This reverts commit f86caab058ff062ce72b24cd1ab9ec1253cc1352.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
tools/mkeficapsule.c | 229 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 222 insertions(+), 7 deletions(-)
diff --git a/tools/mkeficapsule.c b/tools/mkeficapsule.c index 4995ba4e0c2..de0a6289888 100644 --- a/tools/mkeficapsule.c +++ b/tools/mkeficapsule.c @@ -4,17 +4,22 @@ * Author: AKASHI Takahiro */
+#include <errno.h> #include <getopt.h> #include <malloc.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> #include <linux/types.h>
+#include <sys/mman.h> #include <sys/stat.h> #include <sys/types.h>
+#include "fdt_host.h" + typedef __u8 u8; typedef __u16 u16; typedef __u32 u32; @@ -24,6 +29,9 @@ typedef __s32 s32;
#define aligned_u64 __aligned_u64
+#define SIGNATURE_NODENAME "signature" +#define OVERLAY_NODENAME "__overlay__" + #ifndef __packed #define __packed __attribute__((packed)) #endif @@ -44,6 +52,9 @@ static struct option options[] = { {"raw", required_argument, NULL, 'r'}, {"index", required_argument, NULL, 'i'}, {"instance", required_argument, NULL, 'I'}, + {"dtb", required_argument, NULL, 'D'}, + {"public key", required_argument, NULL, 'K'}, + {"overlay", no_argument, NULL, 'O'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0}, }; @@ -57,10 +68,187 @@ static void print_usage(void) "\t-r, --raw <raw image> new raw image file\n" "\t-i, --index <index> update image index\n" "\t-I, --instance <instance> update hardware instance\n" + "\t-K, --public-key <key file> public key esl file\n" + "\t-D, --dtb <dtb file> dtb file\n" + "\t-O, --overlay the dtb file is an overlay\n" "\t-h, --help print a help message\n", tool_name); }
+static int fdt_add_pub_key_data(void *sptr, void *dptr, size_t key_size, + bool overlay) +{ + int parent; + int ov_node; + int frag_node; + int ret = 0; + + if (overlay) { + /* + * The signature would be stored in the + * first fragment node of the overlay + */ + frag_node = fdt_first_subnode(dptr, 0); + if (frag_node == -FDT_ERR_NOTFOUND) { + fprintf(stderr, + "Couldn't find the fragment node: %s\n", + fdt_strerror(frag_node)); + goto done; + } + + ov_node = fdt_subnode_offset(dptr, frag_node, OVERLAY_NODENAME); + if (ov_node == -FDT_ERR_NOTFOUND) { + fprintf(stderr, + "Couldn't find the __overlay__ node: %s\n", + fdt_strerror(ov_node)); + goto done; + } + } else { + ov_node = 0; + } + + parent = fdt_subnode_offset(dptr, ov_node, SIGNATURE_NODENAME); + if (parent == -FDT_ERR_NOTFOUND) { + parent = fdt_add_subnode(dptr, ov_node, SIGNATURE_NODENAME); + if (parent < 0) { + ret = parent; + if (ret != -FDT_ERR_NOSPACE) { + fprintf(stderr, + "Couldn't create signature node: %s\n", + fdt_strerror(parent)); + } + } + } + if (ret) + goto done; + + /* Write the key to the FDT node */ + ret = fdt_setprop(dptr, parent, "capsule-key", + sptr, key_size); + +done: + if (ret) + ret = ret == -FDT_ERR_NOSPACE ? -ENOSPC : -EIO; + + return ret; +} + +static int add_public_key(const char *pkey_file, const char *dtb_file, + bool overlay) +{ + int ret; + int srcfd = -1; + int destfd = -1; + void *sptr = NULL; + void *dptr = NULL; + off_t src_size; + struct stat pub_key; + struct stat dtb; + + /* Find out the size of the public key */ + srcfd = open(pkey_file, O_RDONLY); + if (srcfd == -1) { + fprintf(stderr, "%s: Can't open %s: %s\n", + __func__, pkey_file, strerror(errno)); + ret = -1; + goto err; + } + + ret = fstat(srcfd, &pub_key); + if (ret == -1) { + fprintf(stderr, "%s: Can't stat %s: %s\n", + __func__, pkey_file, strerror(errno)); + ret = -1; + goto err; + } + + src_size = pub_key.st_size; + + /* mmap the public key esl file */ + sptr = mmap(0, src_size, PROT_READ, MAP_SHARED, srcfd, 0); + if (sptr == MAP_FAILED) { + fprintf(stderr, "%s: Failed to mmap %s:%s\n", + __func__, pkey_file, strerror(errno)); + ret = -1; + goto err; + } + + /* Open the dest FDT */ + destfd = open(dtb_file, O_RDWR); + if (destfd == -1) { + fprintf(stderr, "%s: Can't open %s: %s\n", + __func__, dtb_file, strerror(errno)); + ret = -1; + goto err; + } + + ret = fstat(destfd, &dtb); + if (ret == -1) { + fprintf(stderr, "%s: Can't stat %s: %s\n", + __func__, dtb_file, strerror(errno)); + goto err; + } + + dtb.st_size += src_size + 0x30; + if (ftruncate(destfd, dtb.st_size)) { + fprintf(stderr, "%s: Can't expand %s: %s\n", + __func__, dtb_file, strerror(errno)); + ret = -1; + goto err; + } + + errno = 0; + /* mmap the dtb file */ + dptr = mmap(0, dtb.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, + destfd, 0); + if (dptr == MAP_FAILED) { + fprintf(stderr, "%s: Failed to mmap %s:%s\n", + __func__, dtb_file, strerror(errno)); + ret = -1; + goto err; + } + + if (fdt_check_header(dptr)) { + fprintf(stderr, "%s: Invalid FDT header\n", __func__); + ret = -1; + goto err; + } + + ret = fdt_open_into(dptr, dptr, dtb.st_size); + if (ret) { + fprintf(stderr, "%s: Cannot expand FDT: %s\n", + __func__, fdt_strerror(ret)); + ret = -1; + goto err; + } + + /* Copy the esl file to the expanded FDT */ + ret = fdt_add_pub_key_data(sptr, dptr, src_size, overlay); + if (ret < 0) { + fprintf(stderr, "%s: Unable to add public key to the FDT\n", + __func__); + ret = -1; + goto err; + } + + ret = 0; + +err: + if (sptr) + munmap(sptr, src_size); + + if (dptr) + munmap(dptr, dtb.st_size); + + if (srcfd != -1) + close(srcfd); + + if (destfd != -1) + close(destfd); + + return ret; +} + static int create_fwbin(char *path, char *bin, efi_guid_t *guid, unsigned long index, unsigned long instance) { @@ -178,16 +366,22 @@ err_1: int main(int argc, char **argv) { char *file; + char *pkey_file; + char *dtb_file; efi_guid_t *guid; unsigned long index, instance; int c, idx; + int ret; + bool overlay = false;
file = NULL; + pkey_file = NULL; + dtb_file = NULL; guid = NULL; index = 0; instance = 0; for (;;) { - c = getopt_long(argc, argv, "f:r:i:I:v:h", options, &idx); + c = getopt_long(argc, argv, "f:r:i:I:v:D:K:Oh", options, &idx); if (c == -1) break;
@@ -214,22 +408,43 @@ int main(int argc, char **argv) case 'I': instance = strtoul(optarg, NULL, 0); break; + case 'K': + if (pkey_file) { + printf("Public Key already specified\n"); + return -1; + } + pkey_file = optarg; + break; + case 'D': + if (dtb_file) { + printf("DTB file already specified\n"); + return -1; + } + dtb_file = optarg; + break; + case 'O': + overlay = true; + break; case 'h': print_usage(); return 0; } }
- /* need an output file */ - if (argc != optind + 1) { + /* need a fit image file or raw image file */ + if (!file && !pkey_file && !dtb_file) { print_usage(); exit(EXIT_FAILURE); }
- /* need a fit image file or raw image file */ - if (!file) { - print_usage(); - exit(EXIT_SUCCESS); + if (pkey_file && dtb_file) { + ret = add_public_key(pkey_file, dtb_file, overlay); + if (ret == -1) { + printf("Adding public key to the dtb failed\n"); + exit(EXIT_FAILURE); + } else { + exit(EXIT_SUCCESS); + } }
if (create_fwbin(argv[optind], file, guid, index, instance)