/*
* Upload a microcode to the I-RAM at a specific address.
*
* See Documentation/powerpc/qe-firmware.txt 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) {
printk(KERN_ERR "qe-firmware: invalid pointer\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')) {
printk(KERN_ERR "qe-firmware: not a microcode\n");
return -EPERM;
}
/* Check the version */
if (hdr->version != 1) {
printk(KERN_ERR "qe-firmware: unsupported version\n");
return -EPERM;
}
/* Validate some of the fields */
if ((firmware->count < 1) || (firmware->count > MAX_QE_RISC)) {
printk(KERN_ERR "qe-firmware: 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(__be32) *
be32_to_cpu(firmware->microcode[i].count);
/* Validate the length */
if (length != calc_size + sizeof(__be32)) {
printk(KERN_ERR "qe-firmware: invalid length\n");
return -EPERM;
}
/* Validate the CRC */
crc = be32_to_cpu(*(__be32 *)((void *)firmware + calc_size));
if (crc != crc32(0, firmware, calc_size)) {
printk(KERN_ERR "qe-firmware: firmware CRC is invalid\n");
return -EIO;
}
/*
* If the microcode calls for it, split the I-RAM.
*/
if (!firmware->split)
setbits16(&qe_immr->cp.cercr, QE_CP_CERCR_CIR);
if (firmware->soc.model)
printk(KERN_INFO
"qe-firmware: firmware '%s' for %u V%u.%u\n",
firmware->id, be16_to_cpu(firmware->soc.model),
firmware->soc.major, firmware->soc.minor);
else
printk(KERN_INFO "qe-firmware: 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));
/* 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));
}
qe_firmware_uploaded = 1;
return 0;
}
/*
* 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 u_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;
#ifdef CONFIG_DEEP_SLEEP
#ifdef CONFIG_LS102XA
struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
#else
ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif
#endif
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");
#ifdef CONFIG_DEEP_SLEEP
setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
#endif
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);
/* 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;
}
