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omap: pass the reboot command to the boot loader

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This patch follows the commit be093beb60
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 <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Aaro Koskinen 2010-02-26 10:25:28 +00:00 committed by Tony Lindgren
parent 26e4248359
commit 29b9a218d0
3 changed files with 6 additions and 6 deletions
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4
arch/arm/mach-omap2/prcm.c
View File

@ -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,

2
arch/arm/plat-omap/include/plat/prcm.h
View File

@ -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);

6
arch/arm/plat-omap/include/plat/system.h
View File

@ -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