[U-Boot] [PATCH] QE/DeepSleep: add QE deepsleep support for mpc85xx

[Zhao Qiang]

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 at freescale.com>
---
 arch/arm/include/asm/arch-ls102xa/config.h |  4 --
 board/freescale/common/mpc85xx_sleep.c     |  8 +++
 drivers/qe/qe.c                            | 82 ++++++++++++++++++++++++++++++
 drivers/qe/qe.h                            |  6 +++
 include/linux/immap_qe.h                   | 12 +++++
 5 files changed, 108 insertions(+), 4 deletions(-)

diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index 25cc862..4f686e3 100644
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -105,10 +105,6 @@
 
 #define DCU_LAYER_MAX_NUM			16
 
-#define QE_MURAM_SIZE          0x6000UL
-#define MAX_QE_RISC            1
-#define QE_NUM_OF_SNUM         28
-
 #define CONFIG_SYS_FSL_SRDS_1
 
 #ifdef CONFIG_LS102XA
diff --git a/board/freescale/common/mpc85xx_sleep.c b/board/freescale/common/mpc85xx_sleep.c
index f924e7f..9e4132c 100644
--- a/board/freescale/common/mpc85xx_sleep.c
+++ b/board/freescale/common/mpc85xx_sleep.c
@@ -7,6 +7,9 @@
 #include <common.h>
 #include <asm/immap_85xx.h>
 #include "sleep.h"
+#ifdef CONFIG_U_QE
+#include "../../../drivers/qe/qe.h"
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -65,6 +68,11 @@ static void dp_resume_prepare(void)
 	disable_cpc_sram();
 #endif
 	enable_cpc();
+
+#ifdef CONFIG_U_QE
+	u_qe_resume();
+#endif
+
 }
 
 int fsl_dp_resume(void)
diff --git a/drivers/qe/qe.c b/drivers/qe/qe.c
index d24651b..84e1433 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;
diff --git a/drivers/qe/qe.h b/drivers/qe/qe.h
index 33878f8..77b18e9 100644
--- a/drivers/qe/qe.h
+++ b/drivers/qe/qe.h
@@ -11,6 +11,9 @@
 #define __QE_H__
 
 #include "common.h"
+#ifdef CONFIG_U_QE
+#include <linux/immap_qe.h>
+#endif
 
 #define QE_NUM_OF_BRGS	16
 #define UCC_MAX_NUM	8
@@ -288,6 +291,9 @@ void qe_reset(void);
 #ifdef CONFIG_U_QE
 void u_qe_init(void);
 int u_qe_upload_firmware(const struct qe_firmware *firmware);
+void u_qe_resume(void);
+int u_qe_firmware_resume(const struct qe_firmware *firmware,
+			 qe_map_t *qe_immrr);
 #endif
 
 #endif /* __QE_H__ */
diff --git a/include/linux/immap_qe.h b/include/linux/immap_qe.h
index b317dcb..6d1f88e 100644
--- a/include/linux/immap_qe.h
+++ b/include/linux/immap_qe.h
@@ -24,6 +24,18 @@
 #endif
 #endif
 
+#ifdef CONFIG_LS102XA
+#define QE_MURAM_SIZE          0x6000UL
+#define MAX_QE_RISC            1
+#define QE_NUM_OF_SNUM         28
+#endif
+
+#ifdef CONFIG_PPC
+#define QE_IMMR_OFFSET		0x00140000
+#else
+#define QE_IMMR_OFFSET		0x01400000
+#endif
+
 /* QE I-RAM */
 typedef struct qe_iram {
 	u32 iadd;		/* I-RAM Address Register */
-- 
2.1.0.27.g96db324