#include "mkimage.h"
#include "rkcommon.h"
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
enum {
RK_SIGNATURE = 0x0ff0aa55,
};
uint8_t reserved2[2];
};
+/**
+ * struct header1_info
+ */
+struct header1_info {
+ uint32_t magic;
+};
+
+/**
+ * struct spl_info - spl info for each chip
+ *
+ * @imagename: Image name(passed by "mkimage -n")
+ * @spl_hdr: Boot ROM requires a 4-bytes spl header
+ * @spl_size: Spl size(include extra 4-bytes spl header)
+ * @spl_rc4: RC4 encode the SPL binary (same key as header)
+ * @spl_boot0: A new-style (ARM_SOC_BOOT0_HOOK) image that should
+ * have the boot magic (e.g. 'RK33') written to its first
+ * word.
+ */
+
+struct spl_info {
+ const char *imagename;
+ const char *spl_hdr;
+ const uint32_t spl_size;
+ const bool spl_rc4;
+ const bool spl_boot0;
+};
+
+static struct spl_info spl_infos[] = {
+ { "rk3036", "RK30", 0x1000, false, false },
+ { "rk3188", "RK31", 0x8000 - 0x800, true, false },
+ { "rk3288", "RK32", 0x8000, false, false },
+ { "rk3328", "RK32", 0x8000 - 0x1000, false, false },
+ { "rk3399", "RK33", 0x20000, false, true },
+};
+
static unsigned char rc4_key[16] = {
124, 78, 3, 4, 85, 5, 9, 7,
45, 44, 123, 56, 23, 13, 23, 17
};
-int rkcommon_set_header(void *buf, uint file_size)
+static struct spl_info *rkcommon_get_spl_info(char *imagename)
{
- struct header0_info *hdr;
+ int i;
- if (file_size > CONFIG_ROCKCHIP_MAX_SPL_SIZE)
- return -ENOSPC;
+ if (!imagename)
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
+ if (!strncmp(imagename, spl_infos[i].imagename, 6))
+ return spl_infos + i;
+
+ return NULL;
+}
- memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
- hdr = (struct header0_info *)buf;
+int rkcommon_check_params(struct image_tool_params *params)
+{
+ int i;
+
+ if (rkcommon_get_spl_info(params->imagename) != NULL)
+ return EXIT_SUCCESS;
+
+ /*
+ * If this is a operation (list or extract), the don't require
+ * imagename to be set.
+ */
+ if (params->lflag || params->iflag)
+ return EXIT_SUCCESS;
+
+ fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
+ params->imagename ? params->imagename : "NULL");
+
+ fprintf(stderr, "Available imagename:");
+ for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
+ fprintf(stderr, "\t%s", spl_infos[i].imagename);
+ fprintf(stderr, "\n");
+
+ return EXIT_FAILURE;
+}
+
+const char *rkcommon_get_spl_hdr(struct image_tool_params *params)
+{
+ struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+ /*
+ * info would not be NULL, because of we checked params before.
+ */
+ return info->spl_hdr;
+}
+
+
+int rkcommon_get_spl_size(struct image_tool_params *params)
+{
+ struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+ /*
+ * info would not be NULL, because of we checked params before.
+ */
+ return info->spl_size;
+}
+
+bool rkcommon_need_rc4_spl(struct image_tool_params *params)
+{
+ struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+ /*
+ * info would not be NULL, because of we checked params before.
+ */
+ return info->spl_rc4;
+}
+
+bool rkcommon_spl_is_boot0(struct image_tool_params *params)
+{
+ struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+ /*
+ * info would not be NULL, because of we checked params before.
+ */
+ return info->spl_boot0;
+}
+
+static void rkcommon_set_header0(void *buf, uint file_size,
+ struct image_tool_params *params)
+{
+ struct header0_info *hdr = buf;
+
+ memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
hdr->signature = RK_SIGNATURE;
- hdr->disable_rc4 = 1;
+ hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
hdr->init_offset = RK_INIT_OFFSET;
- hdr->init_size = (file_size + RK_BLK_SIZE - 1) / RK_BLK_SIZE;
- hdr->init_size = (hdr->init_size + 3) & ~3;
- hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
+ hdr->init_size = DIV_ROUND_UP(file_size, RK_BLK_SIZE);
+ /*
+ * The init_size has to be a multiple of 4 blocks (i.e. of 2K)
+ * or the BootROM will not boot the image.
+ *
+ * Note: To verify that this is not a legacy constraint, we
+ * rechecked this against the RK3399 BootROM.
+ */
+ hdr->init_size = ROUND(hdr->init_size, 4);
+ /*
+ * The images we create do not contain the stage following the SPL as
+ * part of the SPL image, so the init_boot_size (which might have been
+ * read by Rockchip's miniloder) should be the same as the init_size.
+ */
+ hdr->init_boot_size = hdr->init_size;
rc4_encode(buf, RK_BLK_SIZE, rc4_key);
+}
+
+int rkcommon_set_header(void *buf, uint file_size,
+ struct image_tool_params *params)
+{
+ struct header1_info *hdr = buf + RK_SPL_HDR_START;
+
+ if (file_size > rkcommon_get_spl_size(params))
+ return -ENOSPC;
+
+ rkcommon_set_header0(buf, file_size, params);
+
+ /* Set up the SPL name */
+ memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);
+
+ if (rkcommon_need_rc4_spl(params))
+ rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START,
+ params->file_size - RK_SPL_HDR_START);
return 0;
}
+
+void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
+{
+ unsigned int remaining = size;
+
+ while (remaining > 0) {
+ int step = (remaining > RK_BLK_SIZE) ? RK_BLK_SIZE : remaining;
+
+ rc4_encode(buf + offset, step, rc4_key);
+ offset += RK_BLK_SIZE;
+ remaining -= step;
+ }
+}
+
+int rkcommon_vrec_header(struct image_tool_params *params,
+ struct image_type_params *tparams,
+ unsigned int alignment)
+{
+ unsigned int unpadded_size;
+ unsigned int padded_size;
+
+ /*
+ * The SPL image looks as follows:
+ *
+ * 0x0 header0 (see rkcommon.c)
+ * 0x800 spl_name ('RK30', ..., 'RK33')
+ * (start of the payload for AArch64 payloads: we expect the
+ * first 4 bytes to be available for overwriting with our
+ * spl_name)
+ * 0x804 first instruction to be executed
+ * (start of the image/payload for 32bit payloads)
+ *
+ * For AArch64 (ARMv8) payloads, natural alignment (8-bytes) is
+ * required for its sections (so the image we receive needs to
+ * have the first 4 bytes reserved for the spl_name). Reserving
+ * these 4 bytes is done using the BOOT0_HOOK infrastructure.
+ *
+ * Depending on this, the header is either 0x800 (if this is a
+ * 'boot0'-style payload, which has reserved 4 bytes at the
+ * beginning for the 'spl_name' and expects us to overwrite
+ * its first 4 bytes) or 0x804 bytes in length.
+ */
+ if (rkcommon_spl_is_boot0(params))
+ tparams->header_size = RK_SPL_HDR_START;
+ else
+ tparams->header_size = RK_SPL_HDR_START + 4;
+
+ /* Allocate, clear and install the header */
+ tparams->hdr = malloc(tparams->header_size);
+ memset(tparams->hdr, 0, tparams->header_size);
+ tparams->header_size = tparams->header_size;
+
+ /*
+ * If someone passed in 0 for the alignment, we'd better handle
+ * it correctly...
+ */
+ if (!alignment)
+ alignment = 1;
+
+ unpadded_size = tparams->header_size + params->file_size;
+ padded_size = ROUND(unpadded_size, alignment);
+
+ return padded_size - unpadded_size;
+}
projects / u-boot / blobdiff