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ipq807x: Reset operation through PSCI

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Change-Id: Ib1f2e8f7990101aaa48c3bc259ec293008efca02
Signed-off-by: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
This commit is contained in:
Gokul Sriram Palanisamy 2017-08-16 15:49:38 +05:30 • committed by Gerrit - the friendly Code Review server
parent 71c93c6ee1
commit 9dc890a648
4 changed files with 20 additions and 2 deletions
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5
arch/arm/cpu/armv7/psci.S
View file

@ -221,3 +221,8 @@ ENTRY(psci_cpu_entry)
ENDPROC(psci_cpu_entry)
.popsection
ENTRY(__invoke_psci_fn_smc)
__SMC(0)
bx lr
ENDPROC(__invoke_psci_fn_smc)

5
arch/arm/include/asm/psci.h
View file

@ -37,4 +37,9 @@ int psci_update_dt(void *fdt);
void psci_board_init(void);
#endif /* ! __ASSEMBLY__ */
#define ___inst_arm(x) .long x
#define __inst_arm(x) ___inst_arm((x) & 0xFFFFFFFF)
#define __SMC(imm4) __inst_arm(0xE1600070 | (((imm4) & 0xF) << 0))
#endif /* __ARM_PSCI_H__ */

10
board/qca/arm/ipq807x/ipq807x.c
View file

@ -25,12 +25,15 @@
#include <fdtdec.h>
#include <mmc.h>
#include <usb.h>
#include <linux/linkage.h>
DECLARE_GLOBAL_DATA_PTR;
#define GCNT_PSHOLD 0x004AB000
qca_mmc mmc_host;
extern asmlinkage void __invoke_psci_fn_smc(unsigned long, unsigned long, unsigned long, unsigned long);
extern loff_t board_env_offset;
extern loff_t board_env_range;
extern loff_t board_env_size;
@ -164,10 +167,15 @@ void reset_crashdump(void)
return;
}
void psci_sys_reset(void)
{
__invoke_psci_fn_smc(0x84000009, 0, 0, 0);
}
void reset_cpu(unsigned long a)
{
reset_crashdump();
writel(0, GCNT_PSHOLD);
psci_sys_reset();
while(1);
}

2
include/configs/ipq807x.h
View file

@ -316,6 +316,6 @@ extern loff_t board_env_size;
*/
#define CONFIG_CMD_RUN
#define CONFIG_ARMV7_PSCI
#endif /* _IPQCDP_H */