+++ /dev/null
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * 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 <asm/byteorder.h>
-#include <asm/addrspace.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/arch/clk.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
-
-/* CPU-specific hook to allow flushing of caches, etc. */
-extern void prepare_to_boot(void);
-
-extern image_header_t header; /* from cmd_bootm.c */
-
-static struct tag *setup_start_tag(struct tag *params)
-{
- params->hdr.tag = ATAG_CORE;
- params->hdr.size = tag_size(tag_core);
-
- params->u.core.flags = 0;
- params->u.core.pagesize = 4096;
- params->u.core.rootdev = 0;
-
- return tag_next(params);
-}
-
-static struct tag *setup_memory_tags(struct tag *params)
-{
- bd_t *bd = gd->bd;
- int i;
-
- for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
- params->hdr.tag = ATAG_MEM;
- params->hdr.size = tag_size(tag_mem_range);
-
- params->u.mem_range.addr = bd->bi_dram[i].start;
- params->u.mem_range.size = bd->bi_dram[i].size;
-
- params = tag_next(params);
- }
-
- return params;
-}
-
-static struct tag *setup_commandline_tag(struct tag *params, char *cmdline)
-{
- if (!cmdline)
- return params;
-
- /* eat leading white space */
- while (*cmdline == ' ') cmdline++;
-
- /*
- * Don't include tags for empty command lines; let the kernel
- * use its default command line.
- */
- if (*cmdline == '\0')
- return params;
-
- params->hdr.tag = ATAG_CMDLINE;
- params->hdr.size =
- (sizeof (struct tag_header) + strlen(cmdline) + 1 + 3) >> 2;
- strcpy(params->u.cmdline.cmdline, cmdline);
-
- return tag_next(params);
-}
-
-static struct tag *setup_ramdisk_tag(struct tag *params,
- unsigned long rd_start,
- unsigned long rd_end)
-{
- if (rd_start == rd_end)
- return params;
-
- params->hdr.tag = ATAG_RDIMG;
- params->hdr.size = tag_size(tag_mem_range);
-
- params->u.mem_range.addr = rd_start;
- params->u.mem_range.size = rd_end - rd_start;
-
- return tag_next(params);
-}
-
-static struct tag *setup_clock_tags(struct tag *params)
-{
- params->hdr.tag = ATAG_CLOCK;
- params->hdr.size = tag_size(tag_clock);
- params->u.clock.clock_id = ACLOCK_BOOTCPU;
- params->u.clock.clock_flags = 0;
- params->u.clock.clock_hz = gd->cpu_hz;
-
-#ifdef CONFIG_AT32AP7000
- /*
- * New kernels don't need this, but we should be backwards
- * compatible for a while...
- */
- params = tag_next(params);
-
- params->hdr.tag = ATAG_CLOCK;
- params->hdr.size = tag_size(tag_clock);
- params->u.clock.clock_id = ACLOCK_HSB;
- params->u.clock.clock_flags = 0;
- params->u.clock.clock_hz = get_hsb_clk_rate();
-#endif
-
- return tag_next(params);
-}
-
-static struct tag *setup_ethernet_tag(struct tag *params,
- char *addr, int index)
-{
- char *s, *e;
- int i;
-
- params->hdr.tag = ATAG_ETHERNET;
- params->hdr.size = tag_size(tag_ethernet);
-
- params->u.ethernet.mac_index = index;
- params->u.ethernet.mii_phy_addr = gd->bd->bi_phy_id[index];
-
- s = addr;
- for (i = 0; i < 6; i++) {
- params->u.ethernet.hw_address[i] = simple_strtoul(s, &e, 16);
- s = e + 1;
- }
-
- return tag_next(params);
-}
-
-static struct tag *setup_ethernet_tags(struct tag *params)
-{
- char name[16] = "ethaddr";
- char *addr;
- int i = 0;
-
- do {
- addr = getenv(name);
- if (addr)
- params = setup_ethernet_tag(params, addr, i);
- sprintf(name, "eth%daddr", ++i);
- } while (i < 4);
-
- return params;
-}
-
-static void setup_end_tag(struct tag *params)
-{
- params->hdr.tag = ATAG_NONE;
- params->hdr.size = 0;
-}
-
-void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- unsigned long addr, unsigned long *len_ptr, int verify)
-{
- unsigned long data, len = 0;
- unsigned long initrd_start, initrd_end;
- unsigned long image_start, image_end;
- unsigned long checksum;
- void (*theKernel)(int magic, void *tagtable);
- image_header_t *hdr;
- struct tag *params, *params_start;
- char *commandline = getenv("bootargs");
-
- hdr = (image_header_t *)addr;
- image_start = addr;
- image_end = addr + hdr->ih_size;
-
- theKernel = (void *)ntohl(hdr->ih_ep);
-
- /*
- * Check if there is an initrd image
- */
- if (argc >= 3) {
- show_boot_progress (9);
-
- addr = simple_strtoul(argv[2], NULL, 16);
-
- printf("## Loading RAMDISK image at %08lx ...\n", addr);
-
- memcpy(&header, (char *)addr, sizeof(header));
- hdr = &header;
-
- if (ntohl(hdr->ih_magic) != IH_MAGIC) {
- puts("Bad Magic Number\n");
- show_boot_progress (-10);
- do_reset(cmdtp, flag, argc, argv);
- }
-
- data = (unsigned long)hdr;
- len = sizeof(*hdr);
- checksum = ntohl(hdr->ih_hcrc);
- hdr->ih_hcrc = 0;
-
- if (crc32(0, (unsigned char *)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(header);
- len = ntohl(hdr->ih_size);
-
- if (verify) {
- unsigned long csum = 0;
-
- puts(" Verifying Checksum ... ");
- csum = crc32(0, (unsigned char *)data, len);
- 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_AVR32) ||
- (hdr->ih_type != IH_TYPE_RAMDISK)) {
- puts("Not a Linux/AVR32 RAMDISK image\n");
- show_boot_progress (-13);
- do_reset(cmdtp, flag, argc, argv);
- }
- } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
- ulong 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) {
- initrd_start = data;
- initrd_end = initrd_start + len;
- } else {
- initrd_start = 0;
- initrd_end = 0;
- }
-
- show_boot_progress (15);
-
- params = params_start = (struct tag *)gd->bd->bi_boot_params;
- params = setup_start_tag(params);
- params = setup_memory_tags(params);
- if (initrd_start) {
- params = setup_ramdisk_tag(params,
- PHYSADDR(initrd_start),
- PHYSADDR(initrd_end));
- }
- params = setup_commandline_tag(params, commandline);
- params = setup_clock_tags(params);
- params = setup_ethernet_tags(params);
- setup_end_tag(params);
-
- printf("\nStarting kernel at %p (params at %p)...\n\n",
- theKernel, params_start);
-
- prepare_to_boot();
-
- theKernel(ATAG_MAGIC, params_start);
-}
projects / u-boot / blobdiff