[U-Boot] [PATCH V2 00/11] imx: introduce rdc and boot auxiliary core

[U-Boot] [PATCH V2 00/11] imx: introduce rdc and boot auxiliary core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

To i.MX6SX and i.MX7D, there is a M4 core embedded. Resources
can be shared or occupied exclusively by setting Resource
domain controller between A9/7 core and M4 core.

Refer "Chapter 52 Resource Domain Controller (RDC)" of i.MX 6SoloX
RM and "Chapter 3.2 Resource Domain Controller (RDC)" of i.MX 7Dual RM
for detailed infomation.

To bootup M4 core, a new command 'bootaux' is introduced. To i.MX7D,
we need to setting RDC when booting M4 core, so make RDC and boot
auxiliary core patches into one patch set.

Since we also sometimes put the M4 image in QSPI to let M4 directly fecth
code in the memory mapped QSPI space, we can not support such as libz
compressed image.

Peng Fan (11):
  imx: mx6: introduce rdc regs
  imx: imx-common: introduce Resource Domain Controller support
  imx: mx6sx Add RDC mappings of masters and peripherals
  imx: mx7d: Add RDC support
  imx: mx7d: clock support for RDC
  imx: imx-common: introduce boot auxiliary core
  imx: mx6: implement functions to boot auxiliary core
  imx: mx6sxsabresd: add command and macros for boot m4 core
  imx: mx7: implement functions to boot auxiliary core
  imx: mx7dsabresd: add command and macros for boot m4 core
  imx: mx7d: isolate resources to domain 0 for A7 core

 arch/arm/cpu/armv7/mx6/soc.c               |  38 ++++++
 arch/arm/cpu/armv7/mx7/clock.c             |   6 +
 arch/arm/cpu/armv7/mx7/soc.c               | 100 ++++++++++++++++
 arch/arm/imx-common/Kconfig                |  14 +++
 arch/arm/imx-common/Makefile               |   2 +
 arch/arm/imx-common/imx_bootaux.c          |  72 ++++++++++++
 arch/arm/imx-common/rdc-sema.c             | 183 +++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx6/imx-rdc.h    |  16 +++
 arch/arm/include/asm/arch-mx6/imx-regs.h   |  29 +++++
 arch/arm/include/asm/arch-mx6/mx6sx_rdc.h  | 155 ++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx7/imx-rdc.h    |  16 +++
 arch/arm/include/asm/arch-mx7/imx-regs.h   |   8 ++
 arch/arm/include/asm/arch-mx7/mx7d_rdc.h   | 163 +++++++++++++++++++++++++
 arch/arm/include/asm/imx-common/rdc-sema.h | 100 ++++++++++++++++
 configs/mx7dsabresd_defconfig              |   2 +
 include/configs/mx6sxsabresd.h             |  24 ++++
 include/configs/mx7dsabresd.h              |  24 ++++
 17 files changed, 952 insertions(+)
 create mode 100644 arch/arm/imx-common/imx_bootaux.c
 create mode 100644 arch/arm/imx-common/rdc-sema.c
 create mode 100644 arch/arm/include/asm/arch-mx6/imx-rdc.h
 create mode 100644 arch/arm/include/asm/arch-mx6/mx6sx_rdc.h
 create mode 100644 arch/arm/include/asm/arch-mx7/imx-rdc.h
 create mode 100644 arch/arm/include/asm/arch-mx7/mx7d_rdc.h
 create mode 100644 arch/arm/include/asm/imx-common/rdc-sema.h

-- 
2.6.2

[U-Boot] [PATCH V2 01/11] imx: mx6: introduce rdc regs

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Introudce rdc regs structure and rdc sema reg structure for i.MX6.
For now, to i.MX6, only i.MX6SX supports this.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 arch/arm/include/asm/arch-mx6/imx-regs.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h
index f24525e..b1de751 100644
--- a/arch/arm/include/asm/arch-mx6/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx6/imx-regs.h
@@ -356,6 +356,30 @@ extern void imx_get_mac_from_fuse(int dev_id, unsigned char *mac);
 #define SRC_SCR_CORE_3_ENABLE_OFFSET    24
 #define SRC_SCR_CORE_3_ENABLE_MASK      (1<<SRC_SCR_CORE_3_ENABLE_OFFSET)
 
+struct rdc_regs {
+	u32	vir;		/* Version information */
+	u32	reserved1[8];
+	u32	stat;		/* Status */
+	u32	intctrl;	/* Interrupt and Control */
+	u32	intstat;	/* Interrupt Status */
+	u32	reserved2[116];
+	u32	mda[32];	/* Master Domain Assignment */
+	u32	reserved3[96];
+	u32	pdap[104];	/* Peripheral Domain Access Permissions */
+	u32	reserved4[88];
+	struct {
+		u32 mrsa;	/* Memory Region Start Address */
+		u32 mrea;	/* Memory Region End Address */
+		u32 mrc;	/* Memory Region Control */
+		u32 mrvs;	/* Memory Region Violation Status */
+	} mem_region[55];
+};
+
+struct rdc_sema_regs {
+	u8	gate[64];	/* Gate */
+	u16	rstgt;		/* Reset Gate */
+};
+
 /* WEIM registers */
 struct weim {
 	u32 cs0gcr1;
-- 
2.6.2

[U-Boot] [PATCH V2 02/11] imx: imx-common: introduce Resource Domain Controller support

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Introduce Resource Domain Controller support for i.MX.
Now i.MX6SX and i.MX7D supports this feature to assign masters
and peripherals to different domains.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 change imx_rdc_check_permission to support checking domain id.

 arch/arm/imx-common/Kconfig                |   8 ++
 arch/arm/imx-common/Makefile               |   1 +
 arch/arm/imx-common/rdc-sema.c             | 183 +++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx6/imx-rdc.h    |  12 ++
 arch/arm/include/asm/imx-common/rdc-sema.h | 100 ++++++++++++++++
 5 files changed, 304 insertions(+)
 create mode 100644 arch/arm/imx-common/rdc-sema.c
 create mode 100644 arch/arm/include/asm/arch-mx6/imx-rdc.h
 create mode 100644 arch/arm/include/asm/imx-common/rdc-sema.h

diff --git a/arch/arm/imx-common/Kconfig b/arch/arm/imx-common/Kconfig
index 2296239..c4f48bb 100644
--- a/arch/arm/imx-common/Kconfig
+++ b/arch/arm/imx-common/Kconfig
@@ -3,3 +3,11 @@ config IMX_CONFIG
 
 config ROM_UNIFIED_SECTIONS
 	bool
+
+config IMX_RDC
+	bool "i.MX Resource domain controller driver"
+	depends on ARCH_MX6 || ARCH_MX7
+	help
+	  i.MX Resource domain controller is used to assign masters
+	  and peripherals to differet domains. This can be used to
+	  isolate resources.
diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index e7190c3..568f41c 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -27,6 +27,7 @@ ifeq ($(SOC),$(filter $(SOC),mx6 mx7))
 obj-y 	+= cache.o init.o
 obj-$(CONFIG_CMD_SATA) += sata.o
 obj-$(CONFIG_IMX_VIDEO_SKIP) += video.o
+obj-$(CONFIG_IMX_RDC) += rdc-sema.o
 obj-$(CONFIG_SECURE_BOOT)    += hab.o
 endif
 ifeq ($(SOC),$(filter $(SOC),vf610))
diff --git a/arch/arm/imx-common/rdc-sema.c b/arch/arm/imx-common/rdc-sema.c
new file mode 100644
index 0000000..dcb5c41
--- /dev/null
+++ b/arch/arm/imx-common/rdc-sema.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/imx-common/rdc-sema.h>
+#include <asm/arch/imx-rdc.h>
+#include <asm-generic/errno.h>
+
+/*
+ * Check if the RDC Semaphore is required for this peripheral.
+ */
+static inline int imx_rdc_check_sema_required(int per_id)
+{
+	struct rdc_regs *imx_rdc = (struct rdc_regs *)RDC_BASE_ADDR;
+	u32 reg;
+
+	reg = readl(&imx_rdc->pdap[per_id]);
+	/*
+	 * No semaphore:
+	 * Intial value or this peripheral is assigned to only one domain
+	 */
+	if (!(reg & RDC_PDAP_SREQ_MASK))
+		return -ENOENT;
+
+	return 0;
+}
+
+/*
+ * Check the peripheral read / write access permission on Domain [dom_id].
+ */
+int imx_rdc_check_permission(int per_id, int dom_id)
+{
+	struct rdc_regs *imx_rdc = (struct rdc_regs *)RDC_BASE_ADDR;
+	u32 reg;
+
+	reg = readl(&imx_rdc->pdap[per_id]);
+	if (!(reg & RDC_PDAP_DRW_MASK(dom_id)))
+		return -EACCES;  /*No access*/
+
+	return 0;
+}
+
+/*
+ * Lock up the RDC semaphore for this peripheral if semaphore is required.
+ */
+int imx_rdc_sema_lock(int per_id)
+{
+	struct rdc_sema_regs *imx_rdc_sema;
+	int ret;
+	u8 reg;
+
+	ret = imx_rdc_check_sema_required(per_id);
+	if (ret)
+		return ret;
+
+	if (per_id < SEMA_GATES_NUM)
+		imx_rdc_sema  = (struct rdc_sema_regs *)SEMAPHORE1_BASE_ADDR;
+	else
+		imx_rdc_sema  = (struct rdc_sema_regs *)SEMAPHORE2_BASE_ADDR;
+
+	do {
+		writeb(RDC_SEMA_PROC_ID,
+		       &imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);
+		reg = readb(&imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);
+		if ((reg & RDC_SEMA_GATE_GTFSM_MASK) == RDC_SEMA_PROC_ID)
+			break;  /* Get the Semaphore*/
+	} while (1);
+
+	return 0;
+}
+
+/*
+ * Unlock the RDC semaphore for this peripheral if main CPU is the
+ * semaphore owner.
+ */
+int imx_rdc_sema_unlock(int per_id)
+{
+	struct rdc_sema_regs *imx_rdc_sema;
+	int ret;
+	u8 reg;
+
+	ret = imx_rdc_check_sema_required(per_id);
+	if (ret)
+		return ret;
+
+	if (per_id < SEMA_GATES_NUM)
+		imx_rdc_sema  = (struct rdc_sema_regs *)SEMAPHORE1_BASE_ADDR;
+	else
+		imx_rdc_sema  = (struct rdc_sema_regs *)SEMAPHORE2_BASE_ADDR;
+
+	reg = readb(&imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);
+	if ((reg & RDC_SEMA_GATE_GTFSM_MASK) != RDC_SEMA_PROC_ID)
+		return 1;	/*Not the semaphore owner */
+
+	writeb(0x0, &imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);
+
+	return 0;
+}
+
+/*
+ * Setup RDC setting for one peripheral
+ */
+int imx_rdc_setup_peri(rdc_peri_cfg_t p)
+{
+	struct rdc_regs *imx_rdc = (struct rdc_regs *)RDC_BASE_ADDR;
+	u32 reg = 0;
+	u32 share_count = 0;
+	u32 peri_id = p & RDC_PERI_MASK;
+	u32 domain = (p & RDC_DOMAIN_MASK) >> RDC_DOMAIN_SHIFT_BASE;
+
+	/* No domain assigned */
+	if (domain == 0)
+		return -EINVAL;
+
+	reg |= domain;
+
+	share_count = (domain & 0x3)
+		+ ((domain >> 2) & 0x3)
+		+ ((domain >> 4) & 0x3)
+		+ ((domain >> 6) & 0x3);
+
+	if (share_count > 0x3)
+		reg |= RDC_PDAP_SREQ_MASK;
+
+	writel(reg, &imx_rdc->pdap[peri_id]);
+
+	return 0;
+}
+
+/*
+ * Setup RDC settings for multiple peripherals
+ */
+int imx_rdc_setup_peripherals(rdc_peri_cfg_t const *peripherals_list,
+				     unsigned count)
+{
+	rdc_peri_cfg_t const *p = peripherals_list;
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = imx_rdc_setup_peri(*p);
+		if (ret)
+			return ret;
+		p++;
+	}
+
+	return 0;
+}
+
+/*
+ * Setup RDC setting for one master
+ */
+int imx_rdc_setup_ma(rdc_ma_cfg_t p)
+{
+	struct rdc_regs *imx_rdc = (struct rdc_regs *)RDC_BASE_ADDR;
+	u32 master_id = (p & RDC_MASTER_MASK) >> RDC_MASTER_SHIFT;
+	u32 domain = (p & RDC_DOMAIN_MASK) >> RDC_DOMAIN_SHIFT_BASE;
+
+	writel((domain & RDC_MDA_DID_MASK), &imx_rdc->mda[master_id]);
+
+	return 0;
+}
+
+/*
+ * Setup RDC settings for multiple masters
+ */
+int imx_rdc_setup_masters(rdc_ma_cfg_t const *masters_list, unsigned count)
+{
+	rdc_ma_cfg_t const *p = masters_list;
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = imx_rdc_setup_ma(*p);
+		if (ret)
+			return ret;
+		p++;
+	}
+
+	return 0;
+}
diff --git a/arch/arm/include/asm/arch-mx6/imx-rdc.h b/arch/arm/include/asm/arch-mx6/imx-rdc.h
new file mode 100644
index 0000000..5754f04
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx6/imx-rdc.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+
+#ifndef __IMX_RDC_H__
+#define __IMX_RDC_H__
+
+#error "Please select cpu"
+
+#endif	/* __IMX_RDC_H__*/
diff --git a/arch/arm/include/asm/imx-common/rdc-sema.h b/arch/arm/include/asm/imx-common/rdc-sema.h
new file mode 100644
index 0000000..ee73296
--- /dev/null
+++ b/arch/arm/include/asm/imx-common/rdc-sema.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+
+#ifndef __RDC_SEMA_H__
+#define __RDC_SEMA_H__
+
+/*
+ * rdc_peri_cfg_t and rdc_ma_cft_t use the same layout.
+ *
+ *   [ 23 22 | 21 20 | 19 18 | 17 16 ] | [ 15 - 8 ] | [ 7 - 0 ]
+ *      d3      d2      d1       d0    | master id  |  peri id
+ *   d[x] means domain[x], x can be [3 - 0].
+ */
+typedef u32 rdc_peri_cfg_t;
+typedef u32 rdc_ma_cfg_t;
+
+#define RDC_PERI_SHIFT		0
+#define RDC_PERI_MASK		0xFF
+
+#define RDC_DOMAIN_SHIFT_BASE	16
+#define RDC_DOMAIN_MASK		0xFF0000
+#define RDC_DOMAIN_SHIFT(x)	(RDC_DOMAIN_SHIFT_BASE + ((x << 1)))
+#define RDC_DOMAIN(x)		((rdc_peri_cfg_t)(0x3 << RDC_DOMAIN_SHIFT(x)))
+
+#define RDC_MASTER_SHIFT	8
+#define RDC_MASTER_MASK		0xFF00
+#define RDC_MASTER_CFG(master_id, domain_id) (rdc_ma_cfg_t)((master_id << 8) | \
+					(domain_id << RDC_DOMAIN_SHIFT_BASE))
+
+/* The Following macro definitions are common to i.MX6SX and i.MX7D */
+#define SEMA_GATES_NUM		64
+
+#define RDC_MDA_DID_SHIFT	0
+#define RDC_MDA_DID_MASK	(0x3 << RDC_MDA_DID_SHIFT)
+#define RDC_MDA_LCK_SHIFT	31
+#define RDC_MDA_LCK_MASK	(0x1 << RDC_MDA_LCK_SHIFT)
+
+#define RDC_PDAP_DW_SHIFT(domain)	((domain) << 1)
+#define RDC_PDAP_DR_SHIFT(domain)	(1 + RDC_PDAP_DW_SHIFT(domain))
+#define RDC_PDAP_DW_MASK(domain)	(1 << RDC_PDAP_DW_SHIFT(domain))
+#define RDC_PDAP_DR_MASK(domain)	(1 << RDC_PDAP_DR_SHIFT(domain))
+#define RDC_PDAP_DRW_MASK(domain)	(RDC_PDAP_DW_MASK(domain) | \
+					 RDC_PDAP_DR_MASK(domain))
+
+#define RDC_PDAP_SREQ_SHIFT	30
+#define RDC_PDAP_SREQ_MASK	(0x1 << RDC_PDAP_SREQ_SHIFT)
+#define RDC_PDAP_LCK_SHIFT	31
+#define RDC_PDAP_LCK_MASK	(0x1 << RDC_PDAP_LCK_SHIFT)
+
+#define RDC_MRSA_SADR_SHIFT	7
+#define RDC_MRSA_SADR_MASK	(0x1ffffff << RDC_MRSA_SADR_SHIFT)
+
+#define RDC_MREA_EADR_SHIFT	7
+#define RDC_MREA_EADR_MASK	(0x1ffffff << RDC_MREA_EADR_SHIFT)
+
+#define RDC_MRC_DW_SHIFT(domain)	(domain)
+#define RDC_MRC_DR_SHIFT(domain)	(1 + RDC_MRC_DW_SHIFT(domain))
+#define RDC_MRC_DW_MASK(domain)		(1 << RDC_MRC_DW_SHIFT(domain))
+#define RDC_MRC_DR_MASK(domain)		(1 << RDC_MRC_DR_SHIFT(domain))
+#define RDC_MRC_DRW_MASK(domain)	(RDC_MRC_DW_MASK(domain) | \
+					 RDC_MRC_DR_MASK(domain))
+#define RDC_MRC_ENA_SHIFT	30
+#define RDC_MRC_ENA_MASK	(0x1 << RDC_MRC_ENA_SHIFT)
+#define RDC_MRC_LCK_SHIFT	31
+#define RDC_MRC_LCK_MASK	(0x1 << RDC_MRC_LCK_SHIFT)
+
+#define RDC_MRVS_VDID_SHIFT	0
+#define RDC_MRVS_VDID_MASK	(0x3 << RDC_MRVS_VDID_SHIFT)
+#define RDC_MRVS_AD_SHIFT	4
+#define RDC_MRVS_AD_MASK	(0x1 << RDC_MRVS_AD_SHIFT)
+#define RDC_MRVS_VADDR_SHIFT	5
+#define RDC_MRVS_VADDR_MASK	(0x7ffffff << RDC_MRVS_VADDR_SHIFT)
+
+#define RDC_SEMA_GATE_GTFSM_SHIFT	0
+#define RDC_SEMA_GATE_GTFSM_MASK	(0xf << RDC_SEMA_GATE_GTFSM_SHIFT)
+#define RDC_SEMA_GATE_LDOM_SHIFT	5
+#define RDC_SEMA_GATE_LDOM_MASK		(0x3 << RDC_SEMA_GATE_LDOM_SHIFT)
+
+#define RDC_SEMA_RSTGT_RSTGDP_SHIFT	0
+#define RDC_SEMA_RSTGT_RSTGDP_MASK	(0xff << RDC_SEMA_RSTGT_RSTGDP_SHIFT)
+#define RDC_SEMA_RSTGT_RSTGSM_SHIFT	2
+#define RDC_SEMA_RSTGT_RSTGSM_MASK	(0x3 << RDC_SEMA_RSTGT_RSTGSM_SHIFT)
+#define RDC_SEMA_RSTGT_RSTGMS_SHIFT	4
+#define RDC_SEMA_RSTGT_RSTGMS_MASK	(0xf << RDC_SEMA_RSTGT_RSTGMS_SHIFT)
+#define RDC_SEMA_RSTGT_RSTGTN_SHIFT	8
+#define RDC_SEMA_RSTGT_RSTGTN_MASK	(0xff << RDC_SEMA_RSTGT_RSTGTN_SHIFT)
+
+int imx_rdc_check_permission(int per_id, int dom_id);
+int imx_rdc_sema_lock(int per_id);
+int imx_rdc_sema_unlock(int per_id);
+int imx_rdc_setup_peri(rdc_peri_cfg_t p);
+int imx_rdc_setup_peripherals(rdc_peri_cfg_t const *peripherals_list,
+			      unsigned count);
+int imx_rdc_setup_ma(rdc_ma_cfg_t p);
+int imx_rdc_setup_masters(rdc_ma_cfg_t const *masters_list, unsigned count);
+
+#endif	/* __RDC_SEMA_H__*/
-- 
2.6.2

[U-Boot] [PATCH V2 03/11] imx: mx6sx Add RDC mappings of masters and peripherals

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Add the definitions for the RDC mappings for i.MX6 SoloX.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 arch/arm/include/asm/arch-mx6/imx-rdc.h   |   4 +
 arch/arm/include/asm/arch-mx6/mx6sx_rdc.h | 155 ++++++++++++++++++++++++++++++
 2 files changed, 159 insertions(+)
 create mode 100644 arch/arm/include/asm/arch-mx6/mx6sx_rdc.h

diff --git a/arch/arm/include/asm/arch-mx6/imx-rdc.h b/arch/arm/include/asm/arch-mx6/imx-rdc.h
index 5754f04..c4d3bb4 100644
--- a/arch/arm/include/asm/arch-mx6/imx-rdc.h
+++ b/arch/arm/include/asm/arch-mx6/imx-rdc.h
@@ -7,6 +7,10 @@
 #ifndef __IMX_RDC_H__
 #define __IMX_RDC_H__
 
+#if defined(CONFIG_MX6SX)
+#include "mx6sx_rdc.h"
+#else
 #error "Please select cpu"
+#endif /* CONFIG_MX6SX */
 
 #endif	/* __IMX_RDC_H__*/
diff --git a/arch/arm/include/asm/arch-mx6/mx6sx_rdc.h b/arch/arm/include/asm/arch-mx6/mx6sx_rdc.h
new file mode 100644
index 0000000..addfe01
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx6/mx6sx_rdc.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+
+#ifndef __MX6SX_RDC_H__
+#define __MX6SX_RDC_H__
+
+#define RDC_SEMA_PROC_ID 2  /* The processor ID for main CPU */
+
+enum {
+	RDC_PER_PWM1 = 0,
+	RDC_PER_PWM2,
+	RDC_PER_PWM3,
+	RDC_PER_PWM4,
+	RDC_PER_CAN1,
+	RDC_PER_CAN2,
+	RDC_PER_GPT,
+	RDC_PER_GPIO1,
+	RDC_PER_GPIO2,
+	RDC_PER_GPIO3,
+	RDC_PER_GPIO4,
+	RDC_PER_GPIO5,
+	RDC_PER_GPIO6,
+	RDC_PER_GPIO7,
+	RDC_PER_KPP,
+	RDC_PER_WDOG1,
+	RDC_PER_WODG2,
+	RDC_PER_CCM,
+	RDC_PER_ANATOPDIG,
+	RDC_PER_SNVSHP,
+	RDC_PER_EPIT1,
+	RDC_PER_EPIT2,
+	RDC_PER_SRC,
+	RDC_PER_GPC,
+	RDC_PER_IOMUXC,
+	RDC_PER_IOMUXCGPR,
+	RDC_PER_CANFD1,
+	RDC_PER_SDMA,
+	RDC_PER_CANFD2,
+	RDC_PER_SEMA1,
+	RDC_PER_SEMA2,
+	RDC_PER_RDC,
+	RDC_PER_AIPSTZ1_GE1,
+	RDC_PER_AIPSTZ2_GE2,
+	RDC_PER_USBO2H_PL301,
+	RDC_PER_USBO2H_USB,
+	RDC_PER_ENET1,
+	RDC_PER_MLB25,
+	RDC_PER_USDHC1,
+	RDC_PER_USDHC2,
+	RDC_PER_USDHC3,
+	RDC_PER_USDHC4,
+	RDC_PER_I2C1,
+	RDC_PER_I2C2,
+	RDC_PER_I2C3,
+	RDC_PER_ROMCP,
+	RDC_PER_MMDC,
+	RDC_PER_ENET2,
+	RDC_PER_EIM,
+	RDC_PER_OCOTP,
+	RDC_PER_CSU,
+	RDC_PER_PERFMON1,
+	RDC_PER_PERFMON2,
+	RDC_PER_AXIMON,
+	RDC_PER_TZASC1,
+	RDC_PER_SAI1,
+	RDC_PER_AUDMUX,
+	RDC_PER_SAI2,
+	RDC_PER_QSPI1,
+	RDC_PER_QSPI2,
+	RDC_PER_UART2,
+	RDC_PER_UART3,
+	RDC_PER_UART4,
+	RDC_PER_UART5,
+	RDC_PER_I2C4,
+	RDC_PER_QOSC,
+	RDC_PER_CAAM,
+	RDC_PER_DAP,
+	RDC_PER_ADC1,
+	RDC_PER_ADC2,
+	RDC_PER_WDOG3,
+	RDC_PER_ECSPI5,
+	RDC_PER_SEMA4,
+	RDC_PER_MUPORT1,
+	RDC_PER_CANFD_CPU,
+	RDC_PER_MUPORT2,
+	RDC_PER_UART6,
+	RDC_PER_PWM5,
+	RDC_PER_PWM6,
+	RDC_PER_PWM7,
+	RDC_PER_PWM8,
+	RDC_PER_AIPSTZ3_GE0,
+	RDC_PER_AIPSTZ3_GE1,
+	RDC_PER_RESERVED1,
+	RDC_PER_SPDIF,
+	RDC_PER_ECSPI1,
+	RDC_PER_ECSPI2,
+	RDC_PER_ECSPI3,
+	RDC_PER_ECSPI4,
+	RDC_PER_RESERVED2,
+	RDC_PER_RESERVED3,
+	RDC_PER_UART1,
+	RDC_PER_ESAI,
+	RDC_PER_SSI1,
+	RDC_PER_SSI2,
+	RDC_PER_SSI3,
+	RDC_PER_ASRC,
+	RDC_PER_RESERVED4,
+	RDC_PER_SPBA_MA,
+	RDC_PER_GIS,
+	RDC_PER_DCIC1,
+	RDC_PER_DCIC2,
+	RDC_PER_CSI1,
+	RDC_PER_PXP,
+	RDC_PER_CSI2,
+	RDC_PER_LCDIF1,
+	RDC_PER_LCDIF2,
+	RDC_PER_VADC,
+	RDC_PER_VDEC,
+	RDC_PER_SPBA_DISPLAYMIX,
+};
+
+enum {
+	RDC_MA_A9_L2CACHE = 0,
+	RDC_MA_M4,
+	RDC_MA_GPU,
+	RDC_MA_CSI1,
+	RDC_MA_CSI2,
+	RDC_MA_LCDIF1,
+	RDC_MA_LCDIF2,
+	RDC_MA_PXP,
+	RDC_MA_PCIE_CTRL,
+	RDC_MA_DAP,
+	RDC_MA_CAAM,
+	RDC_MA_SDMA_PERI,
+	RDC_MA_SDMA_BURST,
+	RDC_MA_APBHDMA,
+	RDC_MA_RAWNAND,
+	RDC_MA_USDHC1,
+	RDC_MA_USDHC2,
+	RDC_MA_USDHC3,
+	RDC_MA_USDHC4,
+	RDC_MA_USB,
+	RDC_MA_MLB,
+	RDC_MA_TEST,
+	RDC_MA_ENET1_TX,
+	RDC_MA_ENET1_RX,
+	RDC_MA_ENET2_TX,
+	RDC_MA_ENET2_RX,
+	RDC_MA_SDMA,
+};
+
+#endif	/* __MX6SX_RDC_H__*/
-- 
2.6.2

[U-Boot] [PATCH V2 04/11] imx: mx7d: Add RDC support

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Add the peripherals/masters definitions and registers base addresses
for mx7d RDC.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 arch/arm/include/asm/arch-mx7/imx-rdc.h  |  16 +++
 arch/arm/include/asm/arch-mx7/imx-regs.h |   3 +
 arch/arm/include/asm/arch-mx7/mx7d_rdc.h | 163 +++++++++++++++++++++++++++++++
 3 files changed, 182 insertions(+)
 create mode 100644 arch/arm/include/asm/arch-mx7/imx-rdc.h
 create mode 100644 arch/arm/include/asm/arch-mx7/mx7d_rdc.h

diff --git a/arch/arm/include/asm/arch-mx7/imx-rdc.h b/arch/arm/include/asm/arch-mx7/imx-rdc.h
new file mode 100644
index 0000000..dbeed56
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7/imx-rdc.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+
+#ifndef __IMX_RDC_H__
+#define __IMX_RDC_H__
+
+#if defined(CONFIG_MX7D)
+#include "mx7d_rdc.h"
+#else
+#error "Please select cpu"
+#endif	/* CONFIG_MX7D */
+
+#endif	/* __IMX_RDC_H__*/
diff --git a/arch/arm/include/asm/arch-mx7/imx-regs.h b/arch/arm/include/asm/arch-mx7/imx-regs.h
index 58a25c7..8e66d3d 100644
--- a/arch/arm/include/asm/arch-mx7/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx7/imx-regs.h
@@ -212,6 +212,9 @@
 #define DEBUG_MONITOR_BASE_ADDR IP2APB_AXIMON_IPS_BASE_ADDR
 
 #define USB_BASE_ADDR USBOTG1_IPS_BASE_ADDR
+#define SEMAPHORE1_BASE_ADDR SEMA41_IPS_BASE_ADDR
+#define SEMAPHORE2_BASE_ADDR SEMA42_IPS_BASE_ADDR
+#define RDC_BASE_ADDR RDC_IPS_BASE_ADDR
 
 #define FEC_QUIRK_ENET_MAC
 #define SNVS_LPGPR	0x68
diff --git a/arch/arm/include/asm/arch-mx7/mx7d_rdc.h b/arch/arm/include/asm/arch-mx7/mx7d_rdc.h
new file mode 100644
index 0000000..9073cbd
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7/mx7d_rdc.h
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:  GPL-2.0+
+ */
+
+#ifndef __MX7D_RDC_H__
+#define __MX7D_RDC_H__
+
+#define RDC_SEMA_PROC_ID 2  /* The processor ID for main CPU */
+
+enum {
+	RDC_PER_GPIO1 = 0,
+	RDC_PER_GPIO2,
+	RDC_PER_GPIO3,
+	RDC_PER_GPIO4,
+	RDC_PER_GPIO5,
+	RDC_PER_GPIO6,
+	RDC_PER_GPIO7,
+	RDC_PER_IOMUXC_LPSR_GPR,
+	RDC_PER_WDOG1,
+	RDC_PER_WDOG2,
+	RDC_PER_WDOG3,
+	RDC_PER_WDOG4,
+	RDC_PER_IOMUXC_LPSR,
+	RDC_PER_GPT1,
+	RDC_PER_GPT2,
+	RDC_PER_GPT3,
+	RDC_PER_GPT4,
+	RDC_PER_ROMCP,
+	RDC_PER_KPP,
+	RDC_PER_IOMUXC,
+	RDC_PER_IOMUXCGPR,
+	RDC_PER_OCOTP,
+	RDC_PER_ANATOP_DIG,
+	RDC_PER_SNVS_HP,
+	RDC_PER_CCM,
+	RDC_PER_SRC,
+	RDC_PER_GPC,
+	RDC_PER_SEMA1,
+	RDC_PER_SEMA2,
+	RDC_PER_RDC,
+	RDC_PER_CSU,
+	RDC_PER_RESERVED1,
+	RDC_PER_RESERVED2,
+	RDC_PER_ADC1,
+	RDC_PER_ADC2,
+	RDC_PER_ECSPI4,
+	RDC_PER_FLEX_TIMER1,
+	RDC_PER_FLEX_TIMER2,
+	RDC_PER_PWM1,
+	RDC_PER_PWM2,
+	RDC_PER_PWM3,
+	RDC_PER_PWM4,
+	RDC_PER_SYSTEM_COUNTER_READ,
+	RDC_PER_SYSTEM_COUNTER_COMPARE,
+	RDC_PER_SYSTEM_COUNTER_CONTROL,
+	RDC_PER_PCIE_PHY,
+	RDC_PER_RESERVED3,
+	RDC_PER_EPDC,
+	RDC_PER_PXP,
+	RDC_PER_CSI,
+	RDC_PER_RESERVED4,
+	RDC_PER_LCDIF,
+	RDC_PER_RESERVED5,
+	RDC_PER_MIPI_CSI,
+	RDC_PER_MIPI_DSI,
+	RDC_PER_RESERVED6,
+	RDC_PER_TZASC,
+	RDC_PER_DDR_PHY,
+	RDC_PER_DDRC,
+	RDC_PER_RESERVED7,
+	RDC_PER_PERFMON1,
+	RDC_PER_PERFMON2,
+	RDC_PER_AXI_DEBUG_MON,
+	RDC_PER_QOSC,
+	RDC_PER_FLEXCAN1,
+	RDC_PER_FLEXCAN2,
+	RDC_PER_I2C1,
+	RDC_PER_I2C2,
+	RDC_PER_I2C3,
+	RDC_PER_I2C4,
+	RDC_PER_UART4,
+	RDC_PER_UART5,
+	RDC_PER_UART6,
+	RDC_PER_UART7,
+	RDC_PER_MU_A,
+	RDC_PER_MU_B,
+	RDC_PER_SEMAPHORE_HS,
+	RDC_PER_USB_PL301,
+	RDC_PER_RESERVED8,
+	RDC_PER_RESERVED9,
+	RDC_PER_RESERVED10,
+	RDC_PER_USB1,
+	RDC_PER_USB2,
+	RDC_PER_USB3,
+	RDC_PER_USDHC1,
+	RDC_PER_USDHC2,
+	RDC_PER_USDHC3,
+	RDC_PER_RESERVED11,
+	RDC_PER_RESERVED12,
+	RDC_PER_SIM1,
+	RDC_PER_SIM2,
+	RDC_PER_QSPI,
+	RDC_PER_WEIM,
+	RDC_PER_SDMA,
+	RDC_PER_ENET1,
+	RDC_PER_ENET2,
+	RDC_PER_RESERVED13,
+	RDC_PER_RESERVED14,
+	RDC_PER_ECSPI1,
+	RDC_PER_ECSPI2,
+	RDC_PER_ECSPI3,
+	RDC_PER_RESERVED15,
+	RDC_PER_UART1,
+	RDC_PER_UART2,
+	RDC_PER_UART3,
+	RDC_PER_RESERVED16,
+	RDC_PER_SAI1,
+	RDC_PER_SAI2,
+	RDC_PER_SAI3,
+	RDC_PER_RESERVED17,
+	RDC_PER_RESERVED18,
+	RDC_PER_SPBA,
+	RDC_PER_DAP,
+	RDC_PER_RESERVED19,
+	RDC_PER_RESERVED20,
+	RDC_PER_RESERVED21,
+	RDC_PER_CAAM,
+	RDC_PER_RESERVED22,
+};
+
+enum {
+	RDC_MA_A7 = 0,
+	RDC_MA_M4,
+	RDC_MA_PCIE,
+	RDC_MA_CSI,
+	RDC_MA_EPDC,
+	RDC_MA_LCDIF,
+	RDC_MA_DISPLAY_PORT,
+	RDC_MA_PXP,
+	RDC_MA_CORESIGHT,
+	RDC_MA_DAP,
+	RDC_MA_CAAM,
+	RDC_MA_SDMA_PERI,
+	RDC_MA_SDMA_BURST,
+	RDC_MA_APBHDMA,
+	RDC_MA_RAWNAND,
+	RDC_MA_USDHC1,
+	RDC_MA_USDHC2,
+	RDC_MA_USDHC3,
+	RDC_MA_NC1,
+	RDC_MA_USB,
+	RDC_MA_NC2,
+	RDC_MA_TEST,
+	RDC_MA_ENET1_TX,
+	RDC_MA_ENET1_RX,
+	RDC_MA_ENET2_TX,
+	RDC_MA_ENET2_RX,
+	RDC_MA_SDMA,
+};
+
+#endif	/* __MX7D_RDC_H__*/
-- 
2.6.2

[U-Boot] [PATCH V2 05/11] imx: mx7d: clock support for RDC

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

If CONFIG_IMX_RDC is enabled, enable clock for RDC and SEMAPHORE.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2: no change

 arch/arm/cpu/armv7/mx7/clock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/cpu/armv7/mx7/clock.c b/arch/arm/cpu/armv7/mx7/clock.c
index 77db6e8..4d68ad2 100644
--- a/arch/arm/cpu/armv7/mx7/clock.c
+++ b/arch/arm/cpu/armv7/mx7/clock.c
@@ -1067,6 +1067,12 @@ void clock_init(void)
 #ifdef CONFIG_NAND_MXS
 	clock_enable(CCGR_RAWNAND, 1);
 #endif
+
+	if (IS_ENABLED(CONFIG_IMX_RDC)) {
+		clock_enable(CCGR_RDC, 1);
+		clock_enable(CCGR_SEMA1, 1);
+		clock_enable(CCGR_SEMA2, 1);
+	}
 }
 
 #ifdef CONFIG_SECURE_BOOT
-- 
2.6.2

[U-Boot] [PATCH V2 06/11] imx: imx-common: introduce boot auxiliary core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

To boot a auxiliary core in asymmetric multicore system, introduce the
new command "bootaux" to do it. Example of boot auxliary core from
0x70000000 where stores the boot head information that should be
parsed by auxiliary core, "bootaux 0x70000000".
Introduce Kconfig option IMX_BOOTAUX.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
  add more comments for bootaux command

 arch/arm/imx-common/Kconfig       |  6 ++++
 arch/arm/imx-common/Makefile      |  1 +
 arch/arm/imx-common/imx_bootaux.c | 72 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 arch/arm/imx-common/imx_bootaux.c

diff --git a/arch/arm/imx-common/Kconfig b/arch/arm/imx-common/Kconfig
index c4f48bb..1b7da5a 100644
--- a/arch/arm/imx-common/Kconfig
+++ b/arch/arm/imx-common/Kconfig
@@ -11,3 +11,9 @@ config IMX_RDC
 	  i.MX Resource domain controller is used to assign masters
 	  and peripherals to differet domains. This can be used to
 	  isolate resources.
+
+config IMX_BOOTAUX
+	bool "Support boot auxiliary core"
+	depends on ARCH_MX7 || ARCH_MX6
+	help
+	  bootaux [addr] to boot auxiliary core.
diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index 568f41c..30e66ba 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -28,6 +28,7 @@ obj-y 	+= cache.o init.o
 obj-$(CONFIG_CMD_SATA) += sata.o
 obj-$(CONFIG_IMX_VIDEO_SKIP) += video.o
 obj-$(CONFIG_IMX_RDC) += rdc-sema.o
+obj-$(CONFIG_IMX_BOOTAUX) += imx_bootaux.o
 obj-$(CONFIG_SECURE_BOOT)    += hab.o
 endif
 ifeq ($(SOC),$(filter $(SOC),vf610))
diff --git a/arch/arm/imx-common/imx_bootaux.c b/arch/arm/imx-common/imx_bootaux.c
new file mode 100644
index 0000000..69026df
--- /dev/null
+++ b/arch/arm/imx-common/imx_bootaux.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+
+/* Allow for arch specific config before we boot */
+static int __arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+{
+	/* please define platform specific arch_auxiliary_core_up() */
+	return CMD_RET_FAILURE;
+}
+
+int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+	__attribute__((weak, alias("__arch_auxiliary_core_up")));
+
+/* Allow for arch specific config before we boot */
+static int __arch_auxiliary_core_check_up(u32 core_id)
+{
+	/* please define platform specific arch_auxiliary_core_check_up() */
+	return 0;
+}
+
+int arch_auxiliary_core_check_up(u32 core_id)
+	__attribute__((weak, alias("__arch_auxiliary_core_check_up")));
+
+/*
+ * To i.MX6SX and i.MX7D, the image supported by bootaux needs
+ * the reset vector at the head for the image, with SP and PC
+ * as the first two words.
+ *
+ * Per the cortex-M reference manual, the reset vector of M4 needs
+ * to exist at 0x0 (TCMUL). The PC and SP are the first two addresses
+ * of that vector.  So to boot M4, the A core must build the M4's reset
+ * vector with getting the PC and SP from image and filling them to
+ * TCMUL. When M4 is kicked, it will load the PC and SP by itself.
+ * The TCMUL is mapped to (M4_BOOTROM_BASE_ADDR) at A core side for
+ * accessing the M4 TCMUL.
+ */
+int do_bootaux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	ulong addr;
+	int ret, up;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	up = arch_auxiliary_core_check_up(0);
+	if (up) {
+		printf("## Auxiliary core is already up\n");
+		return CMD_RET_SUCCESS;
+	}
+
+	addr = simple_strtoul(argv[1], NULL, 16);
+
+	printf("## Starting auxiliary core@0x%08lX ...\n", addr);
+
+	ret = arch_auxiliary_core_up(0, addr);
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+	bootaux, CONFIG_SYS_MAXARGS, 1,	do_bootaux,
+	"Start auxiliary core",
+	""
+);
-- 
2.6.2

[U-Boot] [PATCH V2 07/11] imx: mx6: implement functions to boot auxiliary core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Implement arch_auxiliary_core_up and arch_auxiliary_core_check_up.

arch_auxiliary_core_check_up is used to check whether M4 is running
or not. arch_auxiliary_core_up is to boot M4 core, the m4 core will
use the pc and stack which is set in arch_auxiliary_core_up to set R15
and R13 register and boot.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 arch/arm/cpu/armv7/mx6/soc.c             | 38 ++++++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx6/imx-regs.h |  5 +++++
 2 files changed, 43 insertions(+)

diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index bf5ae8c..ab0ccb0 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -491,3 +491,41 @@ void imx_setup_hdmi(void)
 	writel(reg, &mxc_ccm->chsccdr);
 }
 #endif
+
+#ifdef CONFIG_IMX_BOOTAUX
+int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+{
+	struct src *src_reg;
+	u32 stack, pc;
+
+	if (!boot_private_data)
+		return -EINVAL;
+
+	stack = *(u32 *)boot_private_data;
+	pc = *(u32 *)(boot_private_data + 4);
+
+	/* Set the stack and pc to M4 bootROM */
+	writel(stack, M4_BOOTROM_BASE_ADDR);
+	writel(pc, M4_BOOTROM_BASE_ADDR + 4);
+
+	/* Enable M4 */
+	src_reg = (struct src *)SRC_BASE_ADDR;
+	clrsetbits_le32(&src_reg->scr, SRC_SCR_M4C_NON_SCLR_RST_MASK,
+			SRC_SCR_M4_ENABLE_MASK);
+
+	return 0;
+}
+
+int arch_auxiliary_core_check_up(u32 core_id)
+{
+	struct src *src_reg = (struct src *)SRC_BASE_ADDR;
+	unsigned val;
+
+	val = readl(&src_reg->scr);
+
+	if (val & SRC_SCR_M4C_NON_SCLR_RST_MASK)
+		return 0;  /* assert in reset */
+
+	return 1;
+}
+#endif
diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h
index b1de751..f5ce31c 100644
--- a/arch/arm/include/asm/arch-mx6/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx6/imx-regs.h
@@ -438,6 +438,11 @@ struct src {
 	u32     gpr10;
 };
 
+#define SRC_SCR_M4_ENABLE_OFFSET                22
+#define SRC_SCR_M4_ENABLE_MASK                  (1 << 22)
+#define SRC_SCR_M4C_NON_SCLR_RST_OFFSET         4
+#define SRC_SCR_M4C_NON_SCLR_RST_MASK           (1 << 4)
+
 /* GPR1 bitfields */
 #define IOMUXC_GPR1_APP_CLK_REQ_N		BIT(30)
 #define IOMUXC_GPR1_PCIE_EXIT_L1		BIT(28)
-- 
2.6.2

[U-Boot] [PATCH V2 08/11] imx: mx6sxsabresd: add command and macros for boot m4 core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Introduce macros and command to support booting M4 core for
i.MX6SX SabreSD board.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 include/configs/mx6sxsabresd.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index 0aec296..325e470 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -26,7 +26,31 @@
 #define CONFIG_MXC_UART
 #define CONFIG_MXC_UART_BASE		UART1_BASE
 
+#ifdef CONFIG_IMX_BOOTAUX
+/* Set to QSPI2 B flash at default */
+#define CONFIG_SYS_AUXCORE_BOOTDATA 0x78000000
+#define CONFIG_CMD_SETEXPR
+
+#define UPDATE_M4_ENV \
+	"m4image=m4_qspi.bin\0" \
+	"loadm4image=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${m4image}\0" \
+	"update_m4_from_sd=" \
+		"if sf probe 1:0; then " \
+			"if run loadm4image; then " \
+				"setexpr fw_sz ${filesize} + 0xffff; " \
+				"setexpr fw_sz ${fw_sz} / 0x10000; "	\
+				"setexpr fw_sz ${fw_sz} * 0x10000; "	\
+				"sf erase 0x0 ${fw_sz}; " \
+				"sf write ${loadaddr} 0x0 ${filesize}; " \
+			"fi; " \
+		"fi\0" \
+	"m4boot=sf probe 1:0; bootaux "__stringify(CONFIG_SYS_AUXCORE_BOOTDATA)"\0"
+#else
+#define UPDATE_M4_ENV ""
+#endif
+
 #define CONFIG_EXTRA_ENV_SETTINGS \
+	UPDATE_M4_ENV \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"console=ttymxc0\0" \
-- 
2.6.2

[U-Boot] [PATCH V2 09/11] imx: mx7: implement functions to boot auxiliary core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Implement arch_auxiliary_core_up and arch_auxiliary_core_check_up.

arch_auxiliary_core_check_up is used to check whether M4 is running
or not. arch_auxiliary_core_up is to boot M4 core, the m4 core will
use the pc and stack which is set in arch_auxiliary_core_up to set R15
and R13 register and boot.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 arch/arm/cpu/armv7/mx7/soc.c             | 36 ++++++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx7/imx-regs.h |  5 +++++
 2 files changed, 41 insertions(+)

diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c
index 1d8e470..2121ff2 100644
--- a/arch/arm/cpu/armv7/mx7/soc.c
+++ b/arch/arm/cpu/armv7/mx7/soc.c
@@ -211,6 +211,42 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 }
 #endif
 
+#ifdef CONFIG_IMX_BOOTAUX
+int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+{
+	u32 stack, pc;
+	struct src *src_reg = (struct src *)SRC_BASE_ADDR;
+
+	if (!boot_private_data)
+		return 1;
+
+	stack = *(u32 *)boot_private_data;
+	pc = *(u32 *)(boot_private_data + 4);
+
+	/* Set the stack and pc to M4 bootROM */
+	writel(stack, M4_BOOTROM_BASE_ADDR);
+	writel(pc, M4_BOOTROM_BASE_ADDR + 4);
+
+	/* Enable M4 */
+	clrsetbits_le32(&src_reg->m4rcr, SRC_M4RCR_M4C_NON_SCLR_RST_MASK,
+			SRC_M4RCR_ENABLE_M4_MASK);
+
+	return 0;
+}
+
+int arch_auxiliary_core_check_up(u32 core_id)
+{
+	uint32_t val;
+	struct src *src_reg = (struct src *)SRC_BASE_ADDR;
+
+	val = readl(&src_reg->m4rcr);
+	if (val & 0x00000001)
+		return 0; /* assert in reset */
+
+	return 1;
+}
+#endif
+
 void set_wdog_reset(struct wdog_regs *wdog)
 {
 	u32 reg = readw(&wdog->wcr);
diff --git a/arch/arm/include/asm/arch-mx7/imx-regs.h b/arch/arm/include/asm/arch-mx7/imx-regs.h
index 8e66d3d..5253b1e 100644
--- a/arch/arm/include/asm/arch-mx7/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx7/imx-regs.h
@@ -260,6 +260,11 @@ struct src {
 	u32 ddrc_rcr;
 };
 
+#define SRC_M4RCR_M4C_NON_SCLR_RST_OFFSET	0
+#define SRC_M4RCR_M4C_NON_SCLR_RST_MASK		(1 << 0)
+#define SRC_M4RCR_ENABLE_M4_OFFSET		3
+#define SRC_M4RCR_ENABLE_M4_MASK		(1 << 3)
+
 /* GPR0 Bit Fields */
 #define IOMUXC_GPR_GPR0_DMAREQ_MUX_SEL0_MASK     0x1u
 #define IOMUXC_GPR_GPR0_DMAREQ_MUX_SEL0_SHIFT    0
-- 
2.6.2

[U-Boot] [PATCH V2 10/11] imx: mx7dsabresd: add command and macros for boot m4 core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

Introduce macros and command to support booting M4 core for
i.MX7D SabreSD board.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 no change

 include/configs/mx7dsabresd.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/configs/mx7dsabresd.h b/include/configs/mx7dsabresd.h
index d23e4f3..2c981e0 100644
--- a/include/configs/mx7dsabresd.h
+++ b/include/configs/mx7dsabresd.h
@@ -57,6 +57,29 @@
 #define CONFIG_SUPPORT_EMMC_BOOT	/* eMMC specific */
 #define CONFIG_SYS_MMC_IMG_LOAD_PART	1
 
+#ifdef CONFIG_IMX_BOOTAUX
+/* Set to QSPI1 A flash at default */
+#define CONFIG_SYS_AUXCORE_BOOTDATA 0x60000000
+#define CONFIG_CMD_SETEXPR
+
+#define UPDATE_M4_ENV \
+	"m4image=m4_qspi.bin\0" \
+	"loadm4image=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${m4image}\0" \
+	"update_m4_from_sd=" \
+		"if sf probe 0:0; then " \
+			"if run loadm4image; then " \
+				"setexpr fw_sz ${filesize} + 0xffff; " \
+				"setexpr fw_sz ${fw_sz} / 0x10000; "	\
+				"setexpr fw_sz ${fw_sz} * 0x10000; "	\
+				"sf erase 0x0 ${fw_sz}; " \
+				"sf write ${loadaddr} 0x0 ${filesize}; " \
+			"fi; " \
+		"fi\0" \
+	"m4boot=sf probe 0:0; bootaux "__stringify(CONFIG_SYS_AUXCORE_BOOTDATA)"\0"
+#else
+#define UPDATE_M4_ENV ""
+#endif
+
 #define CONFIG_MFG_ENV_SETTINGS \
 	"mfgtool_args=setenv bootargs console=${console},${baudrate} " \
 		"rdinit=/linuxrc " \
@@ -76,6 +99,7 @@
 		"rootfs part 0 2\0" \
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
+	UPDATE_M4_ENV \
 	CONFIG_MFG_ENV_SETTINGS \
 	CONFIG_DFU_ENV_SETTINGS \
 	"script=boot.scr\0" \
-- 
2.6.2

[U-Boot] [PATCH V2 11/11] imx: mx7d: isolate resources to domain 0 for A7 core

[Peng Fan]

From: Peng Fan <peng.fan@nxp.com>

In current design, if any peripheral was assigned to both A7 and M4,
it will receive ipg_stop or ipg_wait when any of the 2 platforms
enter low power mode. We will have a risk that, if A7 enter wait,
M4 enter stop, peripheral will have chance to get ipg_stop and ipg_wait
asserted same time. Also if M4 enters stop mode, A7 will have no
chance to access the peripheral.
There are 26 peripherals affected by this IC issue:
SIM2(sim2/emvsim2)
SIM1(sim1/emvsim1)
UART1/UART2/UART3/UART4/UART5/UART6/UART7
SAI1/SAI2/SAI3
WDOG1/WDOG2/WDOG3/WDOG4
GPT1/GPT2/GPT3/GPT4
PWM1/PWM2/PWM3/PWM4
ENET1/ENET2
Software Workaround:
The solution is to set the peripherals to Domain0 by A core, since A core
in Domain0. The peripherals which will be used by M4, will be set to Domain1
by M4.
For example, A core set WDOG4 to domain0, but when M4 boots up, M4 will
set WDOG4 to domain1, because M4 will use WDOG4.

So the peripherals are not shared by them. This way requires
the uboot implemented the RDC driver and set the 26 IPs above
to domain 0 only. M4 image will set the M4 to domain 1 and
set peripheral which it will use to domain 1.

This patch enables the CONFIG_IMX_RDC and CONFIG_IMX_BOOTAUX for
i.MX7D SABRESD board, and setup the 26 IP resources to domain 0.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

V2:
 update commit log

 arch/arm/cpu/armv7/mx7/soc.c  | 64 +++++++++++++++++++++++++++++++++++++++++++
 configs/mx7dsabresd_defconfig |  2 ++
 2 files changed, 66 insertions(+)

diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c
index 2121ff2..ede7d53 100644
--- a/arch/arm/cpu/armv7/mx7/soc.c
+++ b/arch/arm/cpu/armv7/mx7/soc.c
@@ -12,6 +12,8 @@
 #include <asm/imx-common/boot_mode.h>
 #include <asm/imx-common/dma.h>
 #include <asm/imx-common/hab.h>
+#include <asm/imx-common/rdc-sema.h>
+#include <asm/arch/imx-rdc.h>
 #include <asm/arch/crm_regs.h>
 #include <dm.h>
 #include <imx_thermal.h>
@@ -29,6 +31,65 @@ U_BOOT_DEVICE(imx7_thermal) = {
 };
 #endif
 
+#ifdef CONFIG_IMX_RDC
+/*
+ * In current design, if any peripheral was assigned to both A7 and M4,
+ * it will receive ipg_stop or ipg_wait when any of the 2 platforms enter
+ * low power mode. So M4 sleep will cause some peripherals fail to work
+ * at A7 core side. At default, all resources are in domain 0 - 3.
+ *
+ * There are 26 peripherals impacted by this IC issue:
+ * SIM2(sim2/emvsim2)
+ * SIM1(sim1/emvsim1)
+ * UART1/UART2/UART3/UART4/UART5/UART6/UART7
+ * SAI1/SAI2/SAI3
+ * WDOG1/WDOG2/WDOG3/WDOG4
+ * GPT1/GPT2/GPT3/GPT4
+ * PWM1/PWM2/PWM3/PWM4
+ * ENET1/ENET2
+ * Software Workaround:
+ * Here we setup some resources to domain 0 where M4 codes will move
+ * the M4 out of this domain. Then M4 is not able to access them any longer.
+ * This is a workaround for ic issue. So the peripherals are not shared
+ * by them. This way requires the uboot implemented the RDC driver and
+ * set the 26 IPs above to domain 0 only. M4 code will assign resource
+ * to its own domain, if it want to use the resource.
+ */
+static rdc_peri_cfg_t const resources[] = {
+	(RDC_PER_SIM1 | RDC_DOMAIN(0)),
+	(RDC_PER_SIM2 | RDC_DOMAIN(0)),
+	(RDC_PER_UART1 | RDC_DOMAIN(0)),
+	(RDC_PER_UART2 | RDC_DOMAIN(0)),
+	(RDC_PER_UART3 | RDC_DOMAIN(0)),
+	(RDC_PER_UART4 | RDC_DOMAIN(0)),
+	(RDC_PER_UART5 | RDC_DOMAIN(0)),
+	(RDC_PER_UART6 | RDC_DOMAIN(0)),
+	(RDC_PER_UART7 | RDC_DOMAIN(0)),
+	(RDC_PER_SAI1 | RDC_DOMAIN(0)),
+	(RDC_PER_SAI2 | RDC_DOMAIN(0)),
+	(RDC_PER_SAI3 | RDC_DOMAIN(0)),
+	(RDC_PER_WDOG1 | RDC_DOMAIN(0)),
+	(RDC_PER_WDOG2 | RDC_DOMAIN(0)),
+	(RDC_PER_WDOG3 | RDC_DOMAIN(0)),
+	(RDC_PER_WDOG4 | RDC_DOMAIN(0)),
+	(RDC_PER_GPT1 | RDC_DOMAIN(0)),
+	(RDC_PER_GPT2 | RDC_DOMAIN(0)),
+	(RDC_PER_GPT3 | RDC_DOMAIN(0)),
+	(RDC_PER_GPT4 | RDC_DOMAIN(0)),
+	(RDC_PER_PWM1 | RDC_DOMAIN(0)),
+	(RDC_PER_PWM2 | RDC_DOMAIN(0)),
+	(RDC_PER_PWM3 | RDC_DOMAIN(0)),
+	(RDC_PER_PWM4 | RDC_DOMAIN(0)),
+	(RDC_PER_ENET1 | RDC_DOMAIN(0)),
+	(RDC_PER_ENET2 | RDC_DOMAIN(0)),
+};
+
+static void isolate_resource(void)
+{
+	imx_rdc_setup_peripherals(resources, ARRAY_SIZE(resources));
+}
+#endif
+
 #if defined(CONFIG_SECURE_BOOT)
 struct imx_sec_config_fuse_t const imx_sec_config_fuse = {
 	.bank = 1,
@@ -163,6 +224,9 @@ int arch_cpu_init(void)
 	mxs_dma_init();
 #endif
 
+	if (IS_ENABLED(CONFIG_IMX_RDC))
+		isolate_resource();
+
 	return 0;
 }
 
diff --git a/configs/mx7dsabresd_defconfig b/configs/mx7dsabresd_defconfig
index 420d13e..1d262c1 100644
--- a/configs/mx7dsabresd_defconfig
+++ b/configs/mx7dsabresd_defconfig
@@ -1,6 +1,8 @@
 CONFIG_ARM=y
 CONFIG_ARCH_MX7=y
 CONFIG_TARGET_MX7DSABRESD=y
+CONFIG_IMX_RDC=y
+CONFIG_IMX_BOOTAUX=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx7dsabresd/imximage.cfg,MX7D"
 # CONFIG_CMD_BOOTD is not set
 # CONFIG_CMD_IMI is not set
-- 
2.6.2

[U-Boot] [PATCH V2 00/11] imx: introduce rdc and boot auxiliary core

[Stefano Babic]

Hi Peng,

On 28/01/2016 09:54, Peng Fan wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> To i.MX6SX and i.MX7D, there is a M4 core embedded. Resources
> can be shared or occupied exclusively by setting Resource
> domain controller between A9/7 core and M4 core.
> 
> Refer "Chapter 52 Resource Domain Controller (RDC)" of i.MX 6SoloX
> RM and "Chapter 3.2 Resource Domain Controller (RDC)" of i.MX 7Dual RM
> for detailed infomation.
> 
> To bootup M4 core, a new command 'bootaux' is introduced. To i.MX7D,
> we need to setting RDC when booting M4 core, so make RDC and boot
> auxiliary core patches into one patch set.
> 

I applied the whole series - maybe in future we can think about to make
"bootaux" available to other SOCs, too. At the moment, it remains i.MX
specific code and I do not see any reason to do it now - just to note it.

> Since we also sometimes put the M4 image in QSPI to let M4 directly fecth
> code in the memory mapped QSPI space, we can not support such as libz
> compressed image.
> 
> Peng Fan (11):
>   imx: mx6: introduce rdc regs
>   imx: imx-common: introduce Resource Domain Controller support
>   imx: mx6sx Add RDC mappings of masters and peripherals
>   imx: mx7d: Add RDC support
>   imx: mx7d: clock support for RDC
>   imx: imx-common: introduce boot auxiliary core
>   imx: mx6: implement functions to boot auxiliary core
>   imx: mx6sxsabresd: add command and macros for boot m4 core
>   imx: mx7: implement functions to boot auxiliary core
>   imx: mx7dsabresd: add command and macros for boot m4 core
>   imx: mx7d: isolate resources to domain 0 for A7 core
> 

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic

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