diff options
Diffstat (limited to 'include/asm-avr32')
| -rw-r--r-- | include/asm-avr32/arch-at32ap700x/memory-map.h | 20 | ||||
| -rw-r--r-- | include/asm-avr32/sdram.h | 27 |
2 files changed, 42 insertions, 5 deletions
diff --git a/include/asm-avr32/arch-at32ap700x/memory-map.h b/include/asm-avr32/arch-at32ap700x/memory-map.h index 5513e88..6592c03 100644 --- a/include/asm-avr32/arch-at32ap700x/memory-map.h +++ b/include/asm-avr32/arch-at32ap700x/memory-map.h @@ -22,6 +22,26 @@ #ifndef __AT32AP7000_MEMORY_MAP_H__ #define __AT32AP7000_MEMORY_MAP_H__ +/* Internal and external memories */ +#define EBI_SRAM_CS0_BASE 0x00000000 +#define EBI_SRAM_CS0_SIZE 0x04000000 +#define EBI_SRAM_CS4_BASE 0x04000000 +#define EBI_SRAM_CS4_SIZE 0x04000000 +#define EBI_SRAM_CS2_BASE 0x08000000 +#define EBI_SRAM_CS2_SIZE 0x04000000 +#define EBI_SRAM_CS3_BASE 0x0c000000 +#define EBI_SRAM_CS3_SIZE 0x04000000 +#define EBI_SRAM_CS1_BASE 0x10000000 +#define EBI_SRAM_CS1_SIZE 0x10000000 +#define EBI_SRAM_CS5_BASE 0x20000000 +#define EBI_SRAM_CS5_SIZE 0x04000000 + +#define EBI_SDRAM_BASE EBI_SRAM_CS1_BASE +#define EBI_SDRAM_SIZE EBI_SRAM_CS1_SIZE + +#define INTERNAL_SRAM_BASE 0x24000000 +#define INTERNAL_SRAM_SIZE 0x00008000 + /* Devices on the High Speed Bus (HSB) */ #define LCDC_BASE 0xFF000000 #define DMAC_BASE 0xFF200000 diff --git a/include/asm-avr32/sdram.h b/include/asm-avr32/sdram.h index 833af6e..7bdefc1 100644 --- a/include/asm-avr32/sdram.h +++ b/include/asm-avr32/sdram.h @@ -22,15 +22,32 @@ #ifndef __ASM_AVR32_SDRAM_H #define __ASM_AVR32_SDRAM_H -struct sdram_info { - unsigned long phys_addr; - unsigned int row_bits, col_bits, bank_bits; - unsigned int cas, twr, trc, trp, trcd, tras, txsr; +struct sdram_config { + /* Number of data bits. */ + enum { + SDRAM_DATA_16BIT, + SDRAM_DATA_32BIT, + } data_bits; + + /* Number of address bits */ + uint8_t row_bits, col_bits, bank_bits; + + /* SDRAM timings in cycles */ + uint8_t cas, twr, trc, trp, trcd, tras, txsr; /* SDRAM refresh period in cycles */ unsigned long refresh_period; }; -extern unsigned long sdram_init(const struct sdram_info *info); +/* + * Attempt to initialize the SDRAM controller using the specified + * parameters. Return the expected size of the memory area based on + * the number of address and data bits. + * + * The caller should verify that the configuration is correct by + * running a memory test, e.g. get_ram_size(). + */ +extern unsigned long sdram_init(void *sdram_base, + const struct sdram_config *config); #endif /* __ASM_AVR32_SDRAM_H */ |