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fix MMU table overwrite issue 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1007 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
qiuyiuestc 2010-10-10 11:50:44 +00:00
parent acfbfad25e
commit 809f8c5fd3
1 changed files with 5 additions and 5 deletions
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10
libcpu/arm/s3c24x0/mmu.c
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@ -16,14 +16,13 @@
#include <rtthread.h> #include <rtthread.h>
#include "s3c24x0.h" #include "s3c24x0.h"
// #define _MMUTT_STARTADDRESS 0x30080000 #define _MMUTT_STARTADDRESS 0x33FF0000
#define _MMUTT_STARTADDRESS 0x30400000
#define DESC_SEC (0x2|(1<<4)) #define DESC_SEC (0x2|(1<<4))
#define CB (3<<2) //cache_on, write_back #define CB (3<<2) //cache_on, write_back
#define CNB (2<<2) //cache_on, write_through #define CNB (2<<2) //cache_on, write_through
#define NCB (1<<2) //cache_off,WR_BUF on #define NCB (1<<2) //cache_off,WR_BUF on
#define NCNB (0<<2) //cache_off,WR_BUF off #define NCNB (0<<2) //cache_off,WR_BUF off
#define AP_RW (3<<10) //supervisor=RW, user=RW #define AP_RW (3<<10) //supervisor=RW, user=RW
#define AP_RO (2<<10) //supervisor=RW, user=RO #define AP_RO (2<<10) //supervisor=RW, user=RO
@ -367,9 +366,9 @@ void rt_hw_mmu_init(void)
mmu_setmtt(0x28000000,0x2ff00000,0x28000000,RW_NCNB); //bank5 mmu_setmtt(0x28000000,0x2ff00000,0x28000000,RW_NCNB); //bank5
//30f00000->30100000, 31000000->30200000 //30f00000->30100000, 31000000->30200000
mmu_setmtt(0x30000000,0x30100000,0x30000000,RW_CB); //bank6-1 mmu_setmtt(0x30000000,0x30100000,0x30000000,RW_CB); //bank6-1
mmu_setmtt(0x30200000,0x33e00000,0x30200000,RW_NCNB); //bank6-2 mmu_setmtt(0x30200000,0x33e00000,0x30200000,RW_CB); //bank6-2
mmu_setmtt(0x33f00000,0x33f00000,0x33f00000,RW_CB); //bank6-3 mmu_setmtt(0x33f00000,0x34000000,0x33f00000,RW_NCNB); //bank6-3
mmu_setmtt(0x38000000,0x3ff00000,0x38000000,RW_NCNB); //bank7 mmu_setmtt(0x38000000,0x3ff00000,0x38000000,RW_NCNB); //bank7
mmu_setmtt(0x40000000,0x47f00000,0x40000000,RW_NCNB); //SFR mmu_setmtt(0x40000000,0x47f00000,0x40000000,RW_NCNB); //SFR
@ -392,3 +391,4 @@ void rt_hw_mmu_init(void)
/* DCache should be turned on after mmu is turned on. */ /* DCache should be turned on after mmu is turned on. */
mmu_enable_dcache(); mmu_enable_dcache();
} }