stv0g/embeddedsw
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

bsp: r5: modified Init_MPU for the case when starting DDR>2GB

Browse source 
This patch modifies mpu settings in Init_MPU to truncate the
DDR size to 2Gb when DDR located at 0x0 is greater than 2GB
in the hdf

Signed-off-by: Kinjal Pravinbhai Patel <patelki@xilinx.com>
Acked-by: Anirudha Sarangi <anirudh@xilinx.com>
This commit is contained in:
Kinjal Pravinbhai Patel 2015-10-08 17:19:44 +05:30 • committed by Nava kishore Manne
parent ed9789b2a9
commit 20f9a33b64
1 changed files with 10 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
lib/bsp/standalone/src/cortexr5/mpu.c
View file

@ -130,12 +130,17 @@ void Init_MPU(void)
#ifdef XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR #ifdef XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR
/* If the DDR is present, configure region as per DDR size */ /* If the DDR is present, configure region as per DDR size */
size = (XPAR_PSU_R5_DDR_0_S_AXI_HIGHADDR - XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR) + 1; size = (XPAR_PSU_R5_DDR_0_S_AXI_HIGHADDR - XPAR_PSU_R5_DDR_0_S_AXI_BASEADDR) + 1;
/* Lookup the size. */ if (size < 0x80000000) {
for (i = 0; i < sizeof region_size / sizeof region_size[0]; i++) { /* Lookup the size. */
if (size <= region_size[i].size) { for (i = 0; i < sizeof region_size / sizeof region_size[0]; i++) {
RegSize = region_size[i].encoding; if (size <= region_size[i].size) {
break; RegSize = region_size[i].encoding;
break;
}
} }
} else {
/* if the DDR size is > 2GB, truncate it to 2GB */
RegSize = REGION_2G;
} }
#else #else
/* For DDRless system, configure region for TCM */ /* For DDRless system, configure region for TCM */