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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-04-30 17:35:48 -0700
committerKevin Hilman <khilman@deeprootsystems.com>2009-05-28 15:18:12 -0700
commit0d04eb47054f685b23033ed6ceadfb20db77c5b3 (patch)
tree3a3de44b01ac71a80f970ddf80f8d1ca28c3e2f6 /arch/arm/mach-davinci/include/mach/common.h
parentb79dbdefd2be0980c58b5e36fdc23eb14a7caab4 (diff)
davinci: soc-specific SRAM setup
Package on-chip SRAM. It's always accessible from the ARM, so set up a standardized virtual address mapping into a 128 KiB area that's reserved for platform use. In some cases (dm6467) the physical addresses used for EDMA are not the same as the ones used by the ARM ... so record that info separately in the SOC data, for chips (unlike the OMAP-L137) where SRAM may be used with EDMA. Other blocks of SRAM, such as the ETB buffer or DSP L1/L2 RAM, may be unused/available on some system. They are ignored here. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/common.h')
-rw-r--r--arch/arm/mach-davinci/include/mach/common.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h
index 715528f0dbd..a1f03b606d8 100644
--- a/arch/arm/mach-davinci/include/mach/common.h
+++ b/arch/arm/mach-davinci/include/mach/common.h
@@ -66,10 +66,16 @@ struct davinci_soc_info {
unsigned gpio_irq;
struct platform_device *serial_dev;
struct emac_platform_data *emac_pdata;
+ dma_addr_t sram_dma;
+ unsigned sram_len;
};
extern struct davinci_soc_info davinci_soc_info;
extern void davinci_common_init(struct davinci_soc_info *soc_info);
+/* standard place to map on-chip SRAMs; they *may* support DMA */
+#define SRAM_VIRT 0xfffe0000
+#define SRAM_SIZE SZ_128K
+
#endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */