[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

Defining variable gic_dist_addr as a globe one prevents function
armv7_init_nonsec() from being used before relocation which is
the case in the deep sleep resume process on Freescale QorIQ SoC
platforms.
This patch removes this limitation by adding a extra same meaning
local variable. In this way, no exsiting codes get corrupts.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
---
 arch/arm/cpu/armv7/virt-v7.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/cpu/armv7/virt-v7.c b/arch/arm/cpu/armv7/virt-v7.c
index 651ca40..e1dfce9 100644
--- a/arch/arm/cpu/armv7/virt-v7.c
+++ b/arch/arm/cpu/armv7/virt-v7.c
@@ -75,6 +75,7 @@ int armv7_init_nonsec(void)
 {
 	unsigned int reg;
 	unsigned itlinesnr, i;
+	unsigned long gic_base_addr;
 
 	/* check whether the CPU supports the security extensions */
 	reg = read_id_pfr1();
@@ -89,23 +90,24 @@ int armv7_init_nonsec(void)
 	 * any access to it will trap.
 	 */
 
-	gic_dist_addr = get_gicd_base_address();
-	if (gic_dist_addr == -1)
+	gic_base_addr = get_gicd_base_address();
+	gic_dist_addr = gic_base_addr;
+	if (gic_base_addr == -1)
 		return -1;
 
 	/* enable the GIC distributor */
-	writel(readl(gic_dist_addr + GICD_CTLR) | 0x03,
-	       gic_dist_addr + GICD_CTLR);
+	writel(readl(gic_base_addr + GICD_CTLR) | 0x03,
+	       gic_base_addr + GICD_CTLR);
 
 	/* TYPER[4:0] contains an encoded number of available interrupts */
-	itlinesnr = readl(gic_dist_addr + GICD_TYPER) & 0x1f;
+	itlinesnr = readl(gic_base_addr + GICD_TYPER) & 0x1f;
 
 	/* set all bits in the GIC group registers to one to allow access
 	 * from non-secure state. The first 32 interrupts are private per
 	 * CPU and will be set later when enabling the GIC for each core
 	 */
 	for (i = 1; i <= itlinesnr; i++)
-		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
+		writel((unsigned)-1, gic_base_addr + GICD_IGROUPRn + 4 * i);
 
 #ifndef CONFIG_ARMV7_PSCI
 	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen), -1);
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

These patches depend on the following patches:
https://patchwork.ozlabs.org/patch/389949/
https://patchwork.ozlabs.org/patch/389950/
https://patchwork.ozlabs.org/patch/389951/
https://patchwork.ozlabs.org/patch/389952/

Tang Yuantian (4):
  Add deep sleep framework support for Freescale QorIQ platforms
  ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation
  arm: ls102xa: Fixed a register definition error
  arm: ls1021qds: Add deep sleep support

 arch/arm/cpu/armv7/virt-v7.c                      | 14 +++---
 arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h |  2 +-
 board/freescale/ls1021aqds/ddr.c                  |  7 +++
 board/freescale/ls1021aqds/ls1021aqds.c           | 60 +++++++++++++++++++++++
 common/board_f.c                                  | 10 ++++
 drivers/ddr/fsl/arm_ddr_gen3.c                    | 48 ++++++++++++++++--
 include/configs/ls1021aqds.h                      |  4 ++
 include/fsl_ddr_sdram.h                           |  2 +
 include/fsl_sleep.h                               | 32 ++++++++++++
 9 files changed, 167 insertions(+), 12 deletions(-)
 create mode 100644 include/fsl_sleep.h

-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 1/4] Add deep sleep framework support for Freescale QorIQ platforms

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

When Freescale QorIQ SoCs wake up from deep sleep, control is
passed to the primary core that starts executing uboot. After
re-initialized some IP blocks, like DDRC, kernel will take
responsibility to continue to restore environment it leaves before.

This patch adds the deep sleep framework support for all Freescale
QorIQ platforms that use generic_board configuation.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
---
 common/board_f.c               | 10 +++++++++
 drivers/ddr/fsl/arm_ddr_gen3.c | 48 +++++++++++++++++++++++++++++++++++++-----
 include/fsl_ddr_sdram.h        |  2 ++
 include/fsl_sleep.h            | 32 ++++++++++++++++++++++++++++
 4 files changed, 87 insertions(+), 5 deletions(-)
 create mode 100644 include/fsl_sleep.h

diff --git a/common/board_f.c b/common/board_f.c
index e6aa298..b736d29 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -56,6 +56,9 @@
 #endif
 #include <dm/root.h>
 #include <linux/compiler.h>
+#ifdef CONFIG_FSL_DEEP_SLEEP
+#include <fsl_sleep.h>
+#endif
 
 /*
  * Pointer to initial global data area
@@ -921,6 +924,9 @@ static init_fnc_t init_sequence_f[] = {
 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
 	init_func_ram,
 #endif
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	fsl_dp_resume,
+#endif
 #ifdef CONFIG_POST
 	post_init_f,
 #endif
@@ -1027,6 +1033,10 @@ void board_init_f(ulong boot_flags)
 	gd->flags = boot_flags;
 	gd->have_console = 0;
 
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	if (is_warm_boot())
+		gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
+#endif
 	if (initcall_run_list(init_sequence_f))
 		hang();
 
diff --git a/drivers/ddr/fsl/arm_ddr_gen3.c b/drivers/ddr/fsl/arm_ddr_gen3.c
index 59f2fd6..1a9d82b 100644
--- a/drivers/ddr/fsl/arm_ddr_gen3.c
+++ b/drivers/ddr/fsl/arm_ddr_gen3.c
@@ -12,6 +12,9 @@
 #include <asm/processor.h>
 #include <fsl_immap.h>
 #include <fsl_ddr.h>
+#ifdef CONFIG_FSL_DEEP_SLEEP
+#include <fsl_sleep.h>
+#endif
 
 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
@@ -92,7 +95,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	ddr_out32(&ddr->timing_cfg_0, regs->timing_cfg_0);
 	ddr_out32(&ddr->timing_cfg_1, regs->timing_cfg_1);
 	ddr_out32(&ddr->timing_cfg_2, regs->timing_cfg_2);
-	ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
 	ddr_out32(&ddr->sdram_mode, regs->ddr_sdram_mode);
 	ddr_out32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
 	ddr_out32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
@@ -105,8 +107,25 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
 	ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
 	ddr_out32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
-	ddr_out32(&ddr->init_addr, regs->ddr_init_addr);
-	ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	if (is_warm_boot()) {
+		ddr_out32(&ddr->sdram_cfg_2,
+			  regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
+		ddr_out32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE);
+		ddr_out32(&ddr->init_ext_addr, (1 << 31));
+
+		/* DRAM VRef will not be trained */
+		temp_sdram_cfg = ddr_in32(&ddr->ddr_cdr2);
+		temp_sdram_cfg &= ~DDR_CDR2_VREF_TRAIN_EN;
+		ddr_out32(&ddr->ddr_cdr2, temp_sdram_cfg);
+	} else
+#endif
+	{
+		ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
+		ddr_out32(&ddr->init_addr, regs->ddr_init_addr);
+		ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
+		ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
+	}
 
 	ddr_out32(&ddr->timing_cfg_4, regs->timing_cfg_4);
 	ddr_out32(&ddr->timing_cfg_5, regs->timing_cfg_5);
@@ -128,7 +147,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	ddr_out32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
 	ddr_out32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
 	ddr_out32(&ddr->ddr_cdr1, regs->ddr_cdr1);
-	ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
 	ddr_out32(&ddr->err_disable, regs->err_disable);
 	ddr_out32(&ddr->err_int_en, regs->err_int_en);
 	for (i = 0; i < 32; i++) {
@@ -167,8 +185,20 @@ step2:
 	udelay(500);
 	asm volatile("dsb sy;isb");
 
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	if (is_warm_boot()) {
+		/* enter self-refresh */
+		temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
+		temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
+		ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
+		/* do board specific memory setup */
+		fsl_dp_mem_setup();
+
+		temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
+	} else
+#endif
+		temp_sdram_cfg = (in_be32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI);
 	/* Let the controller go */
-	temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
 	ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
 	asm volatile("dsb sy;isb");
 
@@ -211,4 +241,12 @@ step2:
 
 	if (timeout <= 0)
 		printf("Waiting for D_INIT timeout. Memory may not work.\n");
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	if (is_warm_boot()) {
+		/* exit self-refresh */
+		temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
+		temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
+		ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
+	}
+#endif
 }
diff --git a/include/fsl_ddr_sdram.h b/include/fsl_ddr_sdram.h
index 5b03c14..b69b1dc 100644
--- a/include/fsl_ddr_sdram.h
+++ b/include/fsl_ddr_sdram.h
@@ -114,6 +114,7 @@ typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t;
 #define SDRAM_CFG_2T_EN			0x00008000
 #define SDRAM_CFG_BI			0x00000001
 
+#define SDRAM_CFG2_FRC_SR		0x80000000
 #define SDRAM_CFG2_D_INIT		0x00000010
 #define SDRAM_CFG2_ODT_CFG_MASK		0x00600000
 #define SDRAM_CFG2_ODT_NEVER		0
@@ -163,6 +164,7 @@ typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t;
 #define DDR_CDR1_ODT(x) ((x & DDR_CDR1_ODT_MASK) << DDR_CDR1_ODT_SHIFT)
 #define DDR_CDR2_ODT(x) (x & DDR_CDR2_ODT_MASK)
 #define DDR_CDR2_VREF_OVRD(x)	(0x00008080 | ((((x) - 37) & 0x3F) << 8))
+#define DDR_CDR2_VREF_TRAIN_EN	0x00000080
 
 #if (defined(CONFIG_SYS_FSL_DDR_VER) && \
 	(CONFIG_SYS_FSL_DDR_VER >= FSL_DDR_VER_4_7))
diff --git a/include/fsl_sleep.h b/include/fsl_sleep.h
new file mode 100644
index 0000000..429e302
--- /dev/null
+++ b/include/fsl_sleep.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __DEEP_SLEEP_H
+#define __DEEP_SLEEP_H
+
+/*
+ * Functions prototype for sleep.
+ * Each platform that supports deep sleep needs to
+ * implement them on their own.
+ */
+
+/* determine if it is a wakeup from deep sleep */
+bool is_warm_boot(void);
+
+/* board specific memory setup, like CKE isolation */
+void fsl_dp_mem_setup(void);
+
+/* clean up everything and jump to kernel */
+int fsl_dp_resume(void);
+
+/*
+ * 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.
+ */
+void fsl_dp_ddr_restore(void);
+
+#endif
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

Defining variable gic_dist_addr as a globe one prevents function
armv7_init_nonsec() from being used before relocation which is
the case in the deep sleep resume process on Freescale QorIQ SoC
platforms.
This patch removes this limitation by adding a extra same meaning
local variable. In this way, no exsiting codes get corrupts.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
---
 arch/arm/cpu/armv7/virt-v7.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/cpu/armv7/virt-v7.c b/arch/arm/cpu/armv7/virt-v7.c
index 651ca40..e1dfce9 100644
--- a/arch/arm/cpu/armv7/virt-v7.c
+++ b/arch/arm/cpu/armv7/virt-v7.c
@@ -75,6 +75,7 @@ int armv7_init_nonsec(void)
 {
 	unsigned int reg;
 	unsigned itlinesnr, i;
+	unsigned long gic_base_addr;
 
 	/* check whether the CPU supports the security extensions */
 	reg = read_id_pfr1();
@@ -89,23 +90,24 @@ int armv7_init_nonsec(void)
 	 * any access to it will trap.
 	 */
 
-	gic_dist_addr = get_gicd_base_address();
-	if (gic_dist_addr == -1)
+	gic_base_addr = get_gicd_base_address();
+	gic_dist_addr = gic_base_addr;
+	if (gic_base_addr == -1)
 		return -1;
 
 	/* enable the GIC distributor */
-	writel(readl(gic_dist_addr + GICD_CTLR) | 0x03,
-	       gic_dist_addr + GICD_CTLR);
+	writel(readl(gic_base_addr + GICD_CTLR) | 0x03,
+	       gic_base_addr + GICD_CTLR);
 
 	/* TYPER[4:0] contains an encoded number of available interrupts */
-	itlinesnr = readl(gic_dist_addr + GICD_TYPER) & 0x1f;
+	itlinesnr = readl(gic_base_addr + GICD_TYPER) & 0x1f;
 
 	/* set all bits in the GIC group registers to one to allow access
 	 * from non-secure state. The first 32 interrupts are private per
 	 * CPU and will be set later when enabling the GIC for each core
 	 */
 	for (i = 1; i <= itlinesnr; i++)
-		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
+		writel((unsigned)-1, gic_base_addr + GICD_IGROUPRn + 4 * i);
 
 #ifndef CONFIG_ARMV7_PSCI
 	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen), -1);
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 3/4] arm: ls102xa: Fixed a register definition error

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

There are 8 SCFG_SPARECR registers in SCFG memory block, not one.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
---
 arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index 7995fe2..b5db720 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -182,7 +182,7 @@ struct ccsr_scfg {
 	u32 etsecmcr;
 	u32 sdhciovserlcr;
 	u32 resv14[61];
-	u32 sparecr;
+	u32 sparecr[8];
 };
 
 /* Clocking */
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 4/4] arm: ls1021qds: Add deep sleep support

[Yuantian.Tang at freescale.com]

From: Tang Yuantian <Yuantian.Tang@freescale.com>

Add deep sleep support on Freescale LS1021QDS platform.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
---
 board/freescale/ls1021aqds/ddr.c        |  7 ++++
 board/freescale/ls1021aqds/ls1021aqds.c | 60 +++++++++++++++++++++++++++++++++
 include/configs/ls1021aqds.h            |  4 +++
 3 files changed, 71 insertions(+)

diff --git a/board/freescale/ls1021aqds/ddr.c b/board/freescale/ls1021aqds/ddr.c
index 5898e33..6dad4cc 100644
--- a/board/freescale/ls1021aqds/ddr.c
+++ b/board/freescale/ls1021aqds/ddr.c
@@ -8,6 +8,9 @@
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr_dimm_params.h>
 #include "ddr.h"
+#ifdef CONFIG_FSL_DEEP_SLEEP
+#include <fsl_sleep.h>
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -156,6 +159,10 @@ phys_size_t initdram(int board_type)
 	puts("Initializing DDR....using SPD\n");
 	dram_size = fsl_ddr_sdram();
 
+#ifdef CONFIG_FSL_DEEP_SLEEP
+	fsl_dp_ddr_restore();
+#endif
+
 	return dram_size;
 }
 
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 12e83f7..e9dce36 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -253,3 +253,63 @@ u16 flash_read16(void *addr)
 
 	return (((val) >> 8) & 0x00ff) | (((val) << 8) & 0xff00);
 }
+
+#ifdef CONFIG_FSL_DEEP_SLEEP
+/* determine if it is a warm boot */
+bool is_warm_boot(void)
+{
+#define DCFG_CCSR_CRSTSR_WDRFR	(1 << 3)
+	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_mem_setup(void)
+{
+	/* does not provide HW signals for power management */
+	QIXIS_WRITE(pwr_ctl[1], (QIXIS_READ(pwr_ctl[1]) & ~0x2));
+	udelay(1);
+}
+
+void fsl_dp_ddr_restore(void)
+{
+#define DDR_BUFF_LEN	128
+	u64 *src, *dst;
+	int i;
+	struct ccsr_scfg *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+	if (!is_warm_boot())
+		return;
+
+	/* get the address of ddr date from SPARECR3, little endian */
+	src = (u64 *)in_le32(&scfg->sparecr[2]);
+	dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
+	for (i = 0; i < DDR_BUFF_LEN / 8; i++)
+		*dst++ = *src++;
+}
+
+int fsl_dp_resume(void)
+{
+	u32 start_addr;
+	void (*kernel_resume)(void);
+	struct ccsr_scfg *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+	if (!is_warm_boot())
+		return 0;
+
+	enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
+	armv7_init_nonsec();
+	cleanup_before_linux();
+
+	/* 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;
+}
+#endif
diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index bb47813..448a07e 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -19,6 +19,10 @@
 #define CONFIG_SKIP_LOWLEVEL_INIT
 #define CONFIG_BOARD_EARLY_INIT_F
 
+#define CONFIG_FSL_DEEP_SLEEP
+#ifdef CONFIG_FSL_DEEP_SLEEP
+#define CONFIG_SILENT_CONSOLE
+#endif
 /*
  * Size of malloc() pool
  */
-- 
2.1.0.27.g96db324

[U-Boot] [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms

[Yuantian Tang]

PING.

Thanks,
Yuantian

> -----Original Message-----
> From: Yuantian.Tang at freescale.com [mailto:Yuantian.Tang at freescale.com]
> Sent: Thursday, October 09, 2014 4:12 PM
> To: albert.u.boot at aribaud.net
> Cc: u-boot at lists.denx.de; Jin Zhengxiong-R64188; Sun York-R58495; Tang
> Yuantian-B29983
> Subject: [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms
> 
> From: Tang Yuantian <Yuantian.Tang@freescale.com>
> 
> These patches depend on the following patches:
> https://patchwork.ozlabs.org/patch/389949/
> https://patchwork.ozlabs.org/patch/389950/
> https://patchwork.ozlabs.org/patch/389951/
> https://patchwork.ozlabs.org/patch/389952/
> 
> Tang Yuantian (4):
>   Add deep sleep framework support for Freescale QorIQ platforms
>   ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation
>   arm: ls102xa: Fixed a register definition error
>   arm: ls1021qds: Add deep sleep support
> 
>  arch/arm/cpu/armv7/virt-v7.c                      | 14 +++---
>  arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h |  2 +-
>  board/freescale/ls1021aqds/ddr.c                  |  7 +++
>  board/freescale/ls1021aqds/ls1021aqds.c           | 60
> +++++++++++++++++++++++
>  common/board_f.c                                  | 10 ++++
>  drivers/ddr/fsl/arm_ddr_gen3.c                    | 48
> ++++++++++++++++--
>  include/configs/ls1021aqds.h                      |  4 ++
>  include/fsl_ddr_sdram.h                           |  2 +
>  include/fsl_sleep.h                               | 32 ++++++++++++
>  9 files changed, 167 insertions(+), 12 deletions(-)  create mode 100644
> include/fsl_sleep.h
> 
> --
> 2.1.0.27.g96db324

[U-Boot] [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms

[Albert ARIBAUD]

Hi Yuantian,

On Mon, 13 Oct 2014 09:41:35 +0000, Yuantian Tang
<Yuantian.Tang@freescale.com> wrote:

> PING.

This submission is only 4 days old, across a week ending. Can you please
wait a bit longer before pinging?

> Thanks,
> Yuantian

Amicalement,
-- 
Albert.

[U-Boot] [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms

[Yuantian Tang]

> -----Original Message-----
> From: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net]
> Sent: Monday, October 13, 2014 5:46 PM
> To: Tang Yuantian-B29983
> Cc: u-boot at lists.denx.de; Jin Zhengxiong-R64188; Sun York-R58495
> Subject: Re: [PATCH 0/4] Deep sleep patches for Freescale QorIQ platforms
> 
> Hi Yuantian,
> 
> On Mon, 13 Oct 2014 09:41:35 +0000, Yuantian Tang
> <Yuantian.Tang@freescale.com> wrote:
> 
> > PING.
> 
> This submission is only 4 days old, across a week ending. Can you please wait a
> bit longer before pinging?
> 
Yeah, I should've waited longer.
That you responded so quickly to the patches I sent earlier makes me think you are always a quick responder.
Take your time.

Thanks,
Yuantian
> > Thanks,
> > Yuantian
> 
> Amicalement,
> --
> Albert.

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[York Sun]

On 10/09/2014 01:11 AM, Yuantian.Tang at freescale.com wrote:
> From: Tang Yuantian <Yuantian.Tang@freescale.com>
> 
> Defining variable gic_dist_addr as a globe one prevents function
> armv7_init_nonsec() from being used before relocation which is
> the case in the deep sleep resume process on Freescale QorIQ SoC
> platforms.
> This patch removes this limitation by adding a extra same meaning
> local variable. In this way, no exsiting codes get corrupts.
> 
> Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
> ---
>  arch/arm/cpu/armv7/virt-v7.c | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/cpu/armv7/virt-v7.c b/arch/arm/cpu/armv7/virt-v7.c
> index 651ca40..e1dfce9 100644
> --- a/arch/arm/cpu/armv7/virt-v7.c
> +++ b/arch/arm/cpu/armv7/virt-v7.c
> @@ -75,6 +75,7 @@ int armv7_init_nonsec(void)
>  {
>  	unsigned int reg;
>  	unsigned itlinesnr, i;
> +	unsigned long gic_base_addr;
>  
>  	/* check whether the CPU supports the security extensions */
>  	reg = read_id_pfr1();
> @@ -89,23 +90,24 @@ int armv7_init_nonsec(void)
>  	 * any access to it will trap.
>  	 */
>  
> -	gic_dist_addr = get_gicd_base_address();
> -	if (gic_dist_addr == -1)
> +	gic_base_addr = get_gicd_base_address();
> +	gic_dist_addr = gic_base_addr;
> +	if (gic_base_addr == -1)
>  		return -1;
>  
>  	/* enable the GIC distributor */
> -	writel(readl(gic_dist_addr + GICD_CTLR) | 0x03,
> -	       gic_dist_addr + GICD_CTLR);
> +	writel(readl(gic_base_addr + GICD_CTLR) | 0x03,
> +	       gic_base_addr + GICD_CTLR);
>  
>  	/* TYPER[4:0] contains an encoded number of available interrupts */
> -	itlinesnr = readl(gic_dist_addr + GICD_TYPER) & 0x1f;
> +	itlinesnr = readl(gic_base_addr + GICD_TYPER) & 0x1f;
>  
>  	/* set all bits in the GIC group registers to one to allow access
>  	 * from non-secure state. The first 32 interrupts are private per
>  	 * CPU and will be set later when enabling the GIC for each core
>  	 */
>  	for (i = 1; i <= itlinesnr; i++)
> -		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
> +		writel((unsigned)-1, gic_base_addr + GICD_IGROUPRn + 4 * i);
>  
>  #ifndef CONFIG_ARMV7_PSCI
>  	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen), -1);
> 

Wouldn't it be better to declare gic_dist_base as a local variable? It is only
used once outside function armv7_switch_nonsec(). It could be replaced with
get_gicd_base_address() call.

York

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Yuantian Tang]

> -----Original Message-----
> From: Sun York-R58495
> Sent: Wednesday, October 15, 2014 11:44 PM
> To: Tang Yuantian-B29983; albert.u.boot at aribaud.net
> Cc: u-boot at lists.denx.de; Jin Zhengxiong-R64188
> Subject: Re: [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable
> before relocation
> 
> On 10/09/2014 01:11 AM, Yuantian.Tang at freescale.com wrote:
> > From: Tang Yuantian <Yuantian.Tang@freescale.com>
> >
> > Defining variable gic_dist_addr as a globe one prevents function
> > armv7_init_nonsec() from being used before relocation which is the
> > case in the deep sleep resume process on Freescale QorIQ SoC
> > platforms.
> > This patch removes this limitation by adding a extra same meaning
> > local variable. In this way, no exsiting codes get corrupts.
> >
> > Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
> > ---
> >  arch/arm/cpu/armv7/virt-v7.c | 14 ++++++++------
> >  1 file changed, 8 insertions(+), 6 deletions(-)
> >
> > diff --git a/arch/arm/cpu/armv7/virt-v7.c
> > b/arch/arm/cpu/armv7/virt-v7.c index 651ca40..e1dfce9 100644
> > --- a/arch/arm/cpu/armv7/virt-v7.c
> > +++ b/arch/arm/cpu/armv7/virt-v7.c
> > @@ -75,6 +75,7 @@ int armv7_init_nonsec(void)  {
> >  	unsigned int reg;
> >  	unsigned itlinesnr, i;
> > +	unsigned long gic_base_addr;
> >
> >  	/* check whether the CPU supports the security extensions */
> >  	reg = read_id_pfr1();
> > @@ -89,23 +90,24 @@ int armv7_init_nonsec(void)
> >  	 * any access to it will trap.
> >  	 */
> >
> > -	gic_dist_addr = get_gicd_base_address();
> > -	if (gic_dist_addr == -1)
> > +	gic_base_addr = get_gicd_base_address();
> > +	gic_dist_addr = gic_base_addr;
> > +	if (gic_base_addr == -1)
> >  		return -1;
> >
> >  	/* enable the GIC distributor */
> > -	writel(readl(gic_dist_addr + GICD_CTLR) | 0x03,
> > -	       gic_dist_addr + GICD_CTLR);
> > +	writel(readl(gic_base_addr + GICD_CTLR) | 0x03,
> > +	       gic_base_addr + GICD_CTLR);
> >
> >  	/* TYPER[4:0] contains an encoded number of available interrupts */
> > -	itlinesnr = readl(gic_dist_addr + GICD_TYPER) & 0x1f;
> > +	itlinesnr = readl(gic_base_addr + GICD_TYPER) & 0x1f;
> >
> >  	/* set all bits in the GIC group registers to one to allow access
> >  	 * from non-secure state. The first 32 interrupts are private per
> >  	 * CPU and will be set later when enabling the GIC for each core
> >  	 */
> >  	for (i = 1; i <= itlinesnr; i++)
> > -		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
> > +		writel((unsigned)-1, gic_base_addr + GICD_IGROUPRn + 4 * i);
> >
> >  #ifndef CONFIG_ARMV7_PSCI
> >  	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen),
> > -1);
> >
> 
> Wouldn't it be better to declare gic_dist_base as a local variable? It is only used
> once outside function armv7_switch_nonsec(). It could be replaced with
> get_gicd_base_address() call.
> 
I am with you. That's what I did in the first version of this patch. Patch links is at: http://patchwork.ozlabs.org/patch/391065/
But Albert seems have some concerns. The attached is what we discussed.

Now on the second thought, I prefer the way this patch proposed because if we define gic_dist_base as local variable,
That means function get_gicd_base_address() should be usable at any time in any mode. Can we make sure of that in the future?

Regards,
Yuantian

> York

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From: Yuantian Tang <Yuantian.Tang@freescale.com>
Subject: RE: [PATCH] ARM: HYP/non-sec: Make a variable as a local one
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[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[York Sun]

On 10/15/14 8:02 PM, "Tang Yuantian-B29983" <Yuantian.Tang@freescale.com>
wrote:

>> -----Original Message-----
>> From: Sun York-R58495
>> Sent: Wednesday, October 15, 2014 11:44 PM
>> To: Tang Yuantian-B29983; albert.u.boot at aribaud.net
>> Cc: u-boot at lists.denx.de; Jin Zhengxiong-R64188
>> Subject: Re: [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec()
>>usable
>> before relocation
>> 
>> On 10/09/2014 01:11 AM, Yuantian.Tang at freescale.com wrote:
>> > From: Tang Yuantian <Yuantian.Tang@freescale.com>
>> >
>> > Defining variable gic_dist_addr as a globe one prevents function
>> > armv7_init_nonsec() from being used before relocation which is the
>> > case in the deep sleep resume process on Freescale QorIQ SoC
>> > platforms.
>> > This patch removes this limitation by adding a extra same meaning
>> > local variable. In this way, no exsiting codes get corrupts.
>> >
>> > Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
>> > ---
>> >  arch/arm/cpu/armv7/virt-v7.c | 14 ++++++++------
>> >  1 file changed, 8 insertions(+), 6 deletions(-)
>> >
>> > diff --git a/arch/arm/cpu/armv7/virt-v7.c
>> > b/arch/arm/cpu/armv7/virt-v7.c index 651ca40..e1dfce9 100644
>> > --- a/arch/arm/cpu/armv7/virt-v7.c
>> > +++ b/arch/arm/cpu/armv7/virt-v7.c
>> > @@ -75,6 +75,7 @@ int armv7_init_nonsec(void)  {
>> >  	unsigned int reg;
>> >  	unsigned itlinesnr, i;
>> > +	unsigned long gic_base_addr;
>> >
>> >  	/* check whether the CPU supports the security extensions */
>> >  	reg = read_id_pfr1();
>> > @@ -89,23 +90,24 @@ int armv7_init_nonsec(void)
>> >  	 * any access to it will trap.
>> >  	 */
>> >
>> > -	gic_dist_addr = get_gicd_base_address();
>> > -	if (gic_dist_addr == -1)
>> > +	gic_base_addr = get_gicd_base_address();
>> > +	gic_dist_addr = gic_base_addr;
>> > +	if (gic_base_addr == -1)
>> >  		return -1;
>> >
>> >  	/* enable the GIC distributor */
>> > -	writel(readl(gic_dist_addr + GICD_CTLR) | 0x03,
>> > -	       gic_dist_addr + GICD_CTLR);
>> > +	writel(readl(gic_base_addr + GICD_CTLR) | 0x03,
>> > +	       gic_base_addr + GICD_CTLR);
>> >
>> >  	/* TYPER[4:0] contains an encoded number of available interrupts */
>> > -	itlinesnr = readl(gic_dist_addr + GICD_TYPER) & 0x1f;
>> > +	itlinesnr = readl(gic_base_addr + GICD_TYPER) & 0x1f;
>> >
>> >  	/* set all bits in the GIC group registers to one to allow access
>> >  	 * from non-secure state. The first 32 interrupts are private per
>> >  	 * CPU and will be set later when enabling the GIC for each core
>> >  	 */
>> >  	for (i = 1; i <= itlinesnr; i++)
>> > -		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
>> > +		writel((unsigned)-1, gic_base_addr + GICD_IGROUPRn + 4 * i);
>> >
>> >  #ifndef CONFIG_ARMV7_PSCI
>> >  	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen),
>> > -1);
>> >
>> 
>> Wouldn't it be better to declare gic_dist_base as a local variable? It
>>is only used
>> once outside function armv7_switch_nonsec(). It could be replaced with
>> get_gicd_base_address() call.
>> 
>I am with you. That's what I did in the first version of this patch.
>Patch links is at: http://patchwork.ozlabs.org/patch/391065/
>But Albert seems have some concerns. The attached is what we discussed.
>
>Now on the second thought, I prefer the way this patch proposed because
>if we define gic_dist_base as local variable,
>That means function get_gicd_base_address() should be usable at any time
>in any mode. Can we make sure of that in the future?

I don't strongly object introducing a new local variable. But I don't see
how the global variable is useful. Function get_gicd_base_address() should
be available all the time. It reads PERIPHBASE register, or return a
macro. It hasn't changed since the first patch added it in 2013. Not sure
if the original author Andre Przywara is available to comments.

York

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Yuantian Tang]

> >> Wouldn't it be better to declare gic_dist_base as a local variable?
> >>It is only used  once outside function armv7_switch_nonsec(). It could
> >>be replaced with
> >> get_gicd_base_address() call.
> >>
> >I am with you. That's what I did in the first version of this patch.
> >Patch links is at: http://patchwork.ozlabs.org/patch/391065/
> >But Albert seems have some concerns. The attached is what we discussed.
> >
> >Now on the second thought, I prefer the way this patch proposed because
> >if we define gic_dist_base as local variable, That means function
> >get_gicd_base_address() should be usable at any time in any mode. Can
> >we make sure of that in the future?
> 
> I don't strongly object introducing a new local variable. But I don't see how the
> global variable is useful. Function get_gicd_base_address() should be available all
> the time. It reads PERIPHBASE register, or return a macro. It hasn't changed
> since the first patch added it in 2013. Not sure if the original author Andre
> Przywara is available to comments.
> 
Thanks for your comments.
If no one objects the original patch, I like to resubmit it.

Hi Albert, what's your opinion on this?

Regards,
Yuantian

> York
> 

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Albert ARIBAUD]

Hello Yuantian,

On Thu, 16 Oct 2014 04:42:06 +0000, Yuantian Tang
<Yuantian.Tang@freescale.com> wrote:
> > >> Wouldn't it be better to declare gic_dist_base as a local variable?
> > >>It is only used  once outside function armv7_switch_nonsec(). It could
> > >>be replaced with
> > >> get_gicd_base_address() call.
> > >>
> > >I am with you. That's what I did in the first version of this patch.
> > >Patch links is at: http://patchwork.ozlabs.org/patch/391065/
> > >But Albert seems have some concerns. The attached is what we discussed.

FTR, I only had concerns with the patch subject / commit summary.
Regarding the patch itself, I just asked whether the global was not
used as some means of coordination which would have been broken by
turning it into a local, but you had checked, so that was fine.

> > >Now on the second thought, I prefer the way this patch proposed because
> > >if we define gic_dist_base as local variable, That means function
> > >get_gicd_base_address() should be usable at any time in any mode. Can
> > >we make sure of that in the future?
> > 
> > I don't strongly object introducing a new local variable. But I don't see how the
> > global variable is useful. Function get_gicd_base_address() should be available all
> > the time. It reads PERIPHBASE register, or return a macro. It hasn't changed
> > since the first patch added it in 2013. Not sure if the original author Andre
> > Przywara is available to comments.
> > 
> Thanks for your comments.
> If no one objects the original patch, I like to resubmit it.
>
> Hi Albert, what's your opinion on this?


Which 'original patch' do you mean?

If it is http://patchwork.ozlabs.org/patch/391065/ then I'm fine with
it and will apply it.
 
> Regards,
> Yuantian
> 
> > York
> > 

Amicalement,
-- 
Albert.

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Yuantian Tang]

> -----Original Message-----
> From: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net]
> Sent: Monday, October 27, 2014 5:42 PM
> To: Tang Yuantian-B29983
> Cc: Sun York-R58495; u-boot at lists.denx.de; Jin Zhengxiong-R64188
> Subject: Re: [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable
> before relocation
> 
> Hello Yuantian,
> 
> On Thu, 16 Oct 2014 04:42:06 +0000, Yuantian Tang
> <Yuantian.Tang@freescale.com> wrote:
> > > >> Wouldn't it be better to declare gic_dist_base as a local variable?
> > > >>It is only used  once outside function armv7_switch_nonsec(). It
> > > >>could be replaced with
> > > >> get_gicd_base_address() call.
> > > >>
> > > >I am with you. That's what I did in the first version of this patch.
> > > >Patch links is at: http://patchwork.ozlabs.org/patch/391065/
> > > >But Albert seems have some concerns. The attached is what we discussed.
> 
> FTR, I only had concerns with the patch subject / commit summary.
> Regarding the patch itself, I just asked whether the global was not used as some
> means of coordination which would have been broken by turning it into a local,
> but you had checked, so that was fine.
> 
> > > >Now on the second thought, I prefer the way this patch proposed
> > > >because if we define gic_dist_base as local variable, That means
> > > >function
> > > >get_gicd_base_address() should be usable at any time in any mode.
> > > >Can we make sure of that in the future?
> > >
> > > I don't strongly object introducing a new local variable. But I
> > > don't see how the global variable is useful. Function
> > > get_gicd_base_address() should be available all the time. It reads
> > > PERIPHBASE register, or return a macro. It hasn't changed since the
> > > first patch added it in 2013. Not sure if the original author Andre Przywara is
> available to comments.
> > >
> > Thanks for your comments.
> > If no one objects the original patch, I like to resubmit it.
> >
> > Hi Albert, what's your opinion on this?
> 
> 
> Which 'original patch' do you mean?
> 
> If it is http://patchwork.ozlabs.org/patch/391065/ then I'm fine with it and will
> apply it.
> 
Yes, it is.
But I marked it as superseded because, as you suggested, this patch is resent as part of "deep sleep" patch set.
I will send deep sleep patch set v2 to address TOM's concerns. You can apply them all together.

Thanks,
Yuantian

> > Regards,
> > Yuantian
> >
> > > York
> > >
> 
> Amicalement,
> --
> Albert.

[U-Boot] [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable before relocation

[Albert ARIBAUD]

Hello Yuantian,

On Tue, 28 Oct 2014 02:24:10 +0000, Yuantian Tang
<Yuantian.Tang@freescale.com> wrote:
> 
> > -----Original Message-----
> > From: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net]
> > Sent: Monday, October 27, 2014 5:42 PM
> > To: Tang Yuantian-B29983
> > Cc: Sun York-R58495; u-boot at lists.denx.de; Jin Zhengxiong-R64188
> > Subject: Re: [PATCH 2/4] ARM: HYP/non-sec: Make armv7_init_nonsec() usable
> > before relocation
> > 
> > Hello Yuantian,
> > 
> > On Thu, 16 Oct 2014 04:42:06 +0000, Yuantian Tang
> > <Yuantian.Tang@freescale.com> wrote:
> > > > >> Wouldn't it be better to declare gic_dist_base as a local variable?
> > > > >>It is only used  once outside function armv7_switch_nonsec(). It
> > > > >>could be replaced with
> > > > >> get_gicd_base_address() call.
> > > > >>
> > > > >I am with you. That's what I did in the first version of this patch.
> > > > >Patch links is at: http://patchwork.ozlabs.org/patch/391065/
> > > > >But Albert seems have some concerns. The attached is what we discussed.
> > 
> > FTR, I only had concerns with the patch subject / commit summary.
> > Regarding the patch itself, I just asked whether the global was not used as some
> > means of coordination which would have been broken by turning it into a local,
> > but you had checked, so that was fine.
> > 
> > > > >Now on the second thought, I prefer the way this patch proposed
> > > > >because if we define gic_dist_base as local variable, That means
> > > > >function
> > > > >get_gicd_base_address() should be usable at any time in any mode.
> > > > >Can we make sure of that in the future?
> > > >
> > > > I don't strongly object introducing a new local variable. But I
> > > > don't see how the global variable is useful. Function
> > > > get_gicd_base_address() should be available all the time. It reads
> > > > PERIPHBASE register, or return a macro. It hasn't changed since the
> > > > first patch added it in 2013. Not sure if the original author Andre Przywara is
> > available to comments.
> > > >
> > > Thanks for your comments.
> > > If no one objects the original patch, I like to resubmit it.
> > >
> > > Hi Albert, what's your opinion on this?
> > 
> > 
> > Which 'original patch' do you mean?
> > 
> > If it is http://patchwork.ozlabs.org/patch/391065/ then I'm fine with it and will
> > apply it.
> > 
> Yes, it is.
> But I marked it as superseded because, as you suggested, this patch is resent as part of "deep sleep" patch set.
> I will send deep sleep patch set v2 to address TOM's concerns. You can apply them all together.

Ok, thanks for the clarification.

> Thanks,
> Yuantian

Amicalement,
-- 
Albert.

[U-Boot] [PATCH 3/4] arm: ls102xa: Fixed a register definition error

[York Sun]

On 10/09/2014 01:11 AM, Yuantian.Tang at freescale.com wrote:
> From: Tang Yuantian <Yuantian.Tang@freescale.com>
> 
> There are 8 SCFG_SPARECR registers in SCFG memory block, not one.
> 
> Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
> ---
>  arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Applied to u-boot-fsl-qoriq master. Awaiting upstream. Thanks.

York