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Diffstat (limited to 'arch/arm/plat-omap/sram.c')
-rw-r--r--arch/arm/plat-omap/sram.c100
1 files changed, 25 insertions, 75 deletions
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 6af3d0b..8b28664 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -19,7 +19,6 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
-#include <linux/omapfb.h>
#include <asm/tlb.h>
#include <asm/cacheflush.h>
@@ -29,10 +28,8 @@
#include <plat/sram.h>
#include <plat/board.h>
#include <plat/cpu.h>
-#include <plat/vram.h>
#include "sram.h"
-#include "fb.h"
/* XXX These "sideways" includes are a sign that something is wrong */
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
@@ -41,16 +38,9 @@
#endif
#define OMAP1_SRAM_PA 0x20000000
-#define OMAP1_SRAM_VA VMALLOC_END
#define OMAP2_SRAM_PUB_PA (OMAP2_SRAM_PA + 0xf800)
-#define OMAP2_SRAM_VA 0xfe400000
-#define OMAP2_SRAM_PUB_VA (OMAP2_SRAM_VA + 0x800)
-#define OMAP3_SRAM_VA 0xfe400000
#define OMAP3_SRAM_PUB_PA (OMAP3_SRAM_PA + 0x8000)
-#define OMAP3_SRAM_PUB_VA (OMAP3_SRAM_VA + 0x8000)
-#define OMAP4_SRAM_VA 0xfe400000
#define OMAP4_SRAM_PUB_PA (OMAP4_SRAM_PA + 0x4000)
-#define OMAP4_SRAM_PUB_VA (OMAP4_SRAM_VA + 0x4000)
#if defined(CONFIG_ARCH_OMAP2PLUS)
#define SRAM_BOOTLOADER_SZ 0x00
@@ -73,9 +63,9 @@
#define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
static unsigned long omap_sram_start;
-static unsigned long omap_sram_base;
+static void __iomem *omap_sram_base;
static unsigned long omap_sram_size;
-static unsigned long omap_sram_ceil;
+static void __iomem *omap_sram_ceil;
/*
* Depending on the target RAMFS firewall setup, the public usable amount of
@@ -112,12 +102,9 @@ static int is_sram_locked(void)
*/
static void __init omap_detect_sram(void)
{
- unsigned long reserved;
-
if (cpu_class_is_omap2()) {
if (is_sram_locked()) {
if (cpu_is_omap34xx()) {
- omap_sram_base = OMAP3_SRAM_PUB_VA;
omap_sram_start = OMAP3_SRAM_PUB_PA;
if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) ||
(omap_type() == OMAP2_DEVICE_TYPE_SEC)) {
@@ -126,25 +113,20 @@ static void __init omap_detect_sram(void)
omap_sram_size = 0x8000; /* 32K */
}
} else if (cpu_is_omap44xx()) {
- omap_sram_base = OMAP4_SRAM_PUB_VA;
omap_sram_start = OMAP4_SRAM_PUB_PA;
omap_sram_size = 0xa000; /* 40K */
} else {
- omap_sram_base = OMAP2_SRAM_PUB_VA;
omap_sram_start = OMAP2_SRAM_PUB_PA;
omap_sram_size = 0x800; /* 2K */
}
} else {
if (cpu_is_omap34xx()) {
- omap_sram_base = OMAP3_SRAM_VA;
omap_sram_start = OMAP3_SRAM_PA;
omap_sram_size = 0x10000; /* 64K */
} else if (cpu_is_omap44xx()) {
- omap_sram_base = OMAP4_SRAM_VA;
omap_sram_start = OMAP4_SRAM_PA;
omap_sram_size = 0xe000; /* 56K */
} else {
- omap_sram_base = OMAP2_SRAM_VA;
omap_sram_start = OMAP2_SRAM_PA;
if (cpu_is_omap242x())
omap_sram_size = 0xa0000; /* 640K */
@@ -153,7 +135,6 @@ static void __init omap_detect_sram(void)
}
}
} else {
- omap_sram_base = OMAP1_SRAM_VA;
omap_sram_start = OMAP1_SRAM_PA;
if (cpu_is_omap7xx())
@@ -170,35 +151,14 @@ static void __init omap_detect_sram(void)
omap_sram_size = 0x4000;
}
}
- reserved = omapfb_reserve_sram(omap_sram_start, omap_sram_base,
- omap_sram_size,
- omap_sram_start + SRAM_BOOTLOADER_SZ,
- omap_sram_size - SRAM_BOOTLOADER_SZ);
- omap_sram_size -= reserved;
-
- reserved = omap_vram_reserve_sram(omap_sram_start, omap_sram_base,
- omap_sram_size,
- omap_sram_start + SRAM_BOOTLOADER_SZ,
- omap_sram_size - SRAM_BOOTLOADER_SZ);
- omap_sram_size -= reserved;
-
- omap_sram_ceil = omap_sram_base + omap_sram_size;
}
-static struct map_desc omap_sram_io_desc[] __initdata = {
- { /* .length gets filled in at runtime */
- .virtual = OMAP1_SRAM_VA,
- .pfn = __phys_to_pfn(OMAP1_SRAM_PA),
- .type = MT_MEMORY
- }
-};
-
/*
* Note that we cannot use ioremap for SRAM, as clock init needs SRAM early.
*/
static void __init omap_map_sram(void)
{
- unsigned long base;
+ int cached = 1;
if (omap_sram_size == 0)
return;
@@ -211,28 +171,18 @@ static void __init omap_map_sram(void)
* the ARM may attempt to write cache lines back to SDRAM
* which will cause the system to hang.
*/
- omap_sram_io_desc[0].type = MT_MEMORY_NONCACHED;
+ cached = 0;
}
- omap_sram_io_desc[0].virtual = omap_sram_base;
- base = omap_sram_start;
- base = ROUND_DOWN(base, PAGE_SIZE);
- omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
- omap_sram_io_desc[0].length = ROUND_DOWN(omap_sram_size, PAGE_SIZE);
- iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
-
- pr_info("SRAM: Mapped pa 0x%08llx to va 0x%08lx size: 0x%lx\n",
- (long long) __pfn_to_phys(omap_sram_io_desc[0].pfn),
- omap_sram_io_desc[0].virtual,
- omap_sram_io_desc[0].length);
+ omap_sram_start = ROUND_DOWN(omap_sram_start, PAGE_SIZE);
+ omap_sram_base = __arm_ioremap_exec(omap_sram_start, omap_sram_size,
+ cached);
+ if (!omap_sram_base) {
+ pr_err("SRAM: Could not map\n");
+ return;
+ }
- /*
- * Normally devicemaps_init() would flush caches and tlb after
- * mdesc->map_io(), but since we're called from map_io(), we
- * must do it here.
- */
- local_flush_tlb_all();
- flush_cache_all();
+ omap_sram_ceil = omap_sram_base + omap_sram_size;
/*
* Looks like we need to preserve some bootloader code at the
@@ -251,13 +201,18 @@ static void __init omap_map_sram(void)
*/
void *omap_sram_push_address(unsigned long size)
{
- if (size > (omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ))) {
+ unsigned long available, new_ceil = (unsigned long)omap_sram_ceil;
+
+ available = omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ);
+
+ if (size > available) {
pr_err("Not enough space in SRAM\n");
return NULL;
}
- omap_sram_ceil -= size;
- omap_sram_ceil = ROUND_DOWN(omap_sram_ceil, FNCPY_ALIGN);
+ new_ceil -= size;
+ new_ceil = ROUND_DOWN(new_ceil, FNCPY_ALIGN);
+ omap_sram_ceil = IOMEM(new_ceil);
return (void *)omap_sram_ceil;
}
@@ -394,20 +349,15 @@ void omap3_sram_restore_context(void)
}
#endif /* CONFIG_PM */
-static int __init omap34xx_sram_init(void)
-{
- _omap3_sram_configure_core_dpll =
- omap_sram_push(omap3_sram_configure_core_dpll,
- omap3_sram_configure_core_dpll_sz);
- omap_push_sram_idle();
- return 0;
-}
-#else
+#endif /* CONFIG_ARCH_OMAP3 */
+
static inline int omap34xx_sram_init(void)
{
+#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
+ omap3_sram_restore_context();
+#endif
return 0;
}
-#endif
int __init omap_sram_init(void)
{
generated by cgit v1.1 at 2024-04-19 05:51:00 +0000