fsl/sleep: updated the deep sleep framework for QorIQ platforms

With the introducing of generic board and ARM-based cores, current
deep sleep framework doesn't work anymore.
This patch will convert the current framework to adapt this change.
Basically it does:
1. Converts all the Freescale's DDR driver to support deep sleep.
2. Added basic framework support for ARM-based and PPC-based
cores separately.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

4 files changed, 210 insertions, 0 deletions

diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index 59ddeef..9a91b90 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -37,6 +37,12 @@ endif
 
 obj-$(CONFIG_FSL_DIU_CH7301)	+= diu_ch7301.o
 
+ifdef CONFIG_ARM
+obj-$(CONFIG_DEEP_SLEEP)		+= arm_sleep.o
+else
+obj-$(CONFIG_DEEP_SLEEP)		+= mpc85xx_sleep.o
+endif
+
 obj-$(CONFIG_FSL_DCU_SII9022A)    += dcu_sii9022a.o
 
 obj-$(CONFIG_MPC8541CDS)	+= cds_pci_ft.o
diff --git a/board/freescale/common/arm_sleep.c b/board/freescale/common/arm_sleep.c
new file mode 100644
index 0000000..8edf878
--- /dev/null
+++ b/board/freescale/common/arm_sleep.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#if !defined(CONFIG_ARMV7_NONSEC) || !defined(CONFIG_ARMV7_VIRT)
+#error " Deep sleep needs non-secure mode support. "
+#else
+#include <asm/secure.h>
+#endif
+#include <asm/armv7.h>
+#include <asm/cache.h>
+
+#if defined(CONFIG_LS102XA)
+#include <asm/arch/immap_ls102xa.h>
+#endif
+
+#include "sleep.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void __weak board_mem_sleep_setup(void)
+{
+}
+
+void __weak board_sleep_prepare(void)
+{
+}
+
+bool is_warm_boot(void)
+{
+	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
+
+	if (in_be32(&gur->crstsr) & DCFG_CCSR_CRSTSR_WDRFR)
+		return 1;
+
+	return 0;
+}
+
+void fsl_dp_disable_console(void)
+{
+	gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
+}
+
+/*
+ * When wakeup from deep sleep, the first 128 bytes space
+ * will be used to do DDR training which corrupts the data
+ * in there. This function will restore them.
+ */
+static void dp_ddr_restore(void)
+{
+	u64 *src, *dst;
+	int i;
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+	/* get the address of ddr date from SPARECR3 */
+	src = (u64 *)in_le32(&scfg->sparecr[2]);
+	dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
+
+	for (i = 0; i < DDR_BUFF_LEN / 8; i++)
+		*dst++ = *src++;
+
+	flush_dcache_all();
+}
+
+static void dp_resume_prepare(void)
+{
+	dp_ddr_restore();
+	board_sleep_prepare();
+	armv7_init_nonsec();
+	cleanup_before_linux();
+}
+
+int fsl_dp_resume(void)
+{
+	u32 start_addr;
+	void (*kernel_resume)(void);
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+	if (!is_warm_boot())
+		return 0;
+
+	dp_resume_prepare();
+
+	/* Get the entry address and jump to kernel */
+	start_addr = in_le32(&scfg->sparecr[1]);
+	debug("Entry address is 0x%08x\n", start_addr);
+	kernel_resume = (void (*)(void))start_addr;
+	secure_ram_addr(_do_nonsec_entry)(kernel_resume, 0, 0, 0);
+
+	return 0;
+}
diff --git a/board/freescale/common/mpc85xx_sleep.c b/board/freescale/common/mpc85xx_sleep.c
new file mode 100644
index 0000000..f924e7f
--- /dev/null
+++ b/board/freescale/common/mpc85xx_sleep.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/immap_85xx.h>
+#include "sleep.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void __weak board_mem_sleep_setup(void)
+{
+}
+
+void __weak board_sleep_prepare(void)
+{
+}
+
+bool is_warm_boot(void)
+{
+	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+	if (in_be32(&gur->scrtsr[0]) & DCFG_CCSR_CRSTSR_WDRFR)
+		return 1;
+
+	return 0;
+}
+
+void fsl_dp_disable_console(void)
+{
+	gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
+}
+
+/*
+ * When wakeup from deep sleep, the first 128 bytes space
+ * will be used to do DDR training which corrupts the data
+ * in there. This function will restore them.
+ */
+static void dp_ddr_restore(void)
+{
+	volatile u64 *src, *dst;
+	int i;
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_MPC85xx_SCFG;
+
+	/* get the address of ddr date from SPARECR3 */
+	src = (u64 *)in_be32(&scfg->sparecr[2]);
+	dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
+
+	for (i = 0; i < DDR_BUFF_LEN / 8; i++)
+		*dst++ = *src++;
+
+	flush_dcache();
+}
+
+static void dp_resume_prepare(void)
+{
+	dp_ddr_restore();
+
+	board_sleep_prepare();
+
+	l2cache_init();
+#if defined(CONFIG_RAMBOOT_PBL)
+	disable_cpc_sram();
+#endif
+	enable_cpc();
+}
+
+int fsl_dp_resume(void)
+{
+	u32 start_addr;
+	void (*kernel_resume)(void);
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_MPC85xx_SCFG;
+
+	if (!is_warm_boot())
+		return 0;
+
+	dp_resume_prepare();
+
+	/* Get the entry address and jump to kernel */
+	start_addr = in_be32(&scfg->sparecr[1]);
+	debug("Entry address is 0x%08x\n", start_addr);
+	kernel_resume = (void (*)(void))start_addr;
+	kernel_resume();
+
+	return 0;
+}
diff --git a/board/freescale/common/sleep.h b/board/freescale/common/sleep.h
new file mode 100644
index 0000000..c26c542
--- /dev/null
+++ b/board/freescale/common/sleep.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __SLEEP_H
+#define __SLEEP_H
+
+#define DCFG_CCSR_CRSTSR_WDRFR	(1 << 3)
+#define DDR_BUFF_LEN			128
+
+/* determine if it is a wakeup from deep sleep */
+bool is_warm_boot(void);
+
+/* disable console output */
+void fsl_dp_disable_console(void);
+
+/* clean up everything and jump to kernel */
+int fsl_dp_resume(void);
+#endif