board: arm: Add support for Broadcom BCM7445
Add support for loading U-Boot on the Broadcom 7445 SoC. This port
assumes Broadcom's BOLT bootloader is acting as the second stage
bootloader, and U-Boot is acting as the third stage bootloader, loaded
as an ELF program by BOLT.
Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 82140ef..4fbb424 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -542,6 +542,16 @@
select CPU_V7_HAS_VIRT
select PL011_SERIAL
+config ARCH_BCMSTB
+ bool "Broadcom BCM7XXX family"
+ select CPU_V7A
+ select DM
+ select OF_CONTROL
+ select OF_PRIOR_STAGE
+ help
+ This enables support for Broadcom ARM-based set-top box
+ chipsets, including the 7445 family of chips.
+
config TARGET_VEXPRESS_CA5X2
bool "Support vexpress_ca5x2"
select CPU_V7A
@@ -1326,6 +1336,8 @@
source "arch/arm/mach-bcm283x/Kconfig"
+source "arch/arm/mach-bcmstb/Kconfig"
+
source "arch/arm/mach-davinci/Kconfig"
source "arch/arm/mach-exynos/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f15b228..cac58bd 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -54,6 +54,7 @@
machine-$(CONFIG_ARCH_ASPEED) += aspeed
machine-$(CONFIG_ARCH_AT91) += at91
machine-$(CONFIG_ARCH_BCM283X) += bcm283x
+machine-$(CONFIG_ARCH_BCMSTB) += bcmstb
machine-$(CONFIG_ARCH_DAVINCI) += davinci
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_HIGHBANK) += highbank
diff --git a/arch/arm/mach-bcmstb/Kconfig b/arch/arm/mach-bcmstb/Kconfig
new file mode 100644
index 0000000..6c7952f
--- /dev/null
+++ b/arch/arm/mach-bcmstb/Kconfig
@@ -0,0 +1,36 @@
+if ARCH_BCMSTB
+
+config TARGET_BCM7445
+ bool "Broadcom 7445 TSBL"
+ depends on ARCH_BCMSTB
+ help
+ Support for the Broadcom 7445 SoC. This port assumes BOLT
+ is acting as the second stage bootloader, and U-Boot is
+ acting as the third stage bootloader (TSBL), loaded by BOLT.
+ This port may work on other BCM7xxx boards with
+ configuration changes.
+
+config SYS_CPU
+ default "armv7"
+
+config SYS_BOARD
+ default "bcmstb"
+
+config SYS_VENDOR
+ default "broadcom"
+
+config SYS_SOC
+ default "bcmstb"
+
+config SYS_CONFIG_NAME
+ default "bcm7445"
+
+config SYS_FDT_SAVE_ADDRESS
+ hex "Address to which the prior stage provided DTB will be copied"
+ default 0x1f00000
+
+config BCMSTB_SDHCI_INDEX
+ int "Index of preferred BCMSTB SDHCI alias in DTB"
+ default 1
+
+endif
diff --git a/arch/arm/mach-bcmstb/Makefile b/arch/arm/mach-bcmstb/Makefile
new file mode 100644
index 0000000..71e5727
--- /dev/null
+++ b/arch/arm/mach-bcmstb/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2018 Cisco Systems, Inc.
+#
+# Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+#
+
+obj-y := lowlevel_init.o
diff --git a/arch/arm/mach-bcmstb/include/mach/gpio.h b/arch/arm/mach-bcmstb/include/mach/gpio.h
new file mode 100644
index 0000000..bffecf9
--- /dev/null
+++ b/arch/arm/mach-bcmstb/include/mach/gpio.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#ifndef _BCMSTB_GPIO_H
+#define _BCMSTB_GPIO_H
+
+#endif /* _BCMSTB_GPIO_H */
diff --git a/arch/arm/mach-bcmstb/include/mach/hardware.h b/arch/arm/mach-bcmstb/include/mach/hardware.h
new file mode 100644
index 0000000..76f799d
--- /dev/null
+++ b/arch/arm/mach-bcmstb/include/mach/hardware.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#ifndef _BCMSTB_HARDWARE_H
+#define _BCMSTB_HARDWARE_H
+
+#endif /* _BCMSTB_HARDWARE_H */
diff --git a/arch/arm/mach-bcmstb/include/mach/prior_stage.h b/arch/arm/mach-bcmstb/include/mach/prior_stage.h
new file mode 100644
index 0000000..6c36c68
--- /dev/null
+++ b/arch/arm/mach-bcmstb/include/mach/prior_stage.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#ifndef _BCMSTB_PRIOR_STAGE_H
+#define _BCMSTB_PRIOR_STAGE_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+struct bcmstb_boot_parameters {
+ u32 r0;
+ u32 r1;
+ u32 r2;
+ u32 r3;
+ u32 sp;
+ u32 lr;
+};
+
+extern struct bcmstb_boot_parameters bcmstb_boot_parameters;
+
+extern phys_addr_t prior_stage_fdt_address;
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _BCMSTB_PRIOR_STAGE_H */
diff --git a/arch/arm/mach-bcmstb/include/mach/sdhci.h b/arch/arm/mach-bcmstb/include/mach/sdhci.h
new file mode 100644
index 0000000..243783d
--- /dev/null
+++ b/arch/arm/mach-bcmstb/include/mach/sdhci.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#ifndef _BCMSTB_SDHCI_H
+#define _BCMSTB_SDHCI_H
+
+#include <linux/types.h>
+
+int bcmstb_sdhci_init(phys_addr_t regbase);
+
+#endif /* _BCMSTB_SDHCI_H */
diff --git a/arch/arm/mach-bcmstb/include/mach/timer.h b/arch/arm/mach-bcmstb/include/mach/timer.h
new file mode 100644
index 0000000..d05b4d6
--- /dev/null
+++ b/arch/arm/mach-bcmstb/include/mach/timer.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#ifndef _BCMSTB_TIMER_H
+#define _BCMSTB_TIMER_H
+
+unsigned long timer_read_counter(void);
+
+#endif /* _BCMSTB_TIMER_H */
diff --git a/arch/arm/mach-bcmstb/lowlevel_init.S b/arch/arm/mach-bcmstb/lowlevel_init.S
new file mode 100644
index 0000000..aa81f70
--- /dev/null
+++ b/arch/arm/mach-bcmstb/lowlevel_init.S
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2018 Cisco Systems, Inc.
+ *
+ * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
+ */
+
+#include <linux/linkage.h>
+
+ENTRY(save_boot_params)
+ ldr r6, =bcmstb_boot_parameters
+ str r0, [r6, #0]
+ str r1, [r6, #4]
+ str r2, [r6, #8]
+ str r3, [r6, #12]
+ str sp, [r6, #16]
+ str lr, [r6, #20]
+ ldr r6, =prior_stage_fdt_address
+ str r2, [r6]
+ b save_boot_params_ret
+ENDPROC(save_boot_params)