Hi,
I am starting the TDA2Px over Linux and using the OCMC RAM as shared RAM between IPU and DSP. This works fine but when I am trying to use OCMC RAM in the linker file as a storage for code or stack the subcores crashes. Here my files:
Linker file (shortened version):
MEMORY
{
OCMC_RAM1 : o = 0x40300000, l = 0x00080000 /* 512kB L3 OCMC RAM1 */
OCMC_RAM2 : o = 0x40400000, l = 0x00100000 /* 1MB L3 OCMC RAM2 */
OCMC_RAM3 : o = 0x40500000, l = 0x00100000 /* 1MB L3 OCMC RAM3 */
IRAM : o = 0x00000000 , l = 0x2000 /* 8 kB */
SDRAM (AWX) : o = 0x9E000000 , l = 0x100000 /* 1 MB */
}
.data -> SDRAM
.bss > SDRAM
.stack > OCMC_RAM2
resource table (shortened version):
#define L3_OCMC_RAM2 0x40400000
#define IPU1_OCMC_RAM2 0x40400000
#define IPU1_OCMC_RAM2_SIZE 0x100000
{
TYPE_DEVMEM,
IPU_OCMC_RAM2, L3_OCMC_RAM2,
IPU_OCMC_RAM2_SIZE, 0, 0, "TEST_SHARED_MEMORY",
},
dts:
reserved_mem: reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
cmem_ocmc_test: cmem@40400000 {
compatible = "shared-dma-pool";
reg = <0x0 0x40400000 0x0 0x100000>;
sram = <&ocmcram2>;
no-map;
status = "okay";
};
};
Any ideas?
Thanks
