From 29b9a218d0be8e207ddeacdc68eb1e4b7f54b85a Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Fri, 26 Feb 2010 10:25:28 +0000 Subject: [PATCH] omap: pass the reboot command to the boot loader This patch follows the commit be093beb608edf821b45fe00a8a080fb5c6ed4af by Russell King: OMAP wishes to pass state to the boot loader upon reboot in order to instruct it whether to wait for USB-based reflashing or not. There is already a facility to do this via the reboot() syscall, except we ignore the string passed to machine_restart(). The patch adds the missing parameter to omap1_arch_reset() and omap_prcm_arch_reset(), and modifies the latter to pass the reboot command parameter to the boot loader instead of reboot mode (which is for kernel internal use only and cannot be modified by the userspace). Signed-off-by: Aaro Koskinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/prcm.c | 4 ++-- arch/arm/plat-omap/include/plat/prcm.h | 2 +- arch/arm/plat-omap/include/plat/system.h | 6 +++--- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c index 81872aa..9537f6f 100644 --- a/arch/arm/mach-omap2/prcm.c +++ b/arch/arm/mach-omap2/prcm.c @@ -133,7 +133,7 @@ u32 omap_prcm_get_reset_sources(void) EXPORT_SYMBOL(omap_prcm_get_reset_sources); /* Resets clock rates and reboots the system. Only called from system.h */ -void omap_prcm_arch_reset(char mode) +void omap_prcm_arch_reset(char mode, const char *cmd) { s16 prcm_offs = 0; @@ -145,7 +145,7 @@ void omap_prcm_arch_reset(char mode) u32 l; prcm_offs = OMAP3430_GR_MOD; - l = ('B' << 24) | ('M' << 16) | mode; + l = ('B' << 24) | ('M' << 16) | (cmd ? (u8)*cmd : 0); /* Reserve the first word in scratchpad for communicating * with the boot ROM. A pointer to a data structure * describing the boot process can be stored there, diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-omap/include/plat/prcm.h index d6a0e27..9fbd914 100644 --- a/arch/arm/plat-omap/include/plat/prcm.h +++ b/arch/arm/plat-omap/include/plat/prcm.h @@ -24,7 +24,7 @@ #define __ASM_ARM_ARCH_OMAP_PRCM_H u32 omap_prcm_get_reset_sources(void); -void omap_prcm_arch_reset(char mode); +void omap_prcm_arch_reset(char mode, const char *cmd); int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest, const char *name); diff --git a/arch/arm/plat-omap/include/plat/system.h b/arch/arm/plat-omap/include/plat/system.h index c58a4ef..d0a119f 100644 --- a/arch/arm/plat-omap/include/plat/system.h +++ b/arch/arm/plat-omap/include/plat/system.h @@ -22,7 +22,7 @@ static inline void arch_idle(void) cpu_do_idle(); } -static inline void omap1_arch_reset(char mode) +static inline void omap1_arch_reset(char mode, const char *cmd) { /* * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28 @@ -43,9 +43,9 @@ static inline void omap1_arch_reset(char mode) static inline void arch_reset(char mode, const char *cmd) { if (!cpu_class_is_omap2()) - omap1_arch_reset(mode); + omap1_arch_reset(mode, cmd); else - omap_prcm_arch_reset(mode); + omap_prcm_arch_reset(mode, cmd); } #endif -- 2.7.4