Signed-off-by: Apurva Nandan <a-nan...@ti.com>
Signed-off-by: Bryan Bratloff <b...@ti.com>
Signed-off-by: Nishant Menon <n...@ti.com>
Signed-off-by: Hari Nagalla <hnaga...@ti.com>
---
 arch/arm/mach-k3/Kconfig                      |  16 +-
 arch/arm/mach-k3/Makefile                     |   2 +
 arch/arm/mach-k3/arm64-mmu.c                  |  41 +++
 arch/arm/mach-k3/include/mach/hardware.h      |   4 +
 .../mach-k3/include/mach/j784s4_hardware.h    |  41 +++
 arch/arm/mach-k3/include/mach/j784s4_spl.h    |  46 +++
 arch/arm/mach-k3/include/mach/spl.h           |   6 +-
 arch/arm/mach-k3/j784s4/Makefile              |   5 +
 arch/arm/mach-k3/j784s4/dev-data.c            |  97 ++++++
 arch/arm/mach-k3/j784s4_init.c                | 319 ++++++++++++++++++
 board/ti/j784s4/j784s4.env                    | 108 ++++++
 include/configs/j784s4_evm.h                  |  49 +++
 12 files changed, 727 insertions(+), 7 deletions(-)
 create mode 100644 arch/arm/mach-k3/include/mach/j784s4_hardware.h
 create mode 100644 arch/arm/mach-k3/include/mach/j784s4_spl.h
 create mode 100644 arch/arm/mach-k3/j784s4/Makefile
 create mode 100644 arch/arm/mach-k3/j784s4/dev-data.c
 create mode 100644 arch/arm/mach-k3/j784s4_init.c
 create mode 100644 board/ti/j784s4/j784s4.env
 create mode 100644 include/configs/j784s4_evm.h

diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig
index a8c3a593d5..3a9be0a590 100644
--- a/arch/arm/mach-k3/Kconfig
+++ b/arch/arm/mach-k3/Kconfig
@@ -22,6 +22,9 @@ config SOC_K3_AM625
 config SOC_K3_AM62A7
        bool "TI's K3 based AM62A7 SoC Family Support"
 
+config SOC_K3_J784S4
+       bool "TI's K3 based J784S4 SoC Family Support"
+
 endchoice
 
 config SYS_SOC
@@ -30,7 +33,7 @@ config SYS_SOC
 config SYS_K3_NON_SECURE_MSRAM_SIZE
        hex
        default 0x80000 if SOC_K3_AM654
-       default 0x100000 if SOC_K3_J721E || SOC_K3_J721S2
+       default 0x100000 if SOC_K3_J721E || SOC_K3_J721S2 || SOC_K3_J784S4
        default 0x1c0000 if SOC_K3_AM642
        default 0x3c000 if SOC_K3_AM625 || SOC_K3_AM62A7
        help
@@ -42,7 +45,7 @@ config SYS_K3_NON_SECURE_MSRAM_SIZE
 config SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
        hex
        default 0x58000 if SOC_K3_AM654
-       default 0xc0000 if SOC_K3_J721E || SOC_K3_J721S2
+       default 0xc0000 if SOC_K3_J721E || SOC_K3_J721S2 || SOC_K3_J784S4
        default 0x180000 if SOC_K3_AM642
        default 0x38000 if SOC_K3_AM625 || SOC_K3_AM62A7
        help
@@ -52,14 +55,14 @@ config SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
 config SYS_K3_MCU_SCRATCHPAD_BASE
        hex
        default 0x40280000 if SOC_K3_AM654
-       default 0x40280000 if SOC_K3_J721E || SOC_K3_J721S2
+       default 0x40280000 if SOC_K3_J721E || SOC_K3_J721S2 || SOC_K3_J784S4
        help
          Describes the base address of MCU Scratchpad RAM.
 
 config SYS_K3_MCU_SCRATCHPAD_SIZE
        hex
        default 0x200 if SOC_K3_AM654
-       default 0x200 if SOC_K3_J721E || SOC_K3_J721S2
+       default 0x200 if SOC_K3_J721E || SOC_K3_J721S2 || SOC_K3_J784S4
        help
          Describes the size of MCU Scratchpad RAM.
 
@@ -67,7 +70,7 @@ config SYS_K3_BOOT_PARAM_TABLE_INDEX
        hex
        default 0x41c7fbfc if SOC_K3_AM654
        default 0x41cffbfc if SOC_K3_J721E
-       default 0x41cfdbfc if SOC_K3_J721S2
+       default 0x41cfdbfc if SOC_K3_J721S2 || SOC_K3_J784S4
        default 0x701bebfc if SOC_K3_AM642
        default 0x43c3f290 if SOC_K3_AM625
        default 0x43c3f290 if SOC_K3_AM62A7 && CPU_V7R
@@ -172,7 +175,7 @@ config K3_ATF_LOAD_ADDR
 
 config K3_DM_FW
        bool "Separate DM firmware image"
-       depends on SPL && CPU_V7R && (SOC_K3_J721E || SOC_K3_J721S2 || 
SOC_K3_AM625 || SOC_K3_AM62A7) && !CLK_TI_SCI && !TI_SCI_POWER_DOMAIN
+       depends on SPL && CPU_V7R && (SOC_K3_J721E || SOC_K3_J721S2 || 
SOC_K3_AM625 || SOC_K3_AM62A7 || SOC_K3_J784S4) && !CLK_TI_SCI && 
!TI_SCI_POWER_DOMAIN
        default y
        help
          Enabling this will indicate that the system has separate DM
@@ -194,4 +197,5 @@ source "board/ti/am62ax/Kconfig"
 source "board/ti/j721e/Kconfig"
 source "board/siemens/iot2050/Kconfig"
 source "board/ti/j721s2/Kconfig"
+source "board/ti/j784s4/Kconfig"
 endif
diff --git a/arch/arm/mach-k3/Makefile b/arch/arm/mach-k3/Makefile
index b5bc236781..14cf85ad38 100644
--- a/arch/arm/mach-k3/Makefile
+++ b/arch/arm/mach-k3/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_SOC_K3_J721E) += j721e/ j7200/
 obj-$(CONFIG_SOC_K3_J721S2) += j721s2/
 obj-$(CONFIG_SOC_K3_AM625) += am62x/
 obj-$(CONFIG_SOC_K3_AM62A7) += am62ax/
+obj-$(CONFIG_SOC_K3_J784S4) += j784s4/
 obj-$(CONFIG_ARM64) += arm64-mmu.o
 obj-$(CONFIG_CPU_V7R) += r5_mpu.o lowlevel_init.o
 obj-$(CONFIG_ARM64) += cache.o
@@ -17,6 +18,7 @@ obj-$(CONFIG_SOC_K3_J721S2) += j721s2_init.o
 obj-$(CONFIG_SOC_K3_AM642) += am642_init.o
 obj-$(CONFIG_SOC_K3_AM625) += am625_init.o
 obj-$(CONFIG_SOC_K3_AM62A7) += am62a7_init.o
+obj-$(CONFIG_SOC_K3_J784S4) += j784s4_init.o
 obj-$(CONFIG_K3_LOAD_SYSFW) += sysfw-loader.o
 endif
 obj-y += common.o security.o
diff --git a/arch/arm/mach-k3/arm64-mmu.c b/arch/arm/mach-k3/arm64-mmu.c
index 88687c2d09..610ff19696 100644
--- a/arch/arm/mach-k3/arm64-mmu.c
+++ b/arch/arm/mach-k3/arm64-mmu.c
@@ -264,3 +264,44 @@ struct mm_region am64_mem_map[NR_MMU_REGIONS] = {
 
 struct mm_region *mem_map = am64_mem_map;
 #endif /* CONFIG_SOC_K3_AM642 || CONFIG_SOC_K3_AM625 || CONFIG_SOC_K3_AM62A7 */
+
+#if defined(CONFIG_SOC_K3_J784S4)
+#define NR_MMU_REGIONS (CONFIG_NR_DRAM_BANKS + 3)
+
+/* ToDo: Add 64bit IO */
+struct mm_region j784s4_mem_map[NR_MMU_REGIONS] = {
+       {
+               .virt = 0x0UL,
+               .phys = 0x0UL,
+               .size = 0x80000000UL,
+               .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+                        PTE_BLOCK_NON_SHARE |
+                        PTE_BLOCK_PXN | PTE_BLOCK_UXN
+       }, {
+               .virt = 0x80000000UL,
+               .phys = 0x80000000UL,
+               .size = 0x80000000UL,
+               .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+                        PTE_BLOCK_INNER_SHARE
+       }, {
+               .virt = 0x880000000UL,
+               .phys = 0x880000000UL,
+               .size = 0x80000000UL,
+               .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+                        PTE_BLOCK_INNER_SHARE
+       }, {
+               .virt = 0x500000000UL,
+               .phys = 0x500000000UL,
+               .size = 0x400000000UL,
+               .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+                        PTE_BLOCK_NON_SHARE |
+                        PTE_BLOCK_PXN | PTE_BLOCK_UXN
+       }, {
+               /* List terminator */
+               0,
+       }
+};
+
+struct mm_region *mem_map = j784s4_mem_map;
+
+#endif /* CONFIG_SOC_K3_J784S4 */
diff --git a/arch/arm/mach-k3/include/mach/hardware.h 
b/arch/arm/mach-k3/include/mach/hardware.h
index 2c60ef8543..77f36c6707 100644
--- a/arch/arm/mach-k3/include/mach/hardware.h
+++ b/arch/arm/mach-k3/include/mach/hardware.h
@@ -30,6 +30,10 @@
 #include "am62a_hardware.h"
 #endif
 
+#ifdef CONFIG_SOC_K3_J784S4
+#include "j784s4_hardware.h"
+#endif
+
 /* Assuming these addresses and definitions stay common across K3 devices */
 #define CTRLMMR_WKUP_JTAG_ID   (WKUP_CTRL_MMR0_BASE + 0x14)
 #define JTAG_ID_VARIANT_SHIFT  28
diff --git a/arch/arm/mach-k3/include/mach/j784s4_hardware.h 
b/arch/arm/mach-k3/include/mach/j784s4_hardware.h
new file mode 100644
index 0000000000..afcf39c45d
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/j784s4_hardware.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * K3: J784S4 SoC definitions, structures etc.
+ *
+ * (C) Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef __ASM_ARCH_J784S4_HARDWARE_H
+#define __ASM_ARCH_J784S4_HARDWARE_H
+
+#include <config.h>
+#ifndef __ASSEMBLY__
+#include <linux/bitops.h>
+#endif
+
+#define WKUP_CTRL_MMR0_BASE                            0x43000000
+#define MCU_CTRL_MMR0_BASE                             0x40f00000
+#define CTRL_MMR0_BASE                                 0x00100000
+
+#define CTRLMMR_MAIN_DEVSTAT                           (CTRL_MMR0_BASE + 0x30)
+#define MAIN_DEVSTAT_BOOT_MODE_B_MASK                  BIT(0)
+#define MAIN_DEVSTAT_BOOT_MODE_B_SHIFT                 0
+#define MAIN_DEVSTAT_BKUP_BOOTMODE_MASK                        GENMASK(3, 1)
+#define MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT               1
+#define MAIN_DEVSTAT_PRIM_BOOTMODE_MMC_PORT_MASK       BIT(6)
+#define MAIN_DEVSTAT_PRIM_BOOTMODE_PORT_SHIFT          6
+#define MAIN_DEVSTAT_BKUP_MMC_PORT_MASK                        BIT(7)
+#define MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT               7
+
+#define CTRLMMR_WKUP_DEVSTAT                           (WKUP_CTRL_MMR0_BASE + 
0x30)
+#define WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK             GENMASK(5, 3)
+#define WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT            3
+#define WKUP_DEVSTAT_MCU_OMLY_MASK                     BIT(6)
+#define WKUP_DEVSTAT_MCU_ONLY_SHIFT                    6
+
+/* ROM HANDOFF Structure location */
+#define ROM_EXTENDED_BOOT_DATA_INFO                    0x41cfdb00
+
+/* MCU SCRATCHPAD usage */
+#define TI_SRAM_SCRATCH_BOARD_EEPROM_START     
CONFIG_SYS_K3_MCU_SCRATCHPAD_BASE
+
+#endif /* __ASM_ARCH_J784S4_HARDWARE_H */
diff --git a/arch/arm/mach-k3/include/mach/j784s4_spl.h 
b/arch/arm/mach-k3/include/mach/j784s4_spl.h
new file mode 100644
index 0000000000..d312a57e69
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/j784s4_spl.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+ *     David Huang <d-hu...@ti.com>
+ */
+#ifndef _ASM_ARCH_J784S4_SPL_H_
+#define _ASM_ARCH_J784S4_SPL_H_
+
+/* With BootMode B = 0 */
+#include <linux/bitops.h>
+#define BOOT_DEVICE_HYPERFLASH         0x00
+#define BOOT_DEVICE_OSPI               0x01
+#define BOOT_DEVICE_QSPI               0x02
+#define BOOT_DEVICE_SPI                        0x03
+#define BOOT_DEVICE_ETHERNET           0x04
+#define BOOT_DEVICE_I2C                        0x06
+#define BOOT_DEVICE_UART               0x07
+#define BOOT_DEVICE_NOR                        BOOT_DEVICE_HYPERFLASH
+
+/* With BootMode B = 1 */
+#define BOOT_DEVICE_MMC2               0x10
+#define BOOT_DEVICE_MMC1               0x11
+#define BOOT_DEVICE_DFU                        0x12
+#define BOOT_DEVICE_UFS                        0x13
+#define BOOT_DEVIE_GPMC                        0x14
+#define BOOT_DEVICE_PCIE               0x15
+#define BOOT_DEVICE_XSPI               0x16
+#define BOOT_DEVICE_RAM                        0x17
+#define BOOT_DEVICE_MMC2_2             0xFF /* Invalid value */
+
+/* Backup boot modes with MCU Only = 0 */
+#define BACKUP_BOOT_DEVICE_RAM         0x0
+#define BACKUP_BOOT_DEVICE_USB         0x1
+#define BACKUP_BOOT_DEVICE_UART                0x3
+#define BACKUP_BOOT_DEVICE_ETHERNET    0x4
+#define BACKUP_BOOT_DEVICE_MMC2                0x5
+#define BACKUP_BOOT_DEVICE_SPI         0x6
+#define BACKUP_BOOT_DEVICE_I2C         0x7
+
+#define BOOT_MODE_B_SHIFT              4
+#define BOOT_MODE_B_MASK               BIT(4)
+
+#define K3_PRIMARY_BOOTMODE            0x0
+#define K3_BACKUP_BOOTMODE             0x1
+
+#endif
diff --git a/arch/arm/mach-k3/include/mach/spl.h 
b/arch/arm/mach-k3/include/mach/spl.h
index 356cd89210..82f57347e6 100644
--- a/arch/arm/mach-k3/include/mach/spl.h
+++ b/arch/arm/mach-k3/include/mach/spl.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
  *     Lokesh Vutla <lokeshvu...@ti.com>
  */
 #ifndef _ASM_ARCH_SPL_H_
@@ -30,4 +30,8 @@
 #include "am62a_spl.h"
 #endif
 
+#ifdef CONFIG_SOC_K3_J784S4
+#include "j784s4_spl.h"
+#endif
+
 #endif /* _ASM_ARCH_SPL_H_ */
diff --git a/arch/arm/mach-k3/j784s4/Makefile b/arch/arm/mach-k3/j784s4/Makefile
new file mode 100644
index 0000000000..d8bb3c7719
--- /dev/null
+++ b/arch/arm/mach-k3/j784s4/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier:     GPL-2.0+
+#
+# Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+obj-y += clk-data.o
+obj-y += dev-data.o
diff --git a/arch/arm/mach-k3/j784s4/dev-data.c 
b/arch/arm/mach-k3/j784s4/dev-data.c
new file mode 100644
index 0000000000..e44afad3ec
--- /dev/null
+++ b/arch/arm/mach-k3/j784s4/dev-data.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * J784S4 specific device platform data
+ *
+ * This file is auto generated. Please do not hand edit and report any issues
+ * to Bryan Brattlof <b...@ti.com>.
+ *
+ * Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include "k3-dev.h"
+
+static struct ti_psc soc_psc_list[] = {
+       [0] = PSC(0, 0x42000000),
+       [1] = PSC(1, 0x00420000),
+       [2] = PSC(2, 0x00400000),
+};
+
+static struct ti_pd soc_pd_list[] = {
+       [0] = PSC_PD(0, &soc_psc_list[0], NULL),
+       [1] = PSC_PD(3, &soc_psc_list[1], NULL),
+       [2] = PSC_PD(0, &soc_psc_list[2], NULL),
+       [3] = PSC_PD(1, &soc_psc_list[2], &soc_pd_list[2]),
+       [4] = PSC_PD(14, &soc_psc_list[2], NULL),
+       [5] = PSC_PD(15, &soc_psc_list[2], &soc_pd_list[4]),
+       [6] = PSC_PD(16, &soc_psc_list[2], &soc_pd_list[4]),
+       [7] = PSC_PD(38, &soc_psc_list[2], NULL),
+};
+
+static struct ti_lpsc soc_lpsc_list[] = {
+       [0] = PSC_LPSC(0, &soc_psc_list[0], &soc_pd_list[0], NULL),
+       [1] = PSC_LPSC(3, &soc_psc_list[0], &soc_pd_list[0], NULL),
+       [2] = PSC_LPSC(10, &soc_psc_list[0], &soc_pd_list[0], NULL),
+       [3] = PSC_LPSC(11, &soc_psc_list[0], &soc_pd_list[0], NULL),
+       [4] = PSC_LPSC(12, &soc_psc_list[0], &soc_pd_list[0], NULL),
+       [5] = PSC_LPSC(12, &soc_psc_list[1], &soc_pd_list[1], 
&soc_lpsc_list[6]),
+       [6] = PSC_LPSC(13, &soc_psc_list[1], &soc_pd_list[1], NULL),
+       [7] = PSC_LPSC(0, &soc_psc_list[2], &soc_pd_list[2], NULL),
+       [8] = PSC_LPSC(9, &soc_psc_list[2], &soc_pd_list[2], &soc_lpsc_list[2]),
+       [9] = PSC_LPSC(14, &soc_psc_list[2], &soc_pd_list[2], 
&soc_lpsc_list[10]),
+       [10] = PSC_LPSC(15, &soc_psc_list[2], &soc_pd_list[2], NULL),
+       [11] = PSC_LPSC(16, &soc_psc_list[2], &soc_pd_list[2], 
&soc_lpsc_list[12]),
+       [12] = PSC_LPSC(17, &soc_psc_list[2], &soc_pd_list[2], NULL),
+       [13] = PSC_LPSC(20, &soc_psc_list[2], &soc_pd_list[2], 
&soc_lpsc_list[5]),
+       [14] = PSC_LPSC(23, &soc_psc_list[2], &soc_pd_list[2], 
&soc_lpsc_list[5]),
+       [15] = PSC_LPSC(25, &soc_psc_list[2], &soc_pd_list[2], 
&soc_lpsc_list[5]),
+       [16] = PSC_LPSC(43, &soc_psc_list[2], &soc_pd_list[3], NULL),
+       [17] = PSC_LPSC(45, &soc_psc_list[2], &soc_pd_list[3], NULL),
+       [18] = PSC_LPSC(78, &soc_psc_list[2], &soc_pd_list[4], NULL),
+       [19] = PSC_LPSC(80, &soc_psc_list[2], &soc_pd_list[5], 
&soc_lpsc_list[18]),
+       [20] = PSC_LPSC(81, &soc_psc_list[2], &soc_pd_list[6], 
&soc_lpsc_list[18]),
+       [21] = PSC_LPSC(120, &soc_psc_list[2], &soc_pd_list[7], 
&soc_lpsc_list[22]),
+       [22] = PSC_LPSC(121, &soc_psc_list[2], &soc_pd_list[7], NULL),
+};
+
+static struct ti_dev soc_dev_list[] = {
+       PSC_DEV(160, &soc_lpsc_list[0]),
+       PSC_DEV(161, &soc_lpsc_list[0]),
+       PSC_DEV(162, &soc_lpsc_list[0]),
+       PSC_DEV(243, &soc_lpsc_list[0]),
+       PSC_DEV(149, &soc_lpsc_list[0]),
+       PSC_DEV(167, &soc_lpsc_list[1]),
+       PSC_DEV(279, &soc_lpsc_list[1]),
+       PSC_DEV(161, &soc_lpsc_list[2]),
+       PSC_DEV(162, &soc_lpsc_list[3]),
+       PSC_DEV(160, &soc_lpsc_list[4]),
+       PSC_DEV(139, &soc_lpsc_list[5]),
+       PSC_DEV(194, &soc_lpsc_list[6]),
+       PSC_DEV(78, &soc_lpsc_list[7]),
+       PSC_DEV(61, &soc_lpsc_list[8]),
+       PSC_DEV(131, &soc_lpsc_list[9]),
+       PSC_DEV(191, &soc_lpsc_list[10]),
+       PSC_DEV(132, &soc_lpsc_list[11]),
+       PSC_DEV(192, &soc_lpsc_list[12]),
+       PSC_DEV(398, &soc_lpsc_list[13]),
+       PSC_DEV(141, &soc_lpsc_list[14]),
+       PSC_DEV(140, &soc_lpsc_list[15]),
+       PSC_DEV(146, &soc_lpsc_list[16]),
+       PSC_DEV(392, &soc_lpsc_list[17]),
+       PSC_DEV(395, &soc_lpsc_list[17]),
+       PSC_DEV(198, &soc_lpsc_list[18]),
+       PSC_DEV(202, &soc_lpsc_list[19]),
+       PSC_DEV(203, &soc_lpsc_list[20]),
+       PSC_DEV(133, &soc_lpsc_list[21]),
+       PSC_DEV(193, &soc_lpsc_list[22]),
+};
+
+const struct ti_k3_pd_platdata j784s4_pd_platdata = {
+       .psc = soc_psc_list,
+       .pd = soc_pd_list,
+       .lpsc = soc_lpsc_list,
+       .devs = soc_dev_list,
+       .num_psc = 3,
+       .num_pd = 8,
+       .num_lpsc = 23,
+       .num_devs = 29,
+};
diff --git a/arch/arm/mach-k3/j784s4_init.c b/arch/arm/mach-k3/j784s4_init.c
new file mode 100644
index 0000000000..e2c7624cd6
--- /dev/null
+++ b/arch/arm/mach-k3/j784s4_init.c
@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * J784S4: SoC specific initialization
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+ *     Hari Nagalla <hnaga...@ti.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <asm/armv7_mpu.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sysfw-loader.h>
+#include "common.h"
+#include <asm/arch/sys_proto.h>
+#include <linux/soc/ti/ti_sci_protocol.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+#include <dm/pinctrl.h>
+#include <mmc.h>
+#include <remoteproc.h>
+
+static void ctrl_mmr_unlock(void)
+{
+       /* Unlock all WKUP_CTRL_MMR0 module registers */
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 4);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
+       mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);
+
+       /* Unlock all MCU_CTRL_MMR0 module registers */
+       mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
+       mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
+       mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
+       mmr_unlock(MCU_CTRL_MMR0_BASE, 3);
+       mmr_unlock(MCU_CTRL_MMR0_BASE, 4);
+
+       /* Unlock all CTRL_MMR0 module registers */
+       mmr_unlock(CTRL_MMR0_BASE, 0);
+       mmr_unlock(CTRL_MMR0_BASE, 1);
+       mmr_unlock(CTRL_MMR0_BASE, 2);
+       mmr_unlock(CTRL_MMR0_BASE, 3);
+       mmr_unlock(CTRL_MMR0_BASE, 5);
+       mmr_unlock(CTRL_MMR0_BASE, 7);
+}
+
+void k3_mmc_stop_clock(void)
+{
+       if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
+               if (spl_boot_device() == BOOT_DEVICE_MMC1) {
+                       struct mmc *mmc = find_mmc_device(0);
+
+                       if (!mmc)
+                               return;
+
+                       mmc->saved_clock = mmc->clock;
+                       mmc_set_clock(mmc, 0, true);
+               }
+       }
+}
+
+void k3_mmc_restart_clock(void)
+{
+       if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
+               if (spl_boot_device() == BOOT_DEVICE_MMC1) {
+                       struct mmc *mmc = find_mmc_device(0);
+
+                       if (!mmc)
+                               return;
+
+                       mmc_set_clock(mmc, mmc->saved_clock, false);
+               }
+       }
+}
+
+/*
+ * This uninitialized global variable would normal end up in the .bss section,
+ * but the .bss is cleared between writing and reading this variable, so move
+ * it to the .data section.
+ */
+u32 bootindex __section(".data");
+static struct rom_extended_boot_data bootdata __section(".data");
+
+static void store_boot_info_from_rom(void)
+{
+       bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
+       memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO,
+              sizeof(struct rom_extended_boot_data));
+}
+
+void board_init_f(ulong dummy)
+{
+       struct udevice *dev;
+       int ret;
+
+       /*
+        * Cannot delay this further as there is a chance that
+        * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
+        */
+       store_boot_info_from_rom();
+
+       /* Make all control module registers accessible */
+       ctrl_mmr_unlock();
+
+       if (IS_ENABLED(CONFIG_CPU_V7R)) {
+               disable_linefill_optimization();
+               setup_k3_mpu_regions();
+       }
+
+       /* Init DM early */
+       ret = spl_early_init();
+
+       /* Prepare console output */
+       preloader_console_init();
+
+       if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
+               /*
+                * Process pinctrl for the serial0 a.k.a. WKUP_UART0 module and 
continue
+                * regardless of the result of pinctrl. Do this without probing 
the
+                * device, but instead by searching the device that would 
request the
+                * given sequence number if probed. The UART will be used by 
the system
+                * firmware (SYSFW) image for various purposes and SYSFW 
depends on us
+                * to initialize its pin settings.
+                */
+               ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
+               if (!ret)
+                       pinctrl_select_state(dev, "default");
+
+               /*
+                * Load, start up, and configure system controller firmware. 
Provide
+                * the U-Boot console init function to the SYSFW post-PM 
configuration
+                * callback hook, effectively switching on (or over) the console
+                * output.
+                */
+               k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata),
+                               k3_mmc_stop_clock, k3_mmc_restart_clock);
+
+               if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
+                       /*
+                        * Force probe of clk_k3 driver here to ensure basic 
default clock
+                        * configuration is always done for enabling PM 
services.
+                        */
+                       ret = uclass_get_device_by_driver(UCLASS_CLK,
+                                                         DM_DRIVER_GET(ti_clk),
+                                                         &dev);
+                       if (ret)
+                               panic("Failed to initialize clk-k3!\n");
+               }
+       }
+
+       /* Output System Firmware version info */
+       k3_sysfw_print_ver();
+
+       if (IS_ENABLED(CONFIG_TARGET_J784S4_R5_EVM)) {
+               ret = uclass_get_device_by_name(UCLASS_MISC, "msmc", &dev);
+               if (ret)
+                       panic("Probe of msmc failed: %d\n", ret);
+
+               ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+               if (ret)
+                       panic("DRAM 0 init failed: %d\n", ret);
+
+               ret = uclass_next_device_err(&dev);
+               if (ret)
+                       panic("DRAM 1 init failed: %d\n", ret);
+
+               ret = uclass_next_device_err(&dev);
+               if (ret)
+                       panic("DRAM 2 init failed: %d\n", ret);
+
+               ret = uclass_next_device_err(&dev);
+               if (ret)
+                       panic("DRAM 3 init failed: %d\n", ret);
+       }
+
+       spl_enable_dcache();
+}
+
+u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
+{
+       switch (boot_device) {
+       case BOOT_DEVICE_MMC1:
+               return MMCSD_MODE_EMMCBOOT;
+       case BOOT_DEVICE_MMC2:
+               return MMCSD_MODE_FS;
+       default:
+               return MMCSD_MODE_RAW;
+       }
+}
+
+static u32 __get_backup_bootmedia(u32 main_devstat)
+{
+       u32 bkup_boot = (main_devstat & MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
+                       MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;
+
+       switch (bkup_boot) {
+       case BACKUP_BOOT_DEVICE_USB:
+               return BOOT_DEVICE_DFU;
+       case BACKUP_BOOT_DEVICE_UART:
+               return BOOT_DEVICE_UART;
+       case BACKUP_BOOT_DEVICE_ETHERNET:
+               return BOOT_DEVICE_ETHERNET;
+       case BACKUP_BOOT_DEVICE_MMC2:
+       {
+               u32 port = (main_devstat & MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
+                           MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
+               if (port == 0x0)
+                       return BOOT_DEVICE_MMC1;
+               return BOOT_DEVICE_MMC2;
+       }
+       case BACKUP_BOOT_DEVICE_SPI:
+               return BOOT_DEVICE_SPI;
+       case BACKUP_BOOT_DEVICE_I2C:
+               return BOOT_DEVICE_I2C;
+       }
+
+       return BOOT_DEVICE_RAM;
+}
+
+static u32 __get_primary_bootmedia(u32 main_devstat, u32 wkup_devstat)
+{
+       u32 bootmode = (wkup_devstat & WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
+                       WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
+
+       bootmode |= (main_devstat & MAIN_DEVSTAT_BOOT_MODE_B_MASK) <<
+                       BOOT_MODE_B_SHIFT;
+
+       if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI ||
+           bootmode == BOOT_DEVICE_XSPI)
+               bootmode = BOOT_DEVICE_SPI;
+
+       if (bootmode == BOOT_DEVICE_MMC2) {
+               u32 port = (main_devstat &
+                           MAIN_DEVSTAT_PRIM_BOOTMODE_MMC_PORT_MASK) >>
+                          MAIN_DEVSTAT_PRIM_BOOTMODE_PORT_SHIFT;
+               if (port == 0x0)
+                       bootmode = BOOT_DEVICE_MMC1;
+       }
+
+       return bootmode;
+}
+
+u32 spl_boot_device(void)
+{
+       u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
+       u32 main_devstat;
+
+       if (wkup_devstat & WKUP_DEVSTAT_MCU_OMLY_MASK) {
+               printf("ERROR: MCU only boot is not yet supported\n");
+               return BOOT_DEVICE_RAM;
+       }
+
+       /* MAIN CTRL MMR can only be read if MCU ONLY is 0 */
+       main_devstat = readl(CTRLMMR_MAIN_DEVSTAT);
+
+       if (bootindex == K3_PRIMARY_BOOTMODE)
+               return __get_primary_bootmedia(main_devstat, wkup_devstat);
+       else
+               return __get_backup_bootmedia(main_devstat);
+}
+
+#define J784S4_DEV_MCU_RTI0                    367
+#define J784S4_DEV_MCU_RTI1                    368
+#define J784S4_DEV_MCU_ARMSS0_CPU0             346
+#define J784S4_DEV_MCU_ARMSS0_CPU1             347
+
+void release_resources_for_core_shutdown(void)
+{
+       if (IS_ENABLED(CONFIG_SYS_K3_SPL_ATF)) {
+               struct ti_sci_handle *ti_sci;
+               struct ti_sci_dev_ops *dev_ops;
+               struct ti_sci_proc_ops *proc_ops;
+               int ret;
+               u32 i;
+
+               const u32 put_device_ids[] = {
+                       J784S4_DEV_MCU_RTI0,
+                       J784S4_DEV_MCU_RTI1,
+               };
+
+               ti_sci = get_ti_sci_handle();
+               dev_ops = &ti_sci->ops.dev_ops;
+               proc_ops = &ti_sci->ops.proc_ops;
+
+               /* Iterate through list of devices to put (shutdown) */
+               for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
+                       u32 id = put_device_ids[i];
+
+                       ret = dev_ops->put_device(ti_sci, id);
+                       if (ret)
+                               panic("Failed to put device %u (%d)\n", id, 
ret);
+               }
+
+               const u32 put_core_ids[] = {
+                       J784S4_DEV_MCU_ARMSS0_CPU1,
+                       J784S4_DEV_MCU_ARMSS0_CPU0,     /* Handle CPU0 after 
CPU1 */
+               };
+
+               /* Iterate through list of cores to put (shutdown) */
+               for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
+                       u32 id = put_core_ids[i];
+
+                       /*
+                        * Queue up the core shutdown request. Note that this 
call
+                        * needs to be followed up by an actual invocation of 
an WFE
+                        * or WFI CPU instruction.
+                        */
+                       ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
+                       if (ret)
+                               panic("Failed sending core %u shutdown message 
(%d)\n",
+                                     id, ret);
+               }
+       }
+}
diff --git a/board/ti/j784s4/j784s4.env b/board/ti/j784s4/j784s4.env
new file mode 100644
index 0000000000..4be91ee89c
--- /dev/null
+++ b/board/ti/j784s4/j784s4.env
@@ -0,0 +1,108 @@
+loadaddr=0x82000000
+kernel_addr_r=0x82000000
+fdtaddr=0x88000000
+dtboaddr=0x89000000
+fdt_addr_r=0x88000000
+fdtoverlay_addr_r=0x89000000
+rdaddr=0x88080000
+ramdisk_addr_r=0x88080000
+scriptaddr=0x80000000
+pxefile_addr_r=0x80100000
+bootm_size=0x10000000
+boot_fdt=try
+
+mmcrootfstype=ext4 rootwait
+finduuid=part uuid ${boot} ${bootpart} uuid
+args_mmc=run finduuid;setenv bootargs console=${console}
+       ${optargs}
+       root=PARTUUID=${uuid} rw
+       rootfstype=${mmcrootfstype}
+loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr
+bootscript=echo Running bootscript from mmc${mmcdev} ...;
+       source ${loadaddr}
+bootenvfile=uEnv.txt
+importbootenv=echo Importing environment from mmc${mmcdev} ...;
+       env import -t ${loadaddr} ${filesize}
+loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}
+loadimage=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
+loadfdt=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
+envboot=mmc dev ${mmcdev};
+       if mmc rescan; then
+               echo SD/MMC found on device ${mmcdev};
+               if run loadbootscript; then
+                       run bootscript;
+               else
+                       if run loadbootenv; then
+                               echo Loaded env from ${bootenvfile};
+                               run importbootenv;
+                       fi;
+                       if test -n $uenvcmd; then
+                               echo Running uenvcmd ...;
+                               run uenvcmd;
+                       fi;
+               fi;
+       fi;
+mmcloados=
+       if test ${boot_fdt} = yes || test ${boot_fdt} = try; then
+               if run loadfdt; then
+                       bootz ${loadaddr} - ${fdtaddr};
+               else
+                       if test ${boot_fdt} = try; then
+                               bootz;
+                       else
+                               echo WARN: Cannot load the DT;
+                       fi;
+               fi;
+       else
+               bootz;
+       fi;
+mmcboot=mmc dev ${mmcdev};
+       devnum=${mmcdev};
+       devtype=mmc;
+       if mmc rescan; then
+               echo SD/MMC found on device ${mmcdev};
+               if run loadimage; then
+                       run args_mmc;
+                       if test ${boot_fit} -eq 1; then
+                               run run_fit;
+                       else
+                               run mmcloados;
+                       fi;
+               fi;
+       fi;
+
+default_device_tree=k3-j784s4-evm.dtb
+findfdt=
+       setenv name_fdt ${default_device_tree};
+       setenv fdtfile ${name_fdt}
+name_kern=Image
+console=ttyS2,115200n8
+args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02880000
+       ${mtdparts}
+run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}
+
+boot=mmc
+mmcdev=1
+bootpart=1:2
+bootdir=/boot
+rd_spec=-
+init_mmc=run args_all args_mmc
+get_fdt_mmc=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${name_fdt}
+get_overlay_mmc=
+       fdt address ${fdtaddr};
+       fdt resize 0x100000;
+       for overlay in $name_overlays;
+       do;
+       load mmc ${bootpart} ${dtboaddr} ${bootdir}/${overlay} &&
+       fdt apply ${dtboaddr};
+       done;
+get_kern_mmc=load mmc ${bootpart} ${loadaddr}
+       ${bootdir}/${name_kern}
+get_fit_mmc=load mmc ${bootpart} ${addr_fit}
+       ${bootdir}/${name_fit}
+partitions=name=rootfs,start=0,size=-,uuid=${uuid_gpt_rootfs}
+
+splashfile=ti.gz
+splashimage=0x82000000
+splashpos=m,m
+splashsource=mmc
diff --git a/include/configs/j784s4_evm.h b/include/configs/j784s4_evm.h
new file mode 100644
index 0000000000..3e429fb036
--- /dev/null
+++ b/include/configs/j784s4_evm.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration header file for K3 J784S4 EVM
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ *     Hari Nagalla <hnaga...@ti.com>
+ */
+
+#ifndef __CONFIG_J784S4_EVM_H
+#define __CONFIG_J784S4_EVM_H
+
+#include <linux/sizes.h>
+#include <config_distro_bootcmd.h>
+#include <environment/ti/mmc.h>
+
+/* DDR Configuration */
+#define CFG_SYS_SDRAM_BASE1            0x880000000
+
+#ifdef CONFIG_CMD_MMC
+#define DISTRO_BOOT_DEV_MMC(func) func(MMC, mmc, 0) func(MMC, mmc, 1)
+#else
+#define DISTRO_BOOT_DEV_MMC(func)
+#endif
+
+#ifdef CONFIG_CMD_PXE
+#define DISTRO_BOOT_DEV_PXE(func) func(PXE, pxe, na)
+#else
+#define DISTRO_BOOT_DEV_PXE(func)
+#endif
+
+#ifdef CONFIG_CMD_DHCP
+#define DISTRO_BOOT_DEV_DHCP(func) func(DHCP, dhcp, na)
+#else
+#define DISTRO_BOOT_DEV_DHCP(func)
+#endif
+
+#define BOOT_TARGET_DEVICES(func) \
+       DISTRO_BOOT_DEV_MMC(func) \
+       DISTRO_BOOT_DEV_PXE(func) \
+       DISTRO_BOOT_DEV_DHCP(func)
+
+/* Incorporate settings into the U-Boot environment */
+#define CFG_EXTRA_ENV_SETTINGS                                 \
+       BOOTENV
+
+/* Now for the remaining common defines */
+#include <configs/ti_armv7_common.h>
+
+#endif /* __CONFIG_J784S4_EVM_H */
-- 
2.17.1

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