header so we can blank CRC field for re-calculation */ - memmove(&header, (char *)addr, sizeof(image_header_t)); - - if (ntohl(hdr->ih_magic) != IH_MAGIC) { + if (!image_check_magic (hdr)) { puts("Bad Magic Number\n"); SHOW_BOOT_PROGRESS(-10); do_reset(cmdtp, flag, argc, argv); } - data = (ulong) & header; - len = sizeof(image_header_t); - - checksum = ntohl(hdr->ih_hcrc); - hdr->ih_hcrc = 0; - - if (crc32(0, (uchar *) data, len) != checksum) { + if (!image_check_hcrc (hdr)) { puts("Bad Header Checksum\n"); SHOW_BOOT_PROGRESS(-11); do_reset(cmdtp, flag, argc, argv); @@ -168,36 +162,14 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, SHOW_BOOT_PROGRESS(10); - print_image_hdr(hdr); + print_image_hdr (hdr); - data = addr + sizeof(image_header_t); - len = ntohl(hdr->ih_size); + data = image_get_data (hdr); + len = image_get_data_size (hdr); if (verify) { - ulong csum = 0; -#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) - ulong cdata = data, edata = cdata + len; -#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ - puts(" Verifying Checksum ... "); - -#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) - - while (cdata < edata) { - ulong chunk = edata - cdata; - - if (chunk > CHUNKSZ) - chunk = CHUNKSZ; - csum = crc32(csum, (uchar *) cdata, chunk); - cdata += chunk; - - WATCHDOG_RESET(); - } -#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ - csum = crc32(0, (uchar *) data, len); -#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ - - if (csum != ntohl(hdr->ih_dcrc)) { + if (!image_check_dcrc_wd (hdr, CHUNKSZ)) { puts("Bad Data CRC\n"); SHOW_BOOT_PROGRESS(-12); do_reset(cmdtp, flag, argc, argv); @@ -207,9 +179,9 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, SHOW_BOOT_PROGRESS(11); - if ((hdr->ih_os != IH_OS_LINUX) || - (hdr->ih_arch != IH_CPU_M68K) || - (hdr->ih_type != IH_TYPE_RAMDISK)) { + if (!image_check_os (hdr, IH_OS_LINUX) || + !image_check_arch (hdr, IH_ARCH_M68K) || + !image_check_type (hdr, IH_TYPE_RAMDISK)) { puts("No Linux ColdFire Ramdisk Image\n"); SHOW_BOOT_PROGRESS(-13); do_reset(cmdtp, flag, argc, argv); @@ -218,8 +190,8 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, /* * Now check if we have a multifile image */ - } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) { - u_long tail = ntohl(len_ptr[0]) % 4; + } else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) { + u_long tail = image_to_cpu (len_ptr[0]) % 4; int i; SHOW_BOOT_PROGRESS(13); @@ -230,12 +202,12 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, for (i = 1; len_ptr[i]; ++i) data += 4; /* add kernel length, and align */ - data += ntohl(len_ptr[0]); + data += image_to_cpu (len_ptr[0]); if (tail) { data += 4 - tail; } - len = ntohl(len_ptr[1]); + len = image_to_cpu (len_ptr[1]); } else { /* -- cgit v1.2.3 From 559316faf7eae0614c91d77f509b57d6c4c091ba Mon Sep 17 00:00:00 2001 From: Marian Balakowicz Date: Tue, 8 Jan 2008 18:11:44 +0100 Subject: [new uImage] Move CHUNKSZ definition to image.h CHUNKSZ defined for PPC and M68K is set to the same value of 64K, move this definition to a common header. Signed-off-by: Marian Balakowicz --- lib_m68k/m68k_linux.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'lib_m68k/m68k_linux.c') diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c index 3759fd2d357..f865c0c6a5a 100644 --- a/lib_m68k/m68k_linux.c +++ b/lib_m68k/m68k_linux.c @@ -37,8 +37,6 @@ DECLARE_GLOBAL_DATA_PTR; #define LINUX_MAX_ENVS 256 #define LINUX_MAX_ARGS 256 -#define CHUNKSZ (64 * 1024) - #ifdef CONFIG_SHOW_BOOT_PROGRESS # include # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) -- cgit v1.2.3 From af13cdbc01eaf88880978bfb4f603e012818ba24 Mon Sep 17 00:00:00 2001 From: Marian Balakowicz Date: Tue, 8 Jan 2008 18:11:45 +0100 Subject: [new uImage] Add memmove_wd() common routine Move common, watchdog sensible memmove code to a helper memmmove_wd() routine. Signed-off-by: Marian Balakowicz --- lib_m68k/m68k_linux.c | 23 ++++------------------- 1 file changed, 4 insertions(+), 19 deletions(-) (limited to 'lib_m68k/m68k_linux.c') diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c index f865c0c6a5a..0af2eae5688 100644 --- a/lib_m68k/m68k_linux.c +++ b/lib_m68k/m68k_linux.c @@ -266,25 +266,10 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, initrd_end = initrd_start + len; printf(" Loading Ramdisk to %08lx, end %08lx ... ", initrd_start, initrd_end); -#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) - { - size_t l = len; - void *to = (void *)initrd_start; - void *from = (void *)data; - - while (l > 0) { - size_t tail = - (l > CHUNKSZ) ? CHUNKSZ : l; - WATCHDOG_RESET(); - memmove(to, from, tail); - to += tail; - from += tail; - l -= tail; - } - } -#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ - memmove((void *)initrd_start, (void *)data, len); -#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ + + memmove_wd((void *)initrd_start, + (void *)data, len, CHUNKSZ); + puts("OK\n"); } } else { -- cgit v1.2.3 From f13e7b2e993c61fed1f607962501e051940d6e80 Mon Sep 17 00:00:00 2001 From: Marian Balakowicz Date: Tue, 8 Jan 2008 18:12:17 +0100 Subject: [new uImage] Cleanup image header pointer use in bootm code - use single image header pointer instead of a set of auxilliary variables. - add multi component image helper routines: get component size/data address Signed-off-by: Marian Balakowicz --- lib_m68k/m68k_linux.c | 84 +++++++++++++++++++++------------------------------ 1 file changed, 34 insertions(+), 50 deletions(-) (limited to 'lib_m68k/m68k_linux.c') diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c index 0af2eae5688..b135556a99d 100644 --- a/lib_m68k/m68k_linux.c +++ b/lib_m68k/m68k_linux.c @@ -44,26 +44,25 @@ DECLARE_GLOBAL_DATA_PTR; # define SHOW_BOOT_PROGRESS(arg) #endif -extern image_header_t header; - int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[], - ulong addr, ulong * len_ptr, int verify) + image_header_t *hdr, int verify) { ulong sp; - ulong len; - ulong initrd_start, initrd_end; - ulong cmd_start, cmd_end; + + ulong rd_data, rd_len; ulong initrd_high; - ulong data; + ulong initrd_start, initrd_end; + image_header_t *rd_hdr; int initrd_copy_to_ram = 1; + + ulong cmd_start, cmd_end; char *cmdline; char *s; bd_t *kbd; void (*kernel) (bd_t *, ulong, ulong, ulong, ulong); - image_header_t *hdr = &header; if ((s = getenv("initrd_high")) != NULL) { /* a value of "no" or a similar string will act like 0, @@ -141,18 +140,16 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, debug("Not skipping initrd\n"); SHOW_BOOT_PROGRESS(9); - addr = simple_strtoul(argv[2], NULL, 16); - hdr = (image_header_t *)addr; + rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16); + printf ("## Loading RAMDisk Image at %08lx ...\n", rd_hdr); - printf("## Loading RAMDisk Image at %08lx ...\n", addr); - - if (!image_check_magic (hdr)) { + if (!image_check_magic (rd_hdr)) { puts("Bad Magic Number\n"); SHOW_BOOT_PROGRESS(-10); do_reset(cmdtp, flag, argc, argv); } - if (!image_check_hcrc (hdr)) { + if (!image_check_hcrc (rd_hdr)) { puts("Bad Header Checksum\n"); SHOW_BOOT_PROGRESS(-11); do_reset(cmdtp, flag, argc, argv); @@ -160,14 +157,14 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, SHOW_BOOT_PROGRESS(10); - print_image_hdr (hdr); + print_image_hdr (rd_hdr); - data = image_get_data (hdr); - len = image_get_data_size (hdr); + rd_data = image_get_data (rd_hdr); + rd_len = image_get_data_size (rd_hdr); if (verify) { puts(" Verifying Checksum ... "); - if (!image_check_dcrc_wd (hdr, CHUNKSZ)) { + if (!image_check_dcrc_wd (rd_hdr, CHUNKSZ)) { puts("Bad Data CRC\n"); SHOW_BOOT_PROGRESS(-12); do_reset(cmdtp, flag, argc, argv); @@ -177,9 +174,9 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, SHOW_BOOT_PROGRESS(11); - if (!image_check_os (hdr, IH_OS_LINUX) || - !image_check_arch (hdr, IH_ARCH_M68K) || - !image_check_type (hdr, IH_TYPE_RAMDISK)) { + if (!image_check_os (rd_hdr, IH_OS_LINUX) || + !image_check_arch (rd_hdr, IH_ARCH_M68K) || + !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) { puts("No Linux ColdFire Ramdisk Image\n"); SHOW_BOOT_PROGRESS(-13); do_reset(cmdtp, flag, argc, argv); @@ -188,44 +185,31 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, /* * Now check if we have a multifile image */ - } else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) { - u_long tail = image_to_cpu (len_ptr[0]) % 4; - int i; - - SHOW_BOOT_PROGRESS(13); - - /* skip kernel length and terminator */ - data = (ulong) (&len_ptr[2]); - /* skip any additional image length fields */ - for (i = 1; len_ptr[i]; ++i) - data += 4; - /* add kernel length, and align */ - data += image_to_cpu (len_ptr[0]); - if (tail) { - data += 4 - tail; - } - - len = image_to_cpu (len_ptr[1]); - + } else if (image_check_type (hdr, IH_TYPE_MULTI)) { + /* + * Get second entry data start address and len + */ + SHOW_BOOT_PROGRESS (13); + image_multi_getimg (hdr, 1, &rd_data, &rd_len); } else { /* * no initrd image */ SHOW_BOOT_PROGRESS(14); - len = data = 0; + rd_len = rd_data = 0; } - if (!data) { + if (!rd_data) { debug("No initrd\n"); } - if (data) { + if (rd_data) { if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ - initrd_start = data; - initrd_end = initrd_start + len; + initrd_start = rd_data; + initrd_end = initrd_start + rd_len; } else { - initrd_start = (ulong) kbd - len; + initrd_start = (ulong) kbd - rd_len; initrd_start &= ~(4096 - 1); /* align on page */ if (initrd_high) { @@ -250,7 +234,7 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, if (nsp > initrd_high) /* limit as specified */ nsp = initrd_high; - nsp -= len; + nsp -= rd_len; nsp &= ~(4096 - 1); /* align on page */ if (nsp >= sp) @@ -261,14 +245,14 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, debug ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", - data, data + len - 1, len, len); + rd_data, rd_data + rd_len - 1, rd_len, rd_len); - initrd_end = initrd_start + len; + initrd_end = initrd_start + rd_len; printf(" Loading Ramdisk to %08lx, end %08lx ... ", initrd_start, initrd_end); memmove_wd((void *)initrd_start, - (void *)data, len, CHUNKSZ); + (void *)rd_data, rd_len, CHUNKSZ); puts("OK\n"); } -- cgit v1.2.3 From 4a995edec1ac163d9326d143ffe2b47e7543407f Mon Sep 17 00:00:00 2001 From: Marian Balakowicz Date: Thu, 31 Jan 2008 13:20:06 +0100 Subject: [new uImage] Rename architecture specific bootm code files Implementation of the do_bootm_linux() and other bootm helper routines is architecture specific code. As such it resides in lib_ directories in files named _linux.c This patch renames those files to a more clear and accurate lib_/bootm.c form. List of the renamed files: lib_arm/armlinux.c -> lib_arm/bootm.c lib_avr32/avr32_linux.c -> lib_avr32/bootm.c lib_blackfin/bf533_linux.c -> lib_blackfin/bootm.c lib_i386/i386_linux.c -> lib_i386/bootm.c lib_m68k/m68k_linux.c -> lib_m68k/bootm.c lib_microblaze/microblaze_linux.c -> lib_microblaze/bootm.c lib_mips/mips_linux.c -> lib_mips/bootm.c lib_nios/nios_linux.c -> lib_nios/bootm.c lib_nios2/nios_linux.c -> lib_nios2/bootm.c lib_ppc/ppc_linux.c -> lib_ppc/bootm.c lib_sh/sh_linux.c -> lib_sh/bootm.c Signed-off-by: Marian Balakowicz --- lib_m68k/m68k_linux.c | 279 -------------------------------------------------- 1 file changed, 279 deletions(-) delete mode 100644 lib_m68k/m68k_linux.c (limited to 'lib_m68k/m68k_linux.c') diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c deleted file mode 100644 index b135556a99d..00000000000 --- a/lib_m68k/m68k_linux.c +++ /dev/null @@ -1,279 +0,0 @@ -/* - * (C) Copyright 2003 - * 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 -#include -#include -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -#define PHYSADDR(x) x - -#define LINUX_MAX_ENVS 256 -#define LINUX_MAX_ARGS 256 - -#ifdef CONFIG_SHOW_BOOT_PROGRESS -# include -# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) -#else -# define SHOW_BOOT_PROGRESS(arg) -#endif - -int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); - -void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, - int argc, char *argv[], - image_header_t *hdr, int verify) -{ - ulong sp; - - ulong rd_data, rd_len; - ulong initrd_high; - ulong initrd_start, initrd_end; - image_header_t *rd_hdr; - int initrd_copy_to_ram = 1; - - ulong cmd_start, cmd_end; - char *cmdline; - char *s; - bd_t *kbd; - void (*kernel) (bd_t *, ulong, ulong, ulong, ulong); - - if ((s = getenv("initrd_high")) != NULL) { - /* a value of "no" or a similar string will act like 0, - * turning the "load high" feature off. This is intentional. - */ - initrd_high = simple_strtoul(s, NULL, 16); - if (initrd_high == ~0) - initrd_copy_to_ram = 0; - } else { /* not set, no restrictions to load high */ - initrd_high = ~0; - } - -#ifdef CONFIG_LOGBUFFER - kbd = gd->bd; - /* Prevent initrd from overwriting logbuffer */ - if (initrd_high < (kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD)) - initrd_high = kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD; - debug("## Logbuffer at 0x%08lX ", kbd->bi_memsize - LOGBUFF_LEN); -#endif - - /* - * 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 CFG_BOOTMAPSZ settings), but in unused - * memory, which means far enough below the current stack - * pointer. - */ - asm("movel %%a7, %%d0\n" - "movel %%d0, %0\n": "=d"(sp): :"%d0"); - - debug("## Current stack ends at 0x%08lX ", sp); - - sp -= 2048; /* just to be sure */ - if (sp > CFG_BOOTMAPSZ) - sp = CFG_BOOTMAPSZ; - sp &= ~0xF; - - debug("=> set upper limit to 0x%08lX\n", sp); - - cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF); - kbd = (bd_t *) (((ulong) cmdline - sizeof(bd_t)) & ~0xF); - - if ((s = getenv("bootargs")) == NULL) - s = ""; - - strcpy(cmdline, s); - - cmd_start = (ulong) & cmdline[0]; - cmd_end = cmd_start + strlen(cmdline); - - *kbd = *(gd->bd); - -#ifdef DEBUG - printf("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end); - - do_bdinfo(NULL, 0, 0, NULL); -#endif - - if ((s = getenv("clocks_in_mhz")) != NULL) { - /* convert all clock information to MHz */ - kbd->bi_intfreq /= 1000000L; - kbd->bi_busfreq /= 1000000L; - } - - kernel = - (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr); - - /* - * Check if there is an initrd image - */ - - if (argc >= 3) { - debug("Not skipping initrd\n"); - SHOW_BOOT_PROGRESS(9); - - rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16); - printf ("## Loading RAMDisk Image at %08lx ...\n", rd_hdr); - - if (!image_check_magic (rd_hdr)) { - puts("Bad Magic Number\n"); - SHOW_BOOT_PROGRESS(-10); - do_reset(cmdtp, flag, argc, argv); - } - - if (!image_check_hcrc (rd_hdr)) { - puts("Bad Header Checksum\n"); - SHOW_BOOT_PROGRESS(-11); - do_reset(cmdtp, flag, argc, argv); - } - - SHOW_BOOT_PROGRESS(10); - - print_image_hdr (rd_hdr); - - rd_data = image_get_data (rd_hdr); - rd_len = image_get_data_size (rd_hdr); - - if (verify) { - puts(" Verifying Checksum ... "); - if (!image_check_dcrc_wd (rd_hdr, CHUNKSZ)) { - puts("Bad Data CRC\n"); - SHOW_BOOT_PROGRESS(-12); - do_reset(cmdtp, flag, argc, argv); - } - puts("OK\n"); - } - - SHOW_BOOT_PROGRESS(11); - - if (!image_check_os (rd_hdr, IH_OS_LINUX) || - !image_check_arch (rd_hdr, IH_ARCH_M68K) || - !image_check_type (rd_hdr, IH_TYPE_RAMDISK)) { - puts("No Linux ColdFire Ramdisk Image\n"); - SHOW_BOOT_PROGRESS(-13); - do_reset(cmdtp, flag, argc, argv); - } - - /* - * Now check if we have a multifile image - */ - } else if (image_check_type (hdr, IH_TYPE_MULTI)) { - /* - * Get second entry data start address and len - */ - SHOW_BOOT_PROGRESS (13); - image_multi_getimg (hdr, 1, &rd_data, &rd_len); - } else { - /* - * no initrd image - */ - SHOW_BOOT_PROGRESS(14); - - rd_len = rd_data = 0; - } - - if (!rd_data) { - debug("No initrd\n"); - } - - if (rd_data) { - if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ - initrd_start = rd_data; - initrd_end = initrd_start + rd_len; - } else { - initrd_start = (ulong) kbd - rd_len; - initrd_start &= ~(4096 - 1); /* align on page */ - - if (initrd_high) { - ulong nsp; - - /* - * the inital ramdisk does not need to be within - * CFG_BOOTMAPSZ as it is not accessed until after - * the mm system is initialised. - * - * do the stack bottom calculation again and see if - * the initrd will fit just below the monitor stack - * bottom without overwriting the area allocated - * above for command line args and board info. - */ - asm("movel %%a7, %%d0\n" - "movel %%d0, %0\n": "=d"(nsp): :"%d0"); - - nsp -= 2048; /* just to be sure */ - nsp &= ~0xF; - - if (nsp > initrd_high) /* limit as specified */ - nsp = initrd_high; - - nsp -= rd_len; - nsp &= ~(4096 - 1); /* align on page */ - - if (nsp >= sp) - initrd_start = nsp; - } - - SHOW_BOOT_PROGRESS(12); - - debug - ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", - rd_data, rd_data + rd_len - 1, rd_len, rd_len); - - initrd_end = initrd_start + rd_len; - printf(" Loading Ramdisk to %08lx, end %08lx ... ", - initrd_start, initrd_end); - - memmove_wd((void *)initrd_start, - (void *)rd_data, rd_len, CHUNKSZ); - - puts("OK\n"); - } - } else { - initrd_start = 0; - initrd_end = 0; - } - - debug("## Transferring control to Linux (at address %08lx) ...\n", - (ulong) kernel); - - SHOW_BOOT_PROGRESS(15); - - /* - * 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 - */ - (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); - /* does not return */ -} -- cgit v1.2.3