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authorStephan Linz <linz@li-pro.net>2012-07-01 16:44:37 +0200
committerMichal Simek <monstr@monstr.eu>2012-07-09 10:44:26 +0200
commit8f371b18503763b246b4fefa78da1b049a74ef48 (patch)
tree759c759037e2f6689584a806844241d1d7713b91 /include/configs/microblaze-generic.h
parent7cfb13a7f4d54d4f8989cc6214b4b3b8d5861d18 (diff)
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microblaze: Expand and correct configuration comments
- fix CONFIG_SYS_MALLOC_BASE from 0x11FB_F000 to 0x13EF_F000 - add new size calculation for CONFIG_SYS_MONITOR_LEN and CONFIG_SYS_MALLOC_LEN derived from SIZE - change CONFIG_SYS_MONITOR_BASE and CONFIG_SYS_MALLOC_BASE calculation to a symbolic equation with the corresponding _LEN definitions - add a "CFI flash memory layout - Example" comment Signed-off-by: Stephan Linz <linz@li-pro.net>
Diffstat (limited to 'include/configs/microblaze-generic.h')
-rw-r--r--include/configs/microblaze-generic.h36
1 files changed, 29 insertions, 7 deletions
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 2fd2279..1de6c69 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -122,15 +122,19 @@
/*
* memory layout - Example
- * CONFIG_SYS_TEXT_BASE = 0x1200_0000;
+ * CONFIG_SYS_TEXT_BASE = 0x1200_0000; defined in config.mk
* CONFIG_SYS_SRAM_BASE = 0x1000_0000;
- * CONFIG_SYS_SRAM_SIZE = 0x0400_0000;
+ * CONFIG_SYS_SRAM_SIZE = 0x0400_0000; 64MB
+ *
+ * CONFIG_SYS_MONITOR_LEN = 0x40000
+ * CONFIG_SYS_MALLOC_LEN = 3 * CONFIG_SYS_MONITOR_LEN = 0xC0000
*
* CONFIG_SYS_GBL_DATA_OFFSET = 0x1000_0000 + 0x0400_0000 - 0x1000 = 0x13FF_F000
- * CONFIG_SYS_MONITOR_BASE = 0x13FF_F000 - 0x40000 = 0x13FB_F000
- * CONFIG_SYS_MALLOC_BASE = 0x13FB_F000 - 0x40000 = 0x13F7_F000
+ * CONFIG_SYS_MONITOR_BASE = 0x13FF_F000 - CONFIG_SYS_MONITOR_LEN = 0x13FB_F000
+ * CONFIG_SYS_MALLOC_BASE = 0x13FB_F000 - CONFIG_SYS_MALLOC_LEN = 0x13EF_F000
*
* 0x1000_0000 CONFIG_SYS_SDRAM_BASE
+ * MEMTEST_AREA 64kB
* FREE
* 0x1200_0000 CONFIG_SYS_TEXT_BASE
* U-BOOT code
@@ -138,9 +142,9 @@
* FREE
*
* STACK
- * 0x13F7_F000 CONFIG_SYS_MALLOC_BASE
- * MALLOC_AREA 256kB Alloc
- * 0x11FB_F000 CONFIG_SYS_MONITOR_BASE
+ * 0x13EF_F000 CONFIG_SYS_MALLOC_BASE
+ * MALLOC_AREA 768kB Alloc
+ * 0x13FB_F000 CONFIG_SYS_MONITOR_BASE
* MONITOR_CODE 256kB Env
* 0x13FF_F000 CONFIG_SYS_GBL_DATA_OFFSET
* GLOBAL_DATA 4kB bd, gd
@@ -173,6 +177,24 @@
/* stack */
#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_MALLOC_BASE
+/*
+ * CFI flash memory layout - Example
+ * CONFIG_SYS_FLASH_BASE = 0x2200_0000;
+ * CONFIG_SYS_FLASH_SIZE = 0x0080_0000; 8MB
+ *
+ * SECT_SIZE = 0x20000; 128kB is one sector
+ * CONFIG_ENV_SIZE = SECT_SIZE; 128kB environment store
+ *
+ * 0x2200_0000 CONFIG_SYS_FLASH_BASE
+ * FREE 256kB
+ * 0x2204_0000 CONFIG_ENV_ADDR
+ * ENV_AREA 128kB
+ * 0x2206_0000
+ * FREE
+ * 0x2280_0000 CONFIG_SYS_FLASH_BASE + CONFIG_SYS_FLASH_SIZE
+ *
+ */
+
#ifdef FLASH
# define CONFIG_SYS_FLASH_BASE XILINX_FLASH_START
# define CONFIG_SYS_FLASH_SIZE XILINX_FLASH_SIZE