Simple command to decode/check an LDR image before we try to boot it.
Signed-off-by: Mike Frysinger vapier@gentoo.org --- README | 1 + common/Makefile | 1 + common/cmd_ldrinfo.c | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 194 insertions(+), 0 deletions(-) create mode 100644 common/cmd_ldrinfo.c
diff --git a/README b/README index 21cd71b..5f46dd1 100644 --- a/README +++ b/README @@ -653,6 +653,7 @@ The following options need to be configured: CONFIG_CMD_ITEST Integer/string test of 2 values CONFIG_CMD_JFFS2 * JFFS2 Support CONFIG_CMD_KGDB * kgdb + CONFIG_CMD_LDRINFO ldrinfo (display Blackfin loader) CONFIG_CMD_LOADB loadb CONFIG_CMD_LOADS loads CONFIG_CMD_MD5SUM print md5 message digest diff --git a/common/Makefile b/common/Makefile index 048df0c..4555716 100644 --- a/common/Makefile +++ b/common/Makefile @@ -105,6 +105,7 @@ COBJS-$(CONFIG_CMD_IRQ) += cmd_irq.o COBJS-$(CONFIG_CMD_ITEST) += cmd_itest.o COBJS-$(CONFIG_CMD_JFFS2) += cmd_jffs2.o COBJS-$(CONFIG_CMD_CRAMFS) += cmd_cramfs.o +COBJS-$(CONFIG_CMD_LDRINFO) += cmd_ldrinfo.o COBJS-$(CONFIG_CMD_LICENSE) += cmd_license.o COBJS-y += cmd_load.o COBJS-$(CONFIG_LOGBUFFER) += cmd_log.o diff --git a/common/cmd_ldrinfo.c b/common/cmd_ldrinfo.c new file mode 100644 index 0000000..2aa56bd --- /dev/null +++ b/common/cmd_ldrinfo.c @@ -0,0 +1,192 @@ +/* + * U-boot - ldrinfo + * + * Copyright (c) 2010 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> + +static uint32_t ldrinfo_header(const void *addr) +{ + uint32_t skip = 0; + +#if defined(__ADSPBF561__) + /* BF56x has a 4 byte global header */ + uint32_t header, sign; + static const char * const spi_speed[] = { + "500K", "1M", "2M", "??", + }; + + memcpy(&header, addr, sizeof(header)); + + sign = (header & GFLAG_56X_SIGN_MASK) >> GFLAG_56X_SIGN_SHIFT; + printf("Header: %08X ( %s-bit-flash wait:%i hold:%i spi:%s %s)\n", + header, + (header & GFLAG_56X_16BIT_FLASH) ? "16" : "8", + (header & GFLAG_56X_WAIT_MASK) >> GFLAG_56X_WAIT_SHIFT, + (header & GFLAG_56X_HOLD_MASK) >> GFLAG_56X_HOLD_SHIFT, + spi_speed[(header & GFLAG_56X_SPI_MASK) >> GFLAG_56X_SPI_SHIFT], + sign == GFLAG_56X_SIGN_MAGIC ? "" : "!!hdrsign!! "); + + skip = 4; +#endif + + /* |Block @ 12345678: 12345678 12345678 12345678 12345678 | */ +#if defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \ + defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__) || \ + defined(__ADSPBF538__) || defined(__ADSPBF539__) || defined(__ADSPBF561__) + printf(" Address Count Flags\n"); +#else + printf(" BCode Address Count Argument\n"); +#endif + + return skip; +} + +struct ldr_flag { + uint16_t flag; + const char *desc; +}; + +static uint32_t ldrinfo_block(const void *base_addr) +{ + uint32_t count; + + printf("Block @ %08X: ", (uint32_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, pval; + uint16_t flags; + int i; + static const struct ldr_flag ldr_flags[] = { + { BFLAG_53X_ZEROFILL, "zerofill" }, + { BFLAG_53X_RESVECT, "resvect" }, + { BFLAG_53X_INIT, "init" }, + { BFLAG_53X_IGNORE, "ignore" }, + { BFLAG_53X_COMPRESSED, "compressed"}, + { BFLAG_53X_FINAL, "final" }, + }; + + memcpy(&addr, base_addr, sizeof(addr)); + memcpy(&count, base_addr+4, sizeof(count)); + memcpy(&flags, base_addr+8, sizeof(flags)); + + printf("%08X %08X %04X ( ", addr, count, flags); + + for (i = 0; i < ARRAY_SIZE(ldr_flags); ++i) + if (flags & ldr_flags[i].flag) + printf("%s ", ldr_flags[i].desc); + + pval = (flags & BFLAG_53X_PFLAG_MASK) >> BFLAG_53X_PFLAG_SHIFT; + if (pval) + printf("gpio%i ", pval); + pval = (flags & BFLAG_53X_PPORT_MASK) >> BFLAG_53X_PPORT_SHIFT; + if (pval) + printf("port%c ", 'e' + pval); + + if (flags & BFLAG_53X_ZEROFILL) + count = 0; + if (flags & BFLAG_53X_FINAL) + count = 0; + else + count += sizeof(addr) + sizeof(count) + sizeof(flags); + +#else + + const uint8_t *raw8 = base_addr; + uint32_t bcode, addr, arg, sign, chk; + int i; + static const struct ldr_flag ldr_flags[] = { + { BFLAG_SAFE, "safe" }, + { BFLAG_AUX, "aux" }, + { BFLAG_FILL, "fill" }, + { BFLAG_QUICKBOOT, "quickboot" }, + { BFLAG_CALLBACK, "callback" }, + { BFLAG_INIT, "init" }, + { BFLAG_IGNORE, "ignore" }, + { BFLAG_INDIRECT, "indirect" }, + { BFLAG_FIRST, "first" }, + { BFLAG_FINAL, "final" }, + }; + + memcpy(&bcode, base_addr, sizeof(bcode)); + memcpy(&addr, base_addr+4, sizeof(addr)); + memcpy(&count, base_addr+8, sizeof(count)); + memcpy(&arg, base_addr+12, sizeof(arg)); + + printf("%08X %08X %08X %08X ( ", bcode, addr, count, arg); + + if (addr % 4) + printf("!!addralgn!! "); + if (count % 4) + printf("!!cntalgn!! "); + + sign = (bcode & BFLAG_HDRSIGN_MASK) >> BFLAG_HDRSIGN_SHIFT; + if (sign != BFLAG_HDRSIGN_MAGIC) + printf("!!hdrsign!! "); + + chk = 0; + for (i = 0; i < 16; ++i) + chk ^= raw8[i]; + if (chk) + printf("!!hdrchk!! "); + + printf("dma:%i ", bcode & BFLAG_DMACODE_MASK); + + for (i = 0; i < ARRAY_SIZE(ldr_flags); ++i) + if (bcode & ldr_flags[i].flag) + printf("%s ", ldr_flags[i].desc); + + if (bcode & BFLAG_FILL) + count = 0; + if (bcode & BFLAG_FINAL) + count = 0; + else + count += sizeof(bcode) + sizeof(addr) + sizeof(count) + sizeof(arg); + +#endif + + printf(")\n"); + + return count; +} + +static int do_ldrinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + const void *addr; + uint32_t skip; + + /* Get the address */ + if (argc < 2) + addr = (void *)load_addr; + else + addr = (void *)simple_strtoul(argv[1], NULL, 16); + + /* Walk the LDR */ + addr += ldrinfo_header(addr); + do { + skip = ldrinfo_block(addr); + addr += skip; + } while (skip); + + return 0; +} + +U_BOOT_CMD( + ldrinfo, 2, 0, do_ldrinfo, + "validate ldr image in memory", + "[addr]\n" +);