diff options
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/image.h | 24 | ||||
| -rw-r--r-- | src/soc/amd/common/block/pi/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/amd/common/block/pi/image.c | 60 |
3 files changed, 86 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/image.h b/src/soc/amd/common/block/include/amdblocks/image.h new file mode 100644 index 0000000000..ccfcac5a5d --- /dev/null +++ b/src/soc/amd/common/block/include/amdblocks/image.h @@ -0,0 +1,24 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 Silverback, ltd. + * + * 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; version 2 of the License. + * + * 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. + */ + +#ifndef __AMD_IMAGE_H__ +#define __AMD_IMAGE_H__ + +#include <stdint.h> + +void *amd_find_image(const void *start_address, const void *end_address, + uint32_t alignment, const char name[8]); + +#endif /* __AMD_IMAGE_H__ */ diff --git a/src/soc/amd/common/block/pi/Makefile.inc b/src/soc/amd/common/block/pi/Makefile.inc index 65386f2972..ba0812343b 100644 --- a/src/soc/amd/common/block/pi/Makefile.inc +++ b/src/soc/amd/common/block/pi/Makefile.inc @@ -3,11 +3,13 @@ ifeq ($(CONFIG_SOC_AMD_COMMON_BLOCK_PI),y) romstage-y += agesawrapper.c romstage-y += def_callouts.c romstage-y += heapmanager.c +romstage-y += image.c ramstage-y += agesawrapper.c ramstage-y += amd_late_init.c ramstage-$(CONFIG_HAVE_ACPI_RESUME) += amd_resume_final.c ramstage-y += def_callouts.c ramstage-y += heapmanager.c +ramstage-y += image.c endif diff --git a/src/soc/amd/common/block/pi/image.c b/src/soc/amd/common/block/pi/image.c new file mode 100644 index 0000000000..dca1963666 --- /dev/null +++ b/src/soc/amd/common/block/pi/image.c @@ -0,0 +1,60 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 Silverback, ltd. + * + * 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; version 2 of the License. + * + * 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. + */ + +#include <agesa_headers.h> +#include <amdblocks/image.h> + +/* Check if the image has the desired module. */ +static bool validate_image(void *module_chain, const char module_signature[8]) +{ + AMD_MODULE_HEADER *mod_ptr = (AMD_MODULE_HEADER *)module_chain; + uint64_t signature = *(uint64_t *)module_signature; + char *checking_str; + + while ((mod_ptr != NULL) && + (MODULE_SIGNATURE == *(uint32_t *)&mod_ptr->ModuleHeaderSignature)) { + checking_str = (char *)&mod_ptr->ModuleIdentifier; + if (signature == *(uint64_t *)checking_str) + return true; + mod_ptr = (AMD_MODULE_HEADER *)mod_ptr->NextBlock; + } + return false; +} + +/* + * Find an image that has the desired module. The image is aligned within + * a given range. + */ +void *amd_find_image(const void *start_address, const void *end_address, + uint32_t alignment, const char name[8]) +{ + uint8_t *current_ptr = (uint8_t *)start_address; + uint8_t *start = (uint8_t *)start_address; + uint8_t *end = (uint8_t *)end_address; + AMD_IMAGE_HEADER *image_ptr; + + while ((current_ptr >= start) && (current_ptr < end)) { + if (IMAGE_SIGNATURE == *((uint32_t *)current_ptr)) { + image_ptr = (AMD_IMAGE_HEADER *) current_ptr; + + /* Check if the image has the desired module */ + if (validate_image((void *)image_ptr->ModuleInfoOffset, + name)) + return current_ptr; + } + current_ptr += alignment; + } + return NULL; +} |