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arm64: zynqmp: Define a way to intialize TCM

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TCM on ZynqMP needs to be intialized in a sequence
and this patch provides a global routine to perform
this as per requirement.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2017-07-13 19:01:09 +05:30 committed by Michal Simek
parent 189bec47ab
commit a076789efe
2 changed files with 22 additions and 0 deletions
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15
arch/arm/cpu/armv8/zynqmp/mp.c
View File

@ -206,6 +206,21 @@ static void write_tcm_boot_trampoline(u32 boot_addr)
}
}
void initialize_tcm(bool mode)
{
if (!mode) {
set_r5_tcm_mode(LOCK);
set_r5_halt_mode(HALT, LOCK);
enable_clock_r5();
release_r5_reset(LOCK);
} else {
set_r5_tcm_mode(SPLIT);
set_r5_halt_mode(HALT, SPLIT);
enable_clock_r5();
release_r5_reset(SPLIT);
}
}
int cpu_release(int nr, int argc, char * const argv[])
{
if (nr >= ZYNQMP_CORE_APU0 && nr <= ZYNQMP_CORE_APU3) {

7
arch/arm/include/asm/arch-zynqmp/sys_proto.h
View File

@ -10,6 +10,11 @@
#define PAYLOAD_ARG_CNT 5
enum {
TCM_LOCK,
TCM_SPLIT,
};
int zynq_slcr_get_mio_pin_status(const char *periph);
unsigned int zynqmp_get_silicon_version(void);
@ -24,4 +29,6 @@ int zynqmp_mmio_read(const u32 address, u32 *value);
int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3,
u32 *ret_payload);
void initialize_tcm(bool mode);
#endif /* _ASM_ARCH_SYS_PROTO_H */