diff options
Diffstat (limited to 'common/cmd_bootldr.c')
| -rw-r--r-- | common/cmd_bootldr.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/common/cmd_bootldr.c b/common/cmd_bootldr.c deleted file mode 100644 index bc5c1f9..0000000 --- a/common/cmd_bootldr.c +++ /dev/null @@ -1,170 +0,0 @@ -/* - * U-boot - bootldr.c - * - * Copyright (c) 2005-2008 Analog Devices Inc. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * Licensed under the GPL-2 or later. - */ - -#include <config.h> -#include <common.h> -#include <command.h> - -#include <asm/blackfin.h> -#include <asm/mach-common/bits/bootrom.h> - -/* Simple sanity check on the specified address to make sure it contains - * an LDR image of some sort. - */ -static bool ldr_valid_signature(uint8_t *data) -{ -#if defined(__ADSPBF561__) - - /* BF56x has a 4 byte global header */ - if (data[3] == (GFLAG_56X_SIGN_MAGIC << (GFLAG_56X_SIGN_SHIFT - 24))) - return true; - -#elif defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \ - defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__) || \ - defined(__ADSPBF538__) || defined(__ADSPBF539__) - - /* all the BF53x should start at this address mask */ - uint32_t addr; - memmove(&addr, data, sizeof(addr)); - if ((addr & 0xFF0FFF0F) == 0xFF000000) - return true; -#else - - /* everything newer has a magic byte */ - uint32_t count; - memmove(&count, data + 8, sizeof(count)); - if (data[3] == 0xAD && count == 0) - return true; - -#endif - - return false; -} - -/* If the Blackfin is new enough, the Blackfin on-chip ROM supports loading - * LDRs from random memory addresses. So whenever possible, use that. In - * the older cases (BF53x/BF561), parse the LDR format ourselves. - */ -static void ldr_load(uint8_t *base_addr) -{ -#if defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \ - /*defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__) ||*/\ - defined(__ADSPBF538__) || defined(__ADSPBF539__) || defined(__ADSPBF561__) - - uint32_t addr; - uint32_t count; - uint16_t flags; - - /* the bf56x has a 4 byte global header ... but it is useless to - * us when booting an LDR from a memory address, so skip it - */ -# ifdef __ADSPBF561__ - base_addr += 4; -# endif - - memmove(&flags, base_addr + 8, sizeof(flags)); - bfin_write_EVT1(flags & BFLAG_53X_RESVECT ? 0xFFA00000 : 0xFFA08000); - - do { - /* block header may not be aligned */ - memmove(&addr, base_addr, sizeof(addr)); - memmove(&count, base_addr+4, sizeof(count)); - memmove(&flags, base_addr+8, sizeof(flags)); - base_addr += sizeof(addr) + sizeof(count) + sizeof(flags); - - printf("loading to 0x%08x (%#x bytes) flags: 0x%04x\n", - addr, count, flags); - - if (!(flags & BFLAG_53X_IGNORE)) { - if (flags & BFLAG_53X_ZEROFILL) - memset((void *)addr, 0x00, count); - else - memcpy((void *)addr, base_addr, count); - - if (flags & BFLAG_53X_INIT) { - void (*init)(void) = (void *)addr; - init(); - } - } - - if (!(flags & BFLAG_53X_ZEROFILL)) - base_addr += count; - } while (!(flags & BFLAG_53X_FINAL)); - -#endif -} - -/* For BF537, we use the _BOOTROM_BOOT_DXE_FLASH funky ROM function. - * For all other BF53x/BF56x, we just call the entry point. - * For everything else (newer), we use _BOOTROM_MEMBOOT ROM function. - */ -static void ldr_exec(void *addr) -{ -#if defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__) - - /* restore EVT1 to reset value as this is what the bootrom uses as - * the default entry point when booting the final block of LDRs - */ - bfin_write_EVT1(L1_INST_SRAM); - __asm__("call (%0);" : : "a"(_BOOTROM_MEMBOOT), "q7"(addr) : "RETS", "memory"); - -#elif defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \ - defined(__ADSPBF538__) || defined(__ADSPBF539__) || defined(__ADSPBF561__) - - void (*ldr_entry)(void) = (void *)bfin_read_EVT1(); - ldr_entry(); - -#else - - int32_t (*BOOTROM_MEM)(void *, int32_t, int32_t, void *) = (void *)_BOOTROM_MEMBOOT; - BOOTROM_MEM(addr, 0, 0, NULL); - -#endif -} - -/* - * the bootldr command loads an address, checks to see if there - * is a Boot stream that the on-chip BOOTROM can understand, - * and loads it via the BOOTROM Callback. It is possible - * to also add booting from SPI, or TWI, but this function does - * not currently support that. - */ -int do_bootldr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - void *addr; - - /* Get the address */ - if (argc < 2) - addr = (void *)load_addr; - else - addr = (void *)simple_strtoul(argv[1], NULL, 16); - - /* Check if it is a LDR file */ - if (ldr_valid_signature(addr)) { - printf("## Booting ldr image at 0x%p ...\n", addr); - ldr_load(addr); - - icache_disable(); - dcache_disable(); - - ldr_exec(addr); - } else - printf("## No ldr image at address 0x%p\n", addr); - - return 0; -} - -U_BOOT_CMD( - bootldr, 2, 0, do_bootldr, - "boot ldr image from memory", - "[addr]\n" - "" -); |