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ARM: OMAP2: Use omap_globals for CPU detection for multi-omap

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This allows to get rid of the ifdefs and will allow simpler
CPU detection in the future.

Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2008-10-06 15:49:16 +03:00
parent 1835f1d720
commit 0e56484869
4 changed files with 34 additions and 16 deletions
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39
arch/arm/mach-omap2/id.c
View File

@ -17,24 +17,15 @@
#include <asm/io.h>
#include <mach/common.h>
#include <mach/control.h>
#include <mach/cpu.h>
#if defined(CONFIG_ARCH_OMAP2420)
#define TAP_BASE IO_ADDRESS(0x48014000)
#elif defined(CONFIG_ARCH_OMAP2430)
#define TAP_BASE IO_ADDRESS(0x4900A000)
#elif defined(CONFIG_ARCH_OMAP34XX)
#define TAP_BASE IO_ADDRESS(0x4830A000)
#endif
static u32 class;
static void __iomem *tap_base;
static u16 tap_prod_id;
#define OMAP_TAP_IDCODE 0x0204
#if defined(CONFIG_ARCH_OMAP34XX)
#define OMAP_TAP_PROD_ID 0x0210
#else
#define OMAP_TAP_PROD_ID 0x0208
#endif
#define OMAP_TAP_DIE_ID_0 0x0218
#define OMAP_TAP_DIE_ID_1 0x021C
#define OMAP_TAP_DIE_ID_2 0x0220
@ -93,18 +84,24 @@ static u32 __init read_tap_reg(int reg)
* it means its Cortex r0p0 which is 3430 ES1
*/
if ((((cpuid >> 4) & 0xFFF) == 0xC08) && ((cpuid & 0xF) == 0x0)) {
if (reg == tap_prod_id) {
regval = 0x000F00F0;
goto out;
}
switch (reg) {
case OMAP_TAP_IDCODE : regval = 0x0B7AE02F; break;
/* Making DevType as 0xF in ES1 to differ from ES2 */
case OMAP_TAP_PROD_ID : regval = 0x000F00F0; break;
case OMAP_TAP_DIE_ID_0: regval = 0x01000000; break;
case OMAP_TAP_DIE_ID_1: regval = 0x1012d687; break;
case OMAP_TAP_DIE_ID_2: regval = 0x00000000; break;
case OMAP_TAP_DIE_ID_3: regval = 0x2d2c0000; break;
}
} else
regval = __raw_readl(TAP_BASE + reg);
regval = __raw_readl(tap_base + reg);
out:
return regval;
}
@ -203,7 +200,7 @@ void __init omap2_check_revision(void)
u8 rev;
idcode = read_tap_reg(OMAP_TAP_IDCODE);
prod_id = read_tap_reg(OMAP_TAP_PROD_ID);
prod_id = read_tap_reg(tap_prod_id);
hawkeye = (idcode >> 12) & 0xffff;
rev = (idcode >> 28) & 0x0f;
dev_type = (prod_id >> 16) & 0x0f;
@ -268,3 +265,13 @@ void __init omap2_check_revision(void)
}
void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
{
class = omap2_globals->class;
tap_base = omap2_globals->tap;
if (class == 0x3430)
tap_prod_id = 0x0210;
else
tap_prod_id = 0x0208;
}

4
arch/arm/plat-omap/common.c
View File

@ -248,6 +248,7 @@ static struct omap_globals *omap2_globals;
static void __init __omap2_set_globals(void)
{
omap2_set_globals_tap(omap2_globals);
omap2_set_globals_memory(omap2_globals);
omap2_set_globals_control(omap2_globals);
omap2_set_globals_prcm(omap2_globals);
@ -258,6 +259,7 @@ static void __init __omap2_set_globals(void)
#if defined(CONFIG_ARCH_OMAP2420)
static struct omap_globals omap242x_globals = {
.class = OMAP242X_CLASS,
.tap = OMAP2_IO_ADDRESS(0x48014000),
.sdrc = OMAP2_IO_ADDRESS(OMAP2420_SDRC_BASE),
.sms = OMAP2_IO_ADDRESS(OMAP2420_SMS_BASE),
@ -276,6 +278,7 @@ void __init omap2_set_globals_242x(void)
#if defined(CONFIG_ARCH_OMAP2430)
static struct omap_globals omap243x_globals = {
.class = OMAP243X_CLASS,
.tap = OMAP2_IO_ADDRESS(0x4900a000),
.sdrc = OMAP2_IO_ADDRESS(OMAP243X_SDRC_BASE),
.sms = OMAP2_IO_ADDRESS(OMAP243X_SMS_BASE),
@ -294,6 +297,7 @@ void __init omap2_set_globals_243x(void)
#if defined(CONFIG_ARCH_OMAP3430)
static struct omap_globals omap343x_globals = {
.class = OMAP343X_CLASS,
.tap = OMAP2_IO_ADDRESS(0x4830A000),
.sdrc = OMAP2_IO_ADDRESS(OMAP343X_SDRC_BASE),
.sms = OMAP2_IO_ADDRESS(OMAP343X_SMS_BASE),

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

@ -50,6 +50,7 @@ static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
/* IO bases for various OMAP processors */
struct omap_globals {
u32 class; /* OMAP class to detect */
void __iomem *tap; /* Control module ID code */
void __iomem *sdrc; /* SDRAM Controller */
void __iomem *sms; /* SDRAM Memory Scheduler */
@ -63,6 +64,7 @@ void omap2_set_globals_243x(void);
void omap2_set_globals_343x(void);
/* These get called from omap2_set_globals_xxxx(), do not call these */
void omap2_set_globals_tap(struct omap_globals *);
void omap2_set_globals_memory(struct omap_globals *);
void omap2_set_globals_control(struct omap_globals *);
void omap2_set_globals_prcm(struct omap_globals *);

5
arch/arm/plat-omap/include/mach/cpu.h
View File

@ -346,9 +346,14 @@ IS_OMAP_TYPE(3430, 0x3430)
get_sil_revision(system_rev)
/* Various silicon macros defined here */
#define OMAP242X_CLASS 0x24200000
#define OMAP2420_REV_ES1_0 0x24200000
#define OMAP2420_REV_ES2_0 0x24201000
#define OMAP243X_CLASS 0x24300000
#define OMAP2430_REV_ES1_0 0x24300000
#define OMAP343X_CLASS 0x34300000
#define OMAP3430_REV_ES1_0 0x34300000
#define OMAP3430_REV_ES2_0 0x34301000
#define OMAP3430_REV_ES2_1 0x34302000