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tools/atmelimage.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * (C) Copyright 2014 |
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* Andreas Bießmann <andreas@biessmann.org> |
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*/ #include "imagetool.h" #include "mkimage.h" #include <image.h> #define pr_err(fmt, args...) fprintf(stderr, "atmelimage Error: " fmt, ##args) static int atmel_check_image_type(uint8_t type) { if (type == IH_TYPE_ATMELIMAGE) return EXIT_SUCCESS; else return EXIT_FAILURE; } static uint32_t nand_pmecc_header[52]; /* * A helper struct for parsing the mkimage -n parameter * * Keep in same order as the configs array! */ static struct pmecc_config { int use_pmecc; int sector_per_page; int spare_size; int ecc_bits; int sector_size; int ecc_offset; } pmecc; /* * Strings used for configure the PMECC header via -n mkimage switch * * We estimate a coma separated list of key=value pairs. The mkimage -n * parameter argument should not contain any whitespace. * * Keep in same order as struct pmecc_config! */ static const char * const configs[] = { "usePmecc", "sectorPerPage", "spareSize", "eccBits", "sectorSize", "eccOffset" }; static int atmel_find_pmecc_parameter_in_token(const char *token) { size_t pos; char *param; debug("token: '%s' ", token); for (pos = 0; pos < ARRAY_SIZE(configs); pos++) { if (strncmp(token, configs[pos], strlen(configs[pos])) == 0) { param = strstr(token, "="); if (!param) goto err; param++; debug("\t%s parameter: '%s' ", configs[pos], param); switch (pos) { case 0: pmecc.use_pmecc = strtol(param, NULL, 10); return EXIT_SUCCESS; case 1: pmecc.sector_per_page = strtol(param, NULL, 10); return EXIT_SUCCESS; case 2: pmecc.spare_size = strtol(param, NULL, 10); return EXIT_SUCCESS; case 3: pmecc.ecc_bits = strtol(param, NULL, 10); return EXIT_SUCCESS; case 4: pmecc.sector_size = strtol(param, NULL, 10); return EXIT_SUCCESS; case 5: pmecc.ecc_offset = strtol(param, NULL, 10); return EXIT_SUCCESS; } } } err: pr_err("Could not find parameter in token '%s' ", token); return EXIT_FAILURE; } static int atmel_parse_pmecc_params(char *txt) { char *token; token = strtok(txt, ","); while (token != NULL) { if (atmel_find_pmecc_parameter_in_token(token)) return EXIT_FAILURE; token = strtok(NULL, ","); } return EXIT_SUCCESS; } static int atmel_verify_header(unsigned char *ptr, int image_size, struct image_tool_params *params) { uint32_t *ints = (uint32_t *)ptr; size_t pos; size_t size = image_size; /* check if we have an PMECC header attached */ for (pos = 0; pos < ARRAY_SIZE(nand_pmecc_header); pos++) if (ints[pos] >> 28 != 0xC) break; if (pos == ARRAY_SIZE(nand_pmecc_header)) { ints += ARRAY_SIZE(nand_pmecc_header); size -= sizeof(nand_pmecc_header); } /* check the seven interrupt vectors of binary */ for (pos = 0; pos < 7; pos++) { |
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debug("atmelimage: interrupt vector #%zu is 0x%08X ", pos+1, |
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ints[pos]); /* * all vectors except the 6'th one must contain valid * LDR or B Opcode */ if (pos == 5) /* 6'th vector has image size set, check later */ continue; if ((ints[pos] & 0xff000000) == 0xea000000) /* valid B Opcode */ continue; if ((ints[pos] & 0xfffff000) == 0xe59ff000) /* valid LDR (I=0, P=1, U=1, B=0, W=0, L=1) */ continue; /* ouch, one of the checks has missed ... */ return 1; } return ints[5] != cpu_to_le32(size); } static void atmel_print_pmecc_header(const uint32_t word) { int val; printf("\t\tPMECC header "); printf("\t\t==================== "); val = (word >> 18) & 0x1ff; printf("\t\teccOffset: %9i ", val); val = (((word >> 16) & 0x3) == 0) ? 512 : 1024; printf("\t\tsectorSize: %8i ", val); if (((word >> 13) & 0x7) <= 2) val = (2 << ((word >> 13) & 0x7)); else val = (12 << (((word >> 13) & 0x7) - 3)); printf("\t\teccBitReq: %9i ", val); val = (word >> 4) & 0x1ff; printf("\t\tspareSize: %9i ", val); val = (1 << ((word >> 1) & 0x3)); printf("\t\tnbSectorPerPage: %3i ", val); printf("\t\tusePmecc: %10i ", word & 0x1); printf("\t\t==================== "); } static void atmel_print_header(const void *ptr) { uint32_t *ints = (uint32_t *)ptr; size_t pos; /* check if we have an PMECC header attached */ for (pos = 0; pos < ARRAY_SIZE(nand_pmecc_header); pos++) if (ints[pos] >> 28 != 0xC) break; if (pos == ARRAY_SIZE(nand_pmecc_header)) { printf("Image Type:\tATMEL ROM-Boot Image with PMECC Header "); atmel_print_pmecc_header(ints[0]); pos += 5; } else { printf("Image Type:\tATMEL ROM-Boot Image without PMECC Header "); pos = 5; } printf("\t\t6'th vector has %u set ", le32_to_cpu(ints[pos])); } static void atmel_set_header(void *ptr, struct stat *sbuf, int ifd, struct image_tool_params *params) { /* just save the image size into 6'th interrupt vector */ uint32_t *ints = (uint32_t *)ptr; size_t cnt; size_t pos = 5; size_t size = sbuf->st_size; for (cnt = 0; cnt < ARRAY_SIZE(nand_pmecc_header); cnt++) if (ints[cnt] >> 28 != 0xC) break; if (cnt == ARRAY_SIZE(nand_pmecc_header)) { pos += ARRAY_SIZE(nand_pmecc_header); size -= sizeof(nand_pmecc_header); } ints[pos] = cpu_to_le32(size); } static int atmel_check_params(struct image_tool_params *params) { if (strlen(params->imagename) > 0) if (atmel_parse_pmecc_params(params->imagename)) return EXIT_FAILURE; return !(!params->eflag && !params->fflag && !params->xflag && ((params->dflag && !params->lflag) || (params->lflag && !params->dflag))); } static int atmel_vrec_header(struct image_tool_params *params, struct image_type_params *tparams) { uint32_t tmp; size_t pos; if (strlen(params->imagename) == 0) return EXIT_SUCCESS; tmp = 0xC << 28; tmp |= (pmecc.ecc_offset & 0x1ff) << 18; switch (pmecc.sector_size) { case 512: tmp |= 0 << 16; break; case 1024: tmp |= 1 << 16; break; default: pr_err("Wrong sectorSize (%i) for PMECC header ", pmecc.sector_size); return EXIT_FAILURE; } switch (pmecc.ecc_bits) { case 2: tmp |= 0 << 13; break; case 4: tmp |= 1 << 13; break; case 8: tmp |= 2 << 13; break; case 12: tmp |= 3 << 13; break; case 24: tmp |= 4 << 13; break; default: pr_err("Wrong eccBits (%i) for PMECC header ", pmecc.ecc_bits); return EXIT_FAILURE; } tmp |= (pmecc.spare_size & 0x1ff) << 4; switch (pmecc.sector_per_page) { case 1: tmp |= 0 << 1; break; case 2: tmp |= 1 << 1; break; case 4: tmp |= 2 << 1; break; case 8: tmp |= 3 << 1; break; default: pr_err("Wrong sectorPerPage (%i) for PMECC header ", pmecc.sector_per_page); return EXIT_FAILURE; } if (pmecc.use_pmecc) tmp |= 1; for (pos = 0; pos < ARRAY_SIZE(nand_pmecc_header); pos++) nand_pmecc_header[pos] = tmp; debug("PMECC header filled 52 times with 0x%08X ", tmp); tparams->header_size = sizeof(nand_pmecc_header); tparams->hdr = nand_pmecc_header; return EXIT_SUCCESS; } |
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U_BOOT_IMAGE_TYPE( atmelimage, "ATMEL ROM-Boot Image support", 0, NULL, atmel_check_params, atmel_verify_header, atmel_print_header, atmel_set_header, NULL, atmel_check_image_type, NULL, atmel_vrec_header ); |