AM654 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 <lokeshvu...@ti.com>
Signed-off-by: Andreas Dannenberg <dannenb...@ti.com>
Signed-off-by: Vignesh R <vigne...@ti.com>
---
arch/arm/include/asm/spl.h | 2 +-
arch/arm/mach-k3/Kconfig | 7 +++
arch/arm/mach-k3/am6_init.c | 54 +++++++++++++++++++-
arch/arm/mach-k3/include/mach/am6_hardware.h | 23 +++++++++
arch/arm/mach-k3/include/mach/am6_spl.h | 36 +++++++++++++
arch/arm/mach-k3/include/mach/hardware.h | 12 +++++
arch/arm/mach-k3/include/mach/spl.h | 12 +++++
7 files changed, 144 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/mach-k3/include/mach/am6_hardware.h
create mode 100644 arch/arm/mach-k3/include/mach/am6_spl.h
create mode 100644 arch/arm/mach-k3/include/mach/hardware.h
create mode 100644 arch/arm/mach-k3/include/mach/spl.h
diff --git a/arch/arm/include/asm/spl.h b/arch/arm/include/asm/spl.h
index b9e8a4f5d5..e568af2561 100644
--- a/arch/arm/include/asm/spl.h
+++ b/arch/arm/include/asm/spl.h
@@ -8,7 +8,7 @@
#if defined(CONFIG_ARCH_OMAP2PLUS) \
|| defined(CONFIG_EXYNOS4) || defined(CONFIG_EXYNOS5) \
- || defined(CONFIG_EXYNOS4210)
+ || defined(CONFIG_EXYNOS4210) || defined(CONFIG_ARCH_K3)
/* Platform-specific defines */
#include <asm/arch/spl.h>
diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig
index c532fbd061..117e5b4e4a 100644
--- a/arch/arm/mach-k3/Kconfig
+++ b/arch/arm/mach-k3/Kconfig
@@ -40,4 +40,11 @@ config MCU_SCRATCHPAD_SIZE
help
Describes the size of MCU Scratchpad RAM.
+config BOOT_PARAM_TABLE_INDEX
+ hex "Address of Array Index to be used within BOOT_PARAM_TABLE"
+ default 0x41c7fbfc if SOC_K3_AM6
+ help
+ Address at which ROM stores the value which determines if SPL
+ is booted up by primary boot media or secondary boot media.
+
endif
diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c
index 7a78e85938..8a7cedf66f 100644
--- a/arch/arm/mach-k3/am6_init.c
+++ b/arch/arm/mach-k3/am6_init.c
@@ -7,11 +7,26 @@
*/
#include <common.h>
+#include <asm/io.h>
#include <spl.h>
+#include <asm/arch/hardware.h>
#ifdef CONFIG_SPL_BUILD
+static void store_boot_index_from_rom(void)
+{
+ u32 *boot_index = (u32 *)K3_BOOT_PARAM_TABLE_INDEX_VAL;
+
+ *boot_index = *(u32 *)(CONFIG_BOOT_PARAM_TABLE_INDEX);
+}
+
void board_init_f(ulong dummy)
{
+ /*
+ * Cannot delay this further as there is a chance that
+ * BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
+ */
+ store_boot_index_from_rom();
+
/* Init DM early in-order to invoke system controller */
spl_early_init();
@@ -19,10 +34,47 @@ void board_init_f(ulong dummy)
preloader_console_init();
}
-u32 spl_boot_device(void)
+static u32 __get_backup_bootmedia(u32 devstat)
{
+ u32 bkup_boot = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
+ CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;
+
+ switch (bkup_boot) {
+#define __BKUP_BOOT_DEVICE(n) \
+ case BACKUP_BOOT_DEVICE_##n: \
+ return BOOT_DEVICE_##n;
+ __BKUP_BOOT_DEVICE(USB);
+ __BKUP_BOOT_DEVICE(UART);
+ __BKUP_BOOT_DEVICE(ETHERNET);
+ __BKUP_BOOT_DEVICE(MMC2);
+ __BKUP_BOOT_DEVICE(SPI);
+ __BKUP_BOOT_DEVICE(HYPERFLASH);
+ __BKUP_BOOT_DEVICE(I2C);
+ };
+
return BOOT_DEVICE_RAM;
}
+
+static u32 __get_primary_bootmedia(u32 devstat)
+{
+ u32 bootmode = devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK;
+
+ if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI)
+ bootmode = BOOT_DEVICE_SPI;
+
+ return bootmode;
+}
+
+u32 spl_boot_device(void)
+{
+ u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
+ u32 bootindex = readl(K3_BOOT_PARAM_TABLE_INDEX_VAL);
+
+ if (bootindex == K3_PRIMARY_BOOTMODE)
+ return __get_primary_bootmedia(devstat);
+ else
+ return __get_backup_bootmedia(devstat);
+}
#endif
#ifndef CONFIG_SYSRESET
diff --git a/arch/arm/mach-k3/include/mach/am6_hardware.h
b/arch/arm/mach-k3/include/mach/am6_hardware.h
new file mode 100644
index 0000000000..b56aa60ec7
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/am6_hardware.h
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * K3: AM6 SoC definitions, structures etc.
+ *
+ * (C) Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef __ASM_ARCH_AM6_HARDWARE_H
+#define __ASM_ARCH_AM6_HARDWARE_H
+
+#include <config.h>
+
+#define CTRL_MMR0_BASE 0x00100000
+#define CTRLMMR_MAIN_DEVSTAT (CTRL_MMR0_BASE + 0x30)
+
+#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK GENMASK(3, 0)
+#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT 0
+#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK GENMASK(6, 4)
+#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT 4
+
+/* MCU SCRATCHPAD usage */
+#define K3_BOOT_PARAM_TABLE_INDEX_VAL CONFIG_MCU_SCRATCHPAD_BASE
+
+#endif /* __ASM_ARCH_AM6_HARDWARE_H */
diff --git a/arch/arm/mach-k3/include/mach/am6_spl.h
b/arch/arm/mach-k3/include/mach/am6_spl.h
new file mode 100644
index 0000000000..7dd63247dc
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/am6_spl.h
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Lokesh Vutla <lokeshvu...@ti.com>
+ */
+#ifndef _ASM_ARCH_AM6_SPL_H_
+#define _ASM_ARCH_AM6_SPL_H_
+
+#define BOOT_DEVICE_RAM 0x00
+#define BOOT_DEVICE_OSPI 0x01
+#define BOOT_DEVICE_QSPI 0x02
+#define BOOT_DEVICE_HYPERFLASH 0x03
+#define BOOT_DEVICE_SPI 0x04
+#define BOOT_DEVICE_I2C 0x05
+#define BOOT_DEVICE_MMC2 0x06
+#define BOOT_DEVICE_ETHERNET 0x07
+#define BOOT_DEVICE_USB 0x08
+#define BOOT_DEVICE_PCIE 0x09
+#define BOOT_DEVICE_UART 0x0a
+#define BOOT_DEVICE_NAND 0x0c
+#define BOOT_DEVICE_MMC1 0x0d
+#define BOOT_DEVICE_MMC2_2 0x0e
+
+#define BACKUP_BOOT_DEVICE_RAM 0x0
+#define BACKUP_BOOT_DEVICE_USB 0x1
+#define BACKUP_BOOT_DEVICE_UART 0x2
+#define BACKUP_BOOT_DEVICE_ETHERNET 0x3
+#define BACKUP_BOOT_DEVICE_MMC2 0x4
+#define BACKUP_BOOT_DEVICE_SPI 0x5
+#define BACKUP_BOOT_DEVICE_HYPERFLASH 0x6
+#define BACKUP_BOOT_DEVICE_I2C 0x7
+
+#define K3_PRIMARY_BOOTMODE 0x0
+#define K3_BACKUP_BOOTMODE 0x1
+
+#endif
diff --git a/arch/arm/mach-k3/include/mach/hardware.h
b/arch/arm/mach-k3/include/mach/hardware.h
new file mode 100644
index 0000000000..c6b8dae2bd
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/hardware.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Lokesh Vutla <lokeshvu...@ti.com>
+ */
+#ifndef _ASM_ARCH_HARDWARE_H_
+#define _ASM_ARCH_HARDWARE_H_
+
+#ifdef CONFIG_SOC_K3_AM6
+#include "am6_hardware.h"
+#endif
+#endif /* _ASM_ARCH_HARDWARE_H_ */
diff --git a/arch/arm/mach-k3/include/mach/spl.h
b/arch/arm/mach-k3/include/mach/spl.h
new file mode 100644
index 0000000000..e72e006cbc
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/spl.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Lokesh Vutla <lokeshvu...@ti.com>
+ */
+#ifndef _ASM_ARCH_SPL_H_
+#define _ASM_ARCH_SPL_H_
+
+#ifdef CONFIG_SOC_K3_AM6
+#include "am6_spl.h"
+#endif
+#endif /* _ASM_ARCH_SPL_H_ */
--
2.18.0
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