From fec4816387a978e651da74c83bcdd5019a6d024c Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 2 Feb 2016 21:11:31 +0900 Subject: ARM: uniphier: support USB boot mode for ProXstream2 / PH1-LD6b SoC The USB boot code is too fat and complicated to be included in SPL (at least for now). So, it was implemented as a separate project (what we call USB-loader). The expected boot sequence is as follows: Boot ROM -> USB-loader -> SPL -> U-Boot proper The USB-loader loads the SPL and U-Boot proper from a USB memory onto the locked L2 cache. Then, SPL needs to copy the U-Boot proper to DRAM, so this mode looks like a NOR boot from the view of SPL. However, we want to distinguish between (genuine) NOR boot and USB boot in some places. Signed-off-by: Masahiro Yamada --- arch/arm/mach-uniphier/boot-mode/boot-device.h | 2 ++ arch/arm/mach-uniphier/boot-mode/boot-mode-proxstream2.c | 3 +++ arch/arm/mach-uniphier/boot-mode/boot-mode.c | 11 ++++++++++- 3 files changed, 15 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-uniphier/boot-mode') diff --git a/arch/arm/mach-uniphier/boot-mode/boot-device.h b/arch/arm/mach-uniphier/boot-mode/boot-device.h index 2ab5a535fa..1c59aaa606 100644 --- a/arch/arm/mach-uniphier/boot-mode/boot-device.h +++ b/arch/arm/mach-uniphier/boot-mode/boot-device.h @@ -22,4 +22,6 @@ void ph1_ld4_boot_mode_show(void); void ph1_pro5_boot_mode_show(void); void proxstream2_boot_mode_show(void); +u32 spl_boot_device_raw(void); + #endif /* _ASM_BOOT_DEVICE_H_ */ diff --git a/arch/arm/mach-uniphier/boot-mode/boot-mode-proxstream2.c b/arch/arm/mach-uniphier/boot-mode/boot-mode-proxstream2.c index 3769ec555b..1b0c183808 100644 --- a/arch/arm/mach-uniphier/boot-mode/boot-mode-proxstream2.c +++ b/arch/arm/mach-uniphier/boot-mode/boot-mode-proxstream2.c @@ -55,6 +55,9 @@ u32 proxstream2_boot_device(void) { int boot_mode; + if (readl(SG_PINMON0) & BIT(6)) + return BOOT_DEVICE_USB; + boot_mode = get_boot_mode_sel(); return boot_device_table[boot_mode].type; diff --git a/arch/arm/mach-uniphier/boot-mode/boot-mode.c b/arch/arm/mach-uniphier/boot-mode/boot-mode.c index 0c5749badb..935e551472 100644 --- a/arch/arm/mach-uniphier/boot-mode/boot-mode.c +++ b/arch/arm/mach-uniphier/boot-mode/boot-mode.c @@ -11,7 +11,7 @@ #include "../soc-info.h" #include "boot-device.h" -u32 spl_boot_device(void) +u32 spl_boot_device_raw(void) { if (boot_is_swapped()) return BOOT_DEVICE_NOR; @@ -43,3 +43,12 @@ u32 spl_boot_device(void) return BOOT_DEVICE_NONE; } } + +u32 spl_boot_device(void) +{ + u32 ret; + + ret = spl_boot_device_raw(); + + return ret == BOOT_DEVICE_USB ? BOOT_DEVICE_NOR : ret; +} -- cgit v1.2.1