[U-Boot] [PATCH 02/14] armV7R: K3: j721e: Add support for boot device detection
Lokesh Vutla
lokeshvutla at ti.com
Wed May 22 18:36:55 UTC 2019
J721E allows for booting from primary or backup boot media.
Both media can be chosen individually based on switch settings.
ROM looks for a valid image in primary boot media, if not found
then looks in backup boot media. In order to pass this boot media
information to boot loader, ROM stores a value at a particular
address. Add support for reading this information and determining
the boot media correctly.
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
---
arch/arm/mach-k3/include/mach/hardware.h | 4 ++
.../arm/mach-k3/include/mach/j721e_hardware.h | 52 +++++++++++++++++++
arch/arm/mach-k3/include/mach/j721e_spl.h | 31 +++++++++++
arch/arm/mach-k3/include/mach/spl.h | 4 ++
arch/arm/mach-k3/j721e_init.c | 46 ++++++++++++++++
5 files changed, 137 insertions(+)
create mode 100644 arch/arm/mach-k3/include/mach/j721e_hardware.h
create mode 100644 arch/arm/mach-k3/include/mach/j721e_spl.h
diff --git a/arch/arm/mach-k3/include/mach/hardware.h b/arch/arm/mach-k3/include/mach/hardware.h
index b39f780d26..4e629822aa 100644
--- a/arch/arm/mach-k3/include/mach/hardware.h
+++ b/arch/arm/mach-k3/include/mach/hardware.h
@@ -9,4 +9,8 @@
#ifdef CONFIG_SOC_K3_AM6
#include "am6_hardware.h"
#endif
+
+#ifdef CONFIG_SOC_K3_J721E
+#include "j721e_hardware.h"
+#endif
#endif /* _ASM_ARCH_HARDWARE_H_ */
diff --git a/arch/arm/mach-k3/include/mach/j721e_hardware.h b/arch/arm/mach-k3/include/mach/j721e_hardware.h
new file mode 100644
index 0000000000..4f84b76af6
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/j721e_hardware.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * K3: J721E SoC definitions, structures etc.
+ *
+ * (C) Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef __ASM_ARCH_J721E_HARDWARE_H
+#define __ASM_ARCH_J721E_HARDWARE_H
+
+#include <config.h>
+
+#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 WKUP_CTRL_MMR0_BASE 0x43000000
+#define MCU_CTRL_MMR0_BASE 0x40f00000
+
+#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
+
+/*
+ * The CTRL_MMR0 memory space is divided into several equally-spaced
+ * partitions, so defining the partition size allows us to determine
+ * register addresses common to those partitions.
+ */
+#define CTRL_MMR0_PARTITION_SIZE 0x4000
+
+/*
+ * CTRL_MMR0, WKUP_CTRL_MMR0, and MCU_CTR_MMR0 lock/kick-mechanism
+ * shared register definitions.
+ */
+#define CTRLMMR_LOCK_KICK0 0x01008
+#define CTRLMMR_LOCK_KICK0_UNLOCK_VAL 0x68ef3490
+#define CTRLMMR_LOCK_KICK0_UNLOCKED_MASK BIT(0)
+#define CTRLMMR_LOCK_KICK0_UNLOCKED_SHIFT 0
+#define CTRLMMR_LOCK_KICK1 0x0100c
+#define CTRLMMR_LOCK_KICK1_UNLOCK_VAL 0xd172bc5a
+
+/* MCU SCRATCHPAD usage */
+#define K3_BOOT_PARAM_TABLE_INDEX_VAL CONFIG_SYS_K3_MCU_SCRATCHPAD_BASE
+
+#endif /* __ASM_ARCH_J721E_HARDWARE_H */
diff --git a/arch/arm/mach-k3/include/mach/j721e_spl.h b/arch/arm/mach-k3/include/mach/j721e_spl.h
new file mode 100644
index 0000000000..f37e6da0db
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/j721e_spl.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
+ * Lokesh Vutla <lokeshvutla at ti.com>
+ */
+#ifndef _ASM_ARCH_J721E_SPL_H_
+#define _ASM_ARCH_J721E_SPL_H_
+
+/* With BootMode B = 0 */
+#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
+
+/* With BootMode B = 1 */
+#define BOOT_DEVICE_MMC1 0x10
+#define BOOT_DEVICE_MMC2 0x11
+#define BOOT_DEVICE_USB 0x12
+#define BOOT_DEVICE_UFS 0x13
+#define BOOT_DEVIE_GPMC 0x14
+#define BOOT_DEVICE_PCIE 0x15
+#define BOOT_DEVICE_MMC2_2 0x16
+#define BOOT_DEVICE_RAM 0x17
+
+#define BOOT_MODE_B_SHIFT 4
+#define BOOT_MODE_B_MASK BIT(4)
+
+#endif
diff --git a/arch/arm/mach-k3/include/mach/spl.h b/arch/arm/mach-k3/include/mach/spl.h
index 2d435aec17..a26c8ecdd5 100644
--- a/arch/arm/mach-k3/include/mach/spl.h
+++ b/arch/arm/mach-k3/include/mach/spl.h
@@ -9,4 +9,8 @@
#ifdef CONFIG_SOC_K3_AM6
#include "am6_spl.h"
#endif
+
+#ifdef CONFIG_SOC_K3_J721E
+#include "j721e_spl.h"
+#endif
#endif /* _ASM_ARCH_SPL_H_ */
diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 14b4881527..d798aed481 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -10,6 +10,7 @@
#include <spl.h>
#include <asm/io.h>
#include <asm/armv7_mpu.h>
+#include <asm/arch/hardware.h>
#include "common.h"
#ifdef CONFIG_SPL_BUILD
@@ -31,4 +32,49 @@ void board_init_f(ulong dummy)
/* Prepare console output */
preloader_console_init();
}
+
+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_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;
+ } else if (bootmode == BOOT_DEVICE_MMC1) {
+ u32 port = (main_devstat &
+ MAIN_DEVSTAT_PRIM_BOOTMODE_MMC_PORT_MASK) >>
+ MAIN_DEVSTAT_PRIM_BOOTMODE_PORT_SHIFT;
+ if (port == 0x1)
+ bootmode = BOOT_DEVICE_MMC2;
+ }
+
+ 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);
+
+ /* ToDo: Add support for backup boot media */
+ return __get_primary_bootmedia(main_devstat, wkup_devstat);
+}
#endif
--
2.17.1
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