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bsp: a53: xil_settlbattributes modified for addresses > 4GB

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This patch modifies xil_settlbattributes API to work with
addresses > 4GB by modifying the address masking value
appropriate for higher addresses lies beyond 4GB

Signed-off-by: Kinjal Pravinbhai Patel <patelki@xilinx.com>
Reviewed-by: Anirudha Sarangi   <anirudh@xilinx.com>
This commit is contained in:
Kinjal Pravinbhai Patel 2015-07-23 11:16:35 +05:30 • committed by Nava kishore Manne
parent f85e3a62b3
commit 363baf34d9
1 changed files with 16 additions and 7 deletions
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23
lib/bsp/standalone/src/cortexa53/64bit/xil_mmu.c
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@ -65,10 +65,15 @@
/************************** Constant Definitions *****************************/
#define BLOCK_SIZE_2MB 0x200000U
#define BLOCK_SIZE_1GB 0x40000000U
#define ADDRESS_LIMIT_4GB 0x100000000UL
/************************** Variable Definitions *****************************/
extern INTPTR MMUTableL1;
extern INTPTR MMUTableL2;
/************************** Function Prototypes ******************************/
/*****************************************************************************
*
@ -88,18 +93,22 @@ void Xil_SetTlbAttributes(INTPTR Addr, u64 attrib)
{
INTPTR *ptr;
INTPTR section;
u64 block_size;
/* if region is less than 4GB MMUTable level 2 need to be modified */
if(Addr<0x100000000){
section = Addr / 0x00200000U;
ptr = &MMUTableL2 + section;
*ptr = (Addr & (~0x001FFFFFU)) | attrib;
if(Addr < ADDRESS_LIMIT_4GB){
/* block size is 2MB for addressed < 4GB*/
block_size = BLOCK_SIZE_2MB;
section = Addr / block_size;
ptr = &MMUTableL2 + section;
}
/* if region is greater than 4GB MMUTable level 1 need to be modified */
else{
section = Addr / 0x40000000U;
ptr = &MMUTableL1 + section;
*ptr = (Addr & (~0x3FFFFFFFU)) | attrib;
/* block size is 1GB for addressed > 4GB */
block_size = BLOCK_SIZE_1GB;
section = Addr / block_size;
ptr = &MMUTableL1 + section;
}
*ptr = (Addr & (~(block_size-1))) | attrib;
Xil_DCacheFlush();
mtcptlbi(ALLE3);