*/
#include "common.h"
+#include <command.h>
#include "asm/errno.h"
#include "asm/io.h"
#include "asm/immap_qe.h"
void qe_issue_cmd(uint cmd, uint sbc, u8 mcn, u32 cmd_data)
{
- u32 cecr;
+ u32 cecr;
if (cmd == QE_RESET) {
out_be32(&qe_immr->cp.cecr,(u32) (cmd | QE_CR_FLG));
return 0;
}
+/* The maximum number of RISCs we support */
+#define MAX_QE_RISC 2
+
+/* Firmware information stored here for qe_get_firmware_info() */
+static struct qe_firmware_info qe_firmware_info;
+
+/*
+ * Set to 1 if QE firmware has been uploaded, and therefore
+ * qe_firmware_info contains valid data.
+ */
+static int qe_firmware_uploaded;
+
+/*
+ * Upload a QE microcode
+ *
+ * This function is a worker function for qe_upload_firmware(). It does
+ * the actual uploading of the microcode.
+ */
+static void qe_upload_microcode(const void *base,
+ const struct qe_microcode *ucode)
+{
+ const u32 *code = base + be32_to_cpu(ucode->code_offset);
+ unsigned int i;
+
+ if (ucode->major || ucode->minor || ucode->revision)
+ printf("QE: uploading microcode '%s' version %u.%u.%u\n",
+ ucode->id, ucode->major, ucode->minor, ucode->revision);
+ else
+ printf("QE: uploading microcode '%s'\n", ucode->id);
+
+ /* Use auto-increment */
+ out_be32(&qe_immr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
+ QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);
+
+ for (i = 0; i < be32_to_cpu(ucode->count); i++)
+ out_be32(&qe_immr->iram.idata, be32_to_cpu(code[i]));
+}
+
+/*
+ * Upload a microcode to the I-RAM at a specific address.
+ *
+ * See docs/README.qe_firmware for information on QE microcode uploading.
+ *
+ * Currently, only version 1 is supported, so the 'version' field must be
+ * set to 1.
+ *
+ * The SOC model and revision are not validated, they are only displayed for
+ * informational purposes.
+ *
+ * 'calc_size' is the calculated size, in bytes, of the firmware structure and
+ * all of the microcode structures, minus the CRC.
+ *
+ * 'length' is the size that the structure says it is, including the CRC.
+ */
+int qe_upload_firmware(const struct qe_firmware *firmware)
+{
+ unsigned int i;
+ unsigned int j;
+ u32 crc;
+ size_t calc_size = sizeof(struct qe_firmware);
+ size_t length;
+ const struct qe_header *hdr;
+
+ if (!firmware) {
+ printf("Invalid address\n");
+ return -EINVAL;
+ }
+
+ hdr = &firmware->header;
+ length = be32_to_cpu(hdr->length);
+
+ /* Check the magic */
+ if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
+ (hdr->magic[2] != 'F')) {
+ printf("Not a microcode\n");
+ return -EPERM;
+ }
+
+ /* Check the version */
+ if (hdr->version != 1) {
+ printf("Unsupported version\n");
+ return -EPERM;
+ }
+
+ /* Validate some of the fields */
+ if ((firmware->count < 1) || (firmware->count >= MAX_QE_RISC)) {
+ printf("Invalid data\n");
+ return -EINVAL;
+ }
+
+ /* Validate the length and check if there's a CRC */
+ calc_size += (firmware->count - 1) * sizeof(struct qe_microcode);
+
+ for (i = 0; i < firmware->count; i++)
+ /*
+ * For situations where the second RISC uses the same microcode
+ * as the first, the 'code_offset' and 'count' fields will be
+ * zero, so it's okay to add those.
+ */
+ calc_size += sizeof(u32) *
+ be32_to_cpu(firmware->microcode[i].count);
+
+ /* Validate the length */
+ if (length != calc_size + sizeof(u32)) {
+ printf("Invalid length\n");
+ return -EPERM;
+ }
+
+ /*
+ * Validate the CRC. We would normally call crc32_no_comp(), but that
+ * function isn't available unless you turn on JFFS support.
+ */
+ crc = be32_to_cpu(*(u32 *)((void *)firmware + calc_size));
+ if (crc != (crc32(-1, (const void *) firmware, calc_size) ^ -1)) {
+ printf("Firmware CRC is invalid\n");
+ return -EIO;
+ }
+
+ /*
+ * If the microcode calls for it, split the I-RAM.
+ */
+ if (!firmware->split) {
+ out_be16(&qe_immr->cp.cercr,
+ in_be16(&qe_immr->cp.cercr) | QE_CP_CERCR_CIR);
+ }
+
+ if (firmware->soc.model)
+ printf("Firmware '%s' for %u V%u.%u\n",
+ firmware->id, be16_to_cpu(firmware->soc.model),
+ firmware->soc.major, firmware->soc.minor);
+ else
+ printf("Firmware '%s'\n", firmware->id);
+
+ /*
+ * The QE only supports one microcode per RISC, so clear out all the
+ * saved microcode information and put in the new.
+ */
+ memset(&qe_firmware_info, 0, sizeof(qe_firmware_info));
+ strcpy(qe_firmware_info.id, firmware->id);
+ qe_firmware_info.extended_modes = firmware->extended_modes;
+ memcpy(qe_firmware_info.vtraps, firmware->vtraps,
+ sizeof(firmware->vtraps));
+ qe_firmware_uploaded = 1;
+
+ /* Loop through each microcode. */
+ for (i = 0; i < firmware->count; i++) {
+ const struct qe_microcode *ucode = &firmware->microcode[i];
+
+ /* Upload a microcode if it's present */
+ if (ucode->code_offset)
+ qe_upload_microcode(firmware, ucode);
+
+ /* Program the traps for this processor */
+ for (j = 0; j < 16; j++) {
+ u32 trap = be32_to_cpu(ucode->traps[j]);
+
+ if (trap)
+ out_be32(&qe_immr->rsp[i].tibcr[j], trap);
+ }
+
+ /* Enable traps */
+ out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
+ }
+
+ return 0;
+}
+
+struct qe_firmware_info *qe_get_firmware_info(void)
+{
+ return qe_firmware_uploaded ? &qe_firmware_info : NULL;
+}
+
+static int qe_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr;
+
+ if (argc < 3) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if (strcmp(argv[1], "fw") == 0) {
+ addr = simple_strtoul(argv[2], NULL, 16);
+
+ if (!addr) {
+ printf("Invalid address\n");
+ return -EINVAL;
+ }
+
+ /*
+ * If a length was supplied, compare that with the 'length'
+ * field.
+ */
+
+ if (argc > 3) {
+ ulong length = simple_strtoul(argv[3], NULL, 16);
+ struct qe_firmware *firmware = (void *) addr;
+
+ if (length != be32_to_cpu(firmware->header.length)) {
+ printf("Length mismatch\n");
+ return -EINVAL;
+ }
+ }
+
+ return qe_upload_firmware((const struct qe_firmware *) addr);
+ }
+
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+}
+
+U_BOOT_CMD(
+ qe, 4, 0, qe_cmd,
+ "qe - QUICC Engine commands\n",
+ "fw <addr> [<length>] - Upload firmware binary at address <addr> to "
+ "the QE,\n\twith optional length <length> verification.\n"
+ );
+
#endif /* CONFIG_QE */
projects / people / ms / u-boot.git / blobdiff