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authorZhao Qiang <B45475@freescale.com>2015-03-25 17:02:59 +0800
committerYork Sun <yorksun@freescale.com>2015-04-21 10:19:19 -0700
commitae42eb035e86f2fca98adc5f5b59543a49797877 (patch)
tree6db2d7aa5d245cdd0aef8fc46223be292798ed08 /drivers/qe/qe.c
parentb4e78faab3ce31543ca59a97f8d7d19d66ac608b (diff)
QE/DeepSleep: add QE deepsleep support for mpc85xx
Muram will power off during deepsleep, and the microcode of qe in muram will be lost, it should be reload when resume. Signed-off-by: Zhao Qiang <B45475@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/qe/qe.c')
-rw-r--r--drivers/qe/qe.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/qe/qe.c b/drivers/qe/qe.c
index d24651b5ba..84e1433d9e 100644
--- a/drivers/qe/qe.c
+++ b/drivers/qe/qe.c
@@ -196,6 +196,18 @@ void u_qe_init(void)
}
#endif
+#ifdef CONFIG_U_QE
+void u_qe_resume(void)
+{
+ qe_map_t *qe_immrr;
+ uint qe_base = CONFIG_SYS_IMMR + QE_IMMR_OFFSET; /* QE immr base */
+ qe_immrr = (qe_map_t *)qe_base;
+
+ u_qe_firmware_resume((const void *)CONFIG_SYS_QE_FW_ADDR, qe_immrr);
+ out_be32(&qe_immrr->iram.iready, QE_IRAM_READY);
+}
+#endif
+
void qe_reset(void)
{
qe_issue_cmd(QE_RESET, QE_CR_SUBBLOCK_INVALID,
@@ -580,6 +592,76 @@ int u_qe_upload_firmware(const struct qe_firmware *firmware)
}
#endif
+#ifdef CONFIG_U_QE
+int u_qe_firmware_resume(const struct qe_firmware *firmware, qe_map_t *qe_immrr)
+{
+ unsigned int i;
+ unsigned int j;
+ const struct qe_header *hdr;
+ const u32 *code;
+#ifdef CONFIG_DEEP_SLEEP
+#ifdef CONFIG_PPC
+ ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+#else
+ struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
+#endif
+#endif
+
+ if (!firmware)
+ return -EINVAL;
+
+ hdr = &firmware->header;
+
+ /* Check the magic */
+ if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
+ (hdr->magic[2] != 'F')) {
+#ifdef CONFIG_DEEP_SLEEP
+ setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
+#endif
+ return -EPERM;
+ }
+
+ /*
+ * If the microcode calls for it, split the I-RAM.
+ */
+ if (!firmware->split) {
+ out_be16(&qe_immrr->cp.cercr,
+ in_be16(&qe_immrr->cp.cercr) | QE_CP_CERCR_CIR);
+ }
+
+ /* 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)
+ return 0;
+
+ code = (const void *)firmware + be32_to_cpu(ucode->code_offset);
+
+ /* Use auto-increment */
+ out_be32(&qe_immrr->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_immrr->iram.idata, be32_to_cpu(code[i]));
+
+ /* 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_immrr->rsp[i].tibcr[j], trap);
+ }
+
+ /* Enable traps */
+ out_be32(&qe_immrr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
+ }
+
+ return 0;
+}
+#endif
+
struct qe_firmware_info *qe_get_firmware_info(void)
{
return qe_firmware_uploaded ? &qe_firmware_info : NULL;