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ARM: OMAP: Warn if omap_ioremap is called before SoC detection 

We don't have cpu_is_omapxxxx SoC detection initialized until
SoC detection is initialized from init_early.

Note that with the common map_io we should no longer need
cpu_is_omapxxxx for ioremap.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2011-10-05 17:22:39 -07:00
parent 4c3cf90117
commit 8aca3ab586
4 changed files with 14 additions and 0 deletions
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1
arch/arm/mach-omap1/io.c
View File

@ -121,6 +121,7 @@ void __init omap16xx_map_io(void)
void omap1_init_early(void)
{
omap_check_revision();
omap_ioremap_init();
/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
* on a Posted Write in the TIPB Bridge".

1
arch/arm/mach-omap2/io.c
View File

@ -323,6 +323,7 @@ void __iomem *omap_irq_base;
static void __init omap_common_init_early(void)
{
omap2_check_revision();
omap_ioremap_init();
}
static void __init omap_hwmod_init_postsetup(void)

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

@ -247,6 +247,8 @@
* NOTE: Please use ioremap + __raw_read/write where possible instead of these
*/
void omap_ioremap_init(void);
extern u8 omap_readb(u32 pa);
extern u16 omap_readw(u32 pa);
extern u32 omap_readl(u32 pa);

10
arch/arm/plat-omap/io.c
View File

@ -23,11 +23,16 @@
#define BETWEEN(p,st,sz) ((p) >= (st) && (p) < ((st) + (sz)))
#define XLATE(p,pst,vst) ((void __iomem *)((p) - (pst) + (vst)))
static int initialized;
/*
* Intercept ioremap() requests for addresses in our fixed mapping regions.
*/
void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
{
WARN(!initialized, "Do not use ioremap before init_early\n");
#ifdef CONFIG_ARCH_OMAP1
if (cpu_class_is_omap1()) {
if (BETWEEN(p, OMAP1_IO_PHYS, OMAP1_IO_SIZE))
@ -139,3 +144,8 @@ void omap_iounmap(volatile void __iomem *addr)
__iounmap(addr);
}
EXPORT_SYMBOL(omap_iounmap);
void __init omap_ioremap_init(void)
{
initialized++;
}