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-rw-r--r--lib_m68k/m68k_linux.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c
deleted file mode 100644
index cc974c2..0000000
--- a/lib_m68k/m68k_linux.c
+++ /dev/null
@@ -1,340 +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 <common.h>
-#include <command.h>
-#include <image.h>
-#include <zlib.h>
-#include <bzlib.h>
-#include <watchdog.h>
-#include <environment.h>
-#include <asm/byteorder.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define PHYSADDR(x) x
-
-#define LINUX_MAX_ENVS 256
-#define LINUX_MAX_ARGS 256
-
-#define CHUNKSZ (64 * 1024)
-
-#ifdef CONFIG_SHOW_BOOT_PROGRESS
-# include <status_led.h>
-# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
-#else
-# define SHOW_BOOT_PROGRESS(arg)
-#endif
-
-extern image_header_t header;
-
-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 initrd_start, initrd_end;
- ulong cmd_start, cmd_end;
- ulong initrd_high;
- ulong data;
- int initrd_copy_to_ram = 1;
- 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,
- * 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))ntohl(hdr->ih_ep);
-
- /*
- * Check if there is an initrd image
- */
-
- if (argc >= 3) {
- debug("Not skipping initrd\n");
- SHOW_BOOT_PROGRESS(9);
-
- addr = simple_strtoul(argv[2], NULL, 16);
-
- 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) {
- 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) {
- puts("Bad Header Checksum\n");
- SHOW_BOOT_PROGRESS(-11);
- do_reset(cmdtp, flag, argc, argv);
- }
-
- SHOW_BOOT_PROGRESS(10);
-
- print_image_hdr(hdr);
-
- data = addr + sizeof(image_header_t);
- len = ntohl(hdr->ih_size);
-
- 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)) {
- puts("Bad Data CRC\n");
- SHOW_BOOT_PROGRESS(-12);
- do_reset(cmdtp, flag, argc, argv);
- }
- puts("OK\n");
- }
-
- SHOW_BOOT_PROGRESS(11);
-
- if ((hdr->ih_os != IH_OS_LINUX) ||
- (hdr->ih_arch != IH_CPU_M68K) ||
- (hdr->ih_type != 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 ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
- u_long tail = ntohl(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 += ntohl(len_ptr[0]);
- if (tail) {
- data += 4 - tail;
- }
-
- len = ntohl(len_ptr[1]);
-
- } else {
- /*
- * no initrd image
- */
- SHOW_BOOT_PROGRESS(14);
-
- len = data = 0;
- }
-
- if (!data) {
- debug("No initrd\n");
- }
-
- if (data) {
- if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */
- initrd_start = data;
- initrd_end = initrd_start + len;
- } else {
- initrd_start = (ulong) kbd - 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 -= 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",
- data, data + len - 1, len, len);
-
- 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 */
- 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 */
-}
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