This adds a tool for generating "RKNS" type booting image for newer Rockchip SoCs. This image format is supported starting at least with RK3568. Older image types are not (yet) supported. Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> Link: https://lore.barebox.org/20210615141641.31577-5-s.hauer@xxxxxxxxxxxxxx Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> --- scripts/Makefile | 3 + scripts/rkimage.c | 260 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 263 insertions(+) create mode 100644 scripts/rkimage.c diff --git a/scripts/Makefile b/scripts/Makefile index 2d322fd1c9..eb0f5c5805 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -25,6 +25,9 @@ hostprogs-always-$(CONFIG_ARCH_MXS) += mxsimage mxsboot hostprogs-always-$(CONFIG_ARCH_LAYERSCAPE) += pblimage hostprogs-always-$(CONFIG_ARCH_STM32MP) += stm32image hostprogs-always-$(CONFIG_RISCV) += prelink-riscv +hostprogs-always-$(CONFIG_ARCH_ROCKCHIP) += rkimage +HOSTCFLAGS_rkimage = `pkg-config --cflags openssl` +HOSTLDLIBS_rkimage = `pkg-config --libs openssl` KBUILD_HOSTCFLAGS += -I$(srctree)/scripts/include/ HOSTLDLIBS_mxsimage = `pkg-config --libs openssl` HOSTCFLAGS_omap3-usb-loader.o = `pkg-config --cflags libusb-1.0` diff --git a/scripts/rkimage.c b/scripts/rkimage.c new file mode 100644 index 0000000000..dde9724886 --- /dev/null +++ b/scripts/rkimage.c @@ -0,0 +1,260 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <unistd.h> +#include <getopt.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <time.h> +#include <openssl/sha.h> +#include <errno.h> +#include <stdbool.h> + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0])) +#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) + +static void sha256(const void *buf, int len, void *out) +{ + SHA256_CTX sha256; + + SHA256_Init(&sha256); + SHA256_Update(&sha256, buf, len); + SHA256_Final(out, &sha256); +} + +static void sha512(const void *buf, int len, void *out) +{ + SHA512_CTX sha512; + + SHA512_Init(&sha512); + SHA512_Update(&sha512, buf, len); + SHA512_Final(out, &sha512); +} + +#define NEWIDB_MAGIC 0x534e4b52 /* 'RKNS' */ + +struct newidb_entry { + uint32_t sector; + uint32_t unknown_ffffffff; + uint32_t unknown1; + uint32_t image_number; + unsigned char unknown2[8]; + unsigned char hash[64]; +}; + +struct newidb { + uint32_t magic; + unsigned char unknown1[4]; + uint32_t n_files; + uint32_t hashtype; + unsigned char unknown2[8]; + unsigned char unknown3[8]; + unsigned char unknown4[88]; + struct newidb_entry entries[4]; + unsigned char unknown5[40]; + unsigned char unknown6[512]; + unsigned char unknown7[16]; + unsigned char unknown8[32]; + unsigned char unknown9[464]; + unsigned char hash[512]; +}; + +#define SECTOR_SIZE 512 +#define PAGE_SIZE 2048 + +typedef enum { + HASH_TYPE_SHA256 = 1, + HASH_TYPE_SHA512 = 2, +} hash_type_t; + +struct rkcode { + const char *path; + size_t size; + void *buf; +}; + +static int n_code; +struct rkcode *code; + +static int create_newidb(struct newidb *idb) +{ + hash_type_t hash_type = HASH_TYPE_SHA256; + bool keep_cert = false; + int image_offset; + int i; + unsigned char *idbu8 = (void *)idb; + + idb->magic = NEWIDB_MAGIC; + idb->n_files = (n_code << 16) | (1 << 7) | (1 << 8); + + if (hash_type == HASH_TYPE_SHA256) + idb->hashtype = (1 << 0); + else if (hash_type == HASH_TYPE_SHA512) + idb->hashtype = (1 << 1); + + if (!keep_cert) + image_offset = 4; + else + image_offset = 8; + + for (i = 0; i < n_code; i++) { + struct newidb_entry *entry = &idb->entries[i]; + struct rkcode *c = &code[i]; + unsigned int image_sector; + + image_sector = c->size / SECTOR_SIZE; + + entry->sector = (image_sector << 16) + image_offset; + entry->unknown_ffffffff = 0xffffffff; + entry->image_number = i + 1; + + if (hash_type == HASH_TYPE_SHA256) + sha256(c->buf, c->size, entry->hash); /* File size padded to sector size */ + else if (hash_type == HASH_TYPE_SHA512) + sha512(c->buf, c->size, entry->hash); + + image_offset += image_sector; + + } + + if (hash_type == HASH_TYPE_SHA256) + sha256(idbu8, 1535, idbu8 + 1536); + else if (hash_type == HASH_TYPE_SHA512) + sha512(idbu8, 1535, idbu8 + 1536); + + return 0; +} + +struct option cbootcmd[] = { + {"help", 0, NULL, 'h'}, + {"o", 1, NULL, 'o'}, + {0, 0, 0, 0}, +}; + +static void usage(const char *prgname) +{ + printf( +"Usage: %s [OPTIONS] <FILES>\n" +"\n" +"Generate a Rockchip boot image from <FILES>\n" +"This tool is suitable for SoCs beginning with rk3568. Older SoCs\n" +"have a different image format.\n" +"\n" +"Options:\n" +" -o <file> Output image to <file>\n" +" -h This help\n", + prgname); +} + +static int read_full(int fd, void *buf, size_t size) +{ + size_t insize = size; + int now; + int total = 0; + + while (size) { + now = read(fd, buf, size); + if (now == 0) + return total; + if (now < 0) + return now; + total += now; + size -= now; + buf += now; + } + + return insize; +} + +static int write_full(int fd, void *buf, size_t size) +{ + size_t insize = size; + int now; + + while (size) { + now = write(fd, buf, size); + if (now <= 0) + return now; + size -= now; + buf += now; + } + + return insize; +} + +int main(int argc, char *argv[]) +{ + int opt, i, fd; + const char *outfile = NULL; + struct newidb idb = {}; + + while ((opt = getopt_long(argc, argv, "ho:", cbootcmd, NULL)) > 0) { + switch (opt) { + case 'o': + outfile = optarg; + break; + case 'h': + usage(argv[0]); + exit(0); + } + } + + n_code = argc - optind; + if (!n_code) { + usage(argv[0]); + exit(1); + } + + code = calloc(n_code, sizeof(*code)); + if (!code) + exit(1); + + for (i = 0; i < n_code; i++) { + struct stat s; + int fd, ret; + struct rkcode *c = &code[i]; + const char *path = argv[i + optind]; + + fd = open(path, O_RDONLY); + if (fd < 0) { + fprintf(stderr, "Cannot open %s: %s\n", path, strerror(errno)); + exit(1); + } + + ret = fstat(fd, &s); + if (ret) + exit(1); + + c->path = path; + c->size = ALIGN(s.st_size, PAGE_SIZE); + c->buf = calloc(c->size, 1); + if (!c->buf) + exit(1); + + read_full(fd, c->buf, s.st_size); + close(fd); + } + + create_newidb(&idb); + + fd = creat(outfile, 0644); + if (fd < 0) { + fprintf(stderr, "Cannot open %s: %s\n", outfile, strerror(errno)); + exit(1); + } + + write_full(fd, &idb, sizeof(idb)); + + for (i = 0; i < n_code; i++) { + struct rkcode *c = &code[i]; + + write_full(fd, c->buf, c->size); + } + + close(fd); + + return 0; +} -- 2.29.2 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
