avr32: Rework SDRAM initialization code
This cleans up the SDRAM initialization and related code a bit, and
allows faster booting.
* Add definitions for EBI and internal SRAM to asm/arch/memory-map.h
* Remove memory test from sdram_init() and make caller responsible
for verifying the SDRAM and determining its size.
* Remove base_address member from struct sdram_config (was sdram_info)
* Add data_bits member to struct sdram_config and kill CFG_SDRAM_16BIT
* Add support for a common STK1000 hack: 16MB SDRAM instead of 8.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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 */
diff --git a/include/configs/atngw100.h b/include/configs/atngw100.h
index 313298a..3fc9975 100644
--- a/include/configs/atngw100.h
+++ b/include/configs/atngw100.h
@@ -24,6 +24,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/arch/memory-map.h>
+
#define CONFIG_AVR32 1
#define CONFIG_AT32AP 1
#define CONFIG_AT32AP7000 1
@@ -140,11 +142,9 @@
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_INTRAM_BASE 0x24000000
-#define CFG_INTRAM_SIZE 0x8000
-
-#define CFG_SDRAM_BASE 0x10000000
-#define CFG_SDRAM_16BIT 1
+#define CFG_INTRAM_BASE INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE EBI_SDRAM_BASE
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_SIZE 65536
@@ -153,17 +153,10 @@
#define CFG_INIT_SP_ADDR (CFG_INTRAM_BASE + CFG_INTRAM_SIZE)
#define CFG_MALLOC_LEN (256*1024)
-#define CFG_MALLOC_END \
- ({ \
- DECLARE_GLOBAL_DATA_PTR; \
- CFG_SDRAM_BASE + gd->sdram_size; \
- })
-#define CFG_MALLOC_START (CFG_MALLOC_END - CFG_MALLOC_LEN)
-
#define CFG_DMA_ALLOC_LEN (16384)
/* Allow 4MB for the kernel run-time image */
-#define CFG_LOAD_ADDR (CFG_SDRAM_BASE + 0x00400000)
+#define CFG_LOAD_ADDR (EBI_SDRAM_BASE + 0x00400000)
#define CFG_BOOTPARAMS_LEN (16 * 1024)
/* Other configuration settings that shouldn't have to change all that often */
@@ -173,7 +166,7 @@
#define CFG_PBSIZE (CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
#define CFG_LONGHELP 1
-#define CFG_MEMTEST_START CFG_SDRAM_BASE
+#define CFG_MEMTEST_START EBI_SDRAM_BASE
#define CFG_MEMTEST_END (CFG_MEMTEST_START + 0x1f00000)
#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
diff --git a/include/configs/atstk1002.h b/include/configs/atstk1002.h
index f652b28..ba18eb6 100644
--- a/include/configs/atstk1002.h
+++ b/include/configs/atstk1002.h
@@ -24,6 +24,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/arch/memory-map.h>
+
#define CONFIG_AVR32 1
#define CONFIG_AT32AP 1
#define CONFIG_AT32AP7000 1
@@ -170,10 +172,9 @@
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_INTRAM_BASE 0x24000000
-#define CFG_INTRAM_SIZE 0x8000
-
-#define CFG_SDRAM_BASE 0x10000000
+#define CFG_INTRAM_BASE INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE EBI_SDRAM_BASE
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_SIZE 65536
@@ -185,7 +186,7 @@
#define CFG_DMA_ALLOC_LEN (16384)
/* Allow 4MB for the kernel run-time image */
-#define CFG_LOAD_ADDR (CFG_SDRAM_BASE + 0x00400000)
+#define CFG_LOAD_ADDR (EBI_SDRAM_BASE + 0x00400000)
#define CFG_BOOTPARAMS_LEN (16 * 1024)
/* Other configuration settings that shouldn't have to change all that often */
@@ -195,7 +196,7 @@
#define CFG_PBSIZE (CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
#define CFG_LONGHELP 1
-#define CFG_MEMTEST_START CFG_SDRAM_BASE
+#define CFG_MEMTEST_START EBI_SDRAM_BASE
#define CFG_MEMTEST_END (CFG_MEMTEST_START + 0x700000)
#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
diff --git a/include/configs/atstk1003.h b/include/configs/atstk1003.h
index 2d981cc..a528ddf 100644
--- a/include/configs/atstk1003.h
+++ b/include/configs/atstk1003.h
@@ -24,6 +24,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/arch/memory-map.h>
+
#define CONFIG_AVR32 1
#define CONFIG_AT32AP 1
#define CONFIG_AT32AP7001 1
@@ -153,10 +155,9 @@
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_INTRAM_BASE 0x24000000
-#define CFG_INTRAM_SIZE 0x8000
-
-#define CFG_SDRAM_BASE 0x10000000
+#define CFG_INTRAM_BASE INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE EBI_SDRAM_BASE
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_SIZE 65536
@@ -167,7 +168,7 @@
#define CFG_MALLOC_LEN (256*1024)
/* Allow 4MB for the kernel run-time image */
-#define CFG_LOAD_ADDR (CFG_SDRAM_BASE + 0x00400000)
+#define CFG_LOAD_ADDR (EBI_SDRAM_BASE + 0x00400000)
#define CFG_BOOTPARAMS_LEN (16 * 1024)
/* Other configuration settings that shouldn't have to change all that often */
@@ -177,7 +178,7 @@
#define CFG_PBSIZE (CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
#define CFG_LONGHELP 1
-#define CFG_MEMTEST_START CFG_SDRAM_BASE
+#define CFG_MEMTEST_START EBI_SDRAM_BASE
#define CFG_MEMTEST_END (CFG_MEMTEST_START + 0x700000)
#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
diff --git a/include/configs/atstk1004.h b/include/configs/atstk1004.h
index 235c1cc..fc9585e 100644
--- a/include/configs/atstk1004.h
+++ b/include/configs/atstk1004.h
@@ -24,6 +24,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/arch/memory-map.h>
+
#define CONFIG_AVR32 1
#define CONFIG_AT32AP 1
#define CONFIG_AT32AP7002 1
@@ -153,11 +155,9 @@
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_INTRAM_BASE 0x24000000
-#define CFG_INTRAM_SIZE 0x8000
-
-#define CFG_SDRAM_BASE 0x10000000
-#define CFG_SDRAM_16BIT 1
+#define CFG_INTRAM_BASE INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE EBI_SDRAM_BASE
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_SIZE 65536
@@ -168,7 +168,7 @@
#define CFG_MALLOC_LEN (256*1024)
/* Allow 2MB for the kernel run-time image */
-#define CFG_LOAD_ADDR (CFG_SDRAM_BASE + 0x00200000)
+#define CFG_LOAD_ADDR (EBI_SDRAM_BASE + 0x00200000)
#define CFG_BOOTPARAMS_LEN (16 * 1024)
/* Other configuration settings that shouldn't have to change all that often */
@@ -178,7 +178,7 @@
#define CFG_PBSIZE (CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
#define CFG_LONGHELP 1
-#define CFG_MEMTEST_START CFG_SDRAM_BASE
+#define CFG_MEMTEST_START EBI_SDRAM_BASE
#define CFG_MEMTEST_END (CFG_MEMTEST_START + 0x700000)
#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }
diff --git a/include/configs/atstk1006.h b/include/configs/atstk1006.h
index c606d5d..9fd49a5 100644
--- a/include/configs/atstk1006.h
+++ b/include/configs/atstk1006.h
@@ -24,6 +24,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
+#include <asm/arch/memory-map.h>
+
#define CONFIG_AVR32 1
#define CONFIG_AT32AP 1
#define CONFIG_AT32AP7000 1
@@ -170,10 +172,9 @@
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_INTRAM_BASE 0x24000000
-#define CFG_INTRAM_SIZE 0x8000
-
-#define CFG_SDRAM_BASE 0x10000000
+#define CFG_INTRAM_BASE INTERNAL_SRAM_BASE
+#define CFG_INTRAM_SIZE INTERNAL_SRAM_SIZE
+#define CFG_SDRAM_BASE EBI_SDRAM_BASE
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_SIZE 65536
@@ -185,7 +186,7 @@
#define CFG_DMA_ALLOC_LEN (16384)
/* Allow 4MB for the kernel run-time image */
-#define CFG_LOAD_ADDR (CFG_SDRAM_BASE + 0x00400000)
+#define CFG_LOAD_ADDR (EBI_SDRAM_BASE + 0x00400000)
#define CFG_BOOTPARAMS_LEN (16 * 1024)
/* Other configuration settings that shouldn't have to change all that often */
@@ -195,7 +196,7 @@
#define CFG_PBSIZE (CFG_CBSIZE + sizeof(CFG_PROMPT) + 16)
#define CFG_LONGHELP 1
-#define CFG_MEMTEST_START CFG_SDRAM_BASE
+#define CFG_MEMTEST_START EBI_SDRAM_BASE
#define CFG_MEMTEST_END (CFG_MEMTEST_START + 0x3f00000)
#define CFG_BAUDRATE_TABLE { 115200, 38400, 19200, 9600, 2400 }