diff options
Diffstat (limited to 'arch/sparc/lib/bootm.c')
| -rw-r--r-- | arch/sparc/lib/bootm.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/arch/sparc/lib/bootm.c b/arch/sparc/lib/bootm.c deleted file mode 100644 index 927a351013..0000000000 --- a/arch/sparc/lib/bootm.c +++ /dev/null @@ -1,166 +0,0 @@ -/* SPARC code for booting linux 2.6 - * - * (C) Copyright 2007 - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <command.h> -#include <asm/byteorder.h> -#include <asm/prom.h> -#include <asm/cache.h> -#include <image.h> - -#define PRINT_KERNEL_HEADER - -extern image_header_t header; -extern void srmmu_init_cpu(unsigned int entry); -extern void prepare_bootargs(char *bootargs); - -/* sparc kernel argument (the ROM vector) */ -struct linux_romvec *kernel_arg_promvec; - -/* page szie is 4k */ -#define PAGE_SIZE 0x1000 -#define RAMDISK_IMAGE_START_MASK 0x07FF -#define RAMDISK_PROMPT_FLAG 0x8000 -#define RAMDISK_LOAD_FLAG 0x4000 -struct __attribute__ ((packed)) { - char traptable[PAGE_SIZE]; - char swapper_pg_dir[PAGE_SIZE]; - char pg0[PAGE_SIZE]; - char pg1[PAGE_SIZE]; - char pg2[PAGE_SIZE]; - char pg3[PAGE_SIZE]; - char empty_bad_page[PAGE_SIZE]; - char empty_bad_page_table[PAGE_SIZE]; - char empty_zero_page[PAGE_SIZE]; - unsigned char hdr[4]; /* ascii "HdrS" */ - /* 00.02.06.0b is for Linux kernel 2.6.11 */ - unsigned char linuxver_mega_major; - unsigned char linuxver_major; - unsigned char linuxver_minor; - unsigned char linuxver_revision; - /* header version 0x0203 */ - unsigned short hdr_ver; - union __attribute__ ((packed)) { - struct __attribute__ ((packed)) { - unsigned short root_flags; - unsigned short root_dev; - unsigned short ram_flags; - unsigned int sparc_ramdisk_image; - unsigned int sparc_ramdisk_size; - unsigned int reboot_command; - unsigned int resv[3]; - unsigned int end; - } ver_0203; - } hdr_input; -} *linux_hdr; - -/* temporary initrd image holder */ -image_header_t ihdr; - -void arch_lmb_reserve(struct lmb *lmb) -{ - /* Reserve the space used by PROM and stack. This is done - * to avoid that the RAM image is copied over stack or - * PROM. - */ - lmb_reserve(lmb, CONFIG_SYS_RELOC_MONITOR_BASE, CONFIG_SYS_RAM_END); -} - -/* boot the linux kernel */ -int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t * images) -{ - char *bootargs; - ulong rd_len; - void (*kernel) (struct linux_romvec *, void *); - int ret; - - /* - * allow the PREP bootm subcommand, it is required for bootm to work - */ - if (flag & BOOTM_STATE_OS_PREP) - return 0; - - if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) - return 1; - - /* Get virtual address of kernel start */ - linux_hdr = (void *)images->os.load; - - /* */ - kernel = (void (*)(struct linux_romvec *, void *))images->ep; - - /* check for a SPARC kernel */ - if ((linux_hdr->hdr[0] != 'H') || - (linux_hdr->hdr[1] != 'd') || - (linux_hdr->hdr[2] != 'r') || (linux_hdr->hdr[3] != 'S')) { - puts("Error reading header of SPARC Linux kernel, aborting\n"); - goto error; - } -#ifdef PRINT_KERNEL_HEADER - printf("## Found SPARC Linux kernel %d.%d.%d ...\n", - linux_hdr->linuxver_major, - linux_hdr->linuxver_minor, linux_hdr->linuxver_revision); -#endif - - /* set basic boot params in kernel header now that it has been - * extracted and is writeable. - */ - - ret = image_setup_linux(images); - if (ret) { - puts("### Failed to relocate RAM disk\n"); - goto error; - } - - /* Calc length of RAM disk, if zero no ramdisk available */ - rd_len = images->rd_end - images->rd_start; - - if (rd_len) { - /* Update SPARC kernel header so that Linux knows - * what is going on and where to find RAM disk. - * - * Set INITRD Image address relative to RAM Start - */ - linux_hdr->hdr_input.ver_0203.sparc_ramdisk_image = - images->initrd_start - CONFIG_SYS_RAM_BASE; - linux_hdr->hdr_input.ver_0203.sparc_ramdisk_size = rd_len; - /* Clear READ ONLY flag if set to non-zero */ - linux_hdr->hdr_input.ver_0203.root_flags = 1; - /* Set root device to: Root_RAM0 */ - linux_hdr->hdr_input.ver_0203.root_dev = 0x100; - linux_hdr->hdr_input.ver_0203.ram_flags = 0; - } else { - /* NOT using RAMDISK image, overwriting kernel defaults */ - linux_hdr->hdr_input.ver_0203.sparc_ramdisk_image = 0; - linux_hdr->hdr_input.ver_0203.sparc_ramdisk_size = 0; - /* Leave to kernel defaults - linux_hdr->hdr_input.ver_0203.root_flags = 1; - linux_hdr->hdr_input.ver_0203.root_dev = 0; - linux_hdr->hdr_input.ver_0203.ram_flags = 0; - */ - } - - /* Copy bootargs from bootargs variable to kernel readable area */ - bootargs = getenv("bootargs"); - prepare_bootargs(bootargs); - - /* turn on mmu & setup context table & page table for process 0 (kernel) */ - srmmu_init_cpu((unsigned int)kernel); - - /* Enter SPARC Linux kernel - * From now on the only code in u-boot that will be - * executed is the PROM code. - */ - kernel(kernel_arg_promvec, (void *)images->ep); - - /* It will never come to this... */ - while (1) ; - - error: - return 1; -} |