diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-stm32mp/stm32mp2/cpu.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/arm/mach-stm32mp/stm32mp2/cpu.c b/arch/arm/mach-stm32mp/stm32mp2/cpu.c index c3b87d7f981..e081dc605b8 100644 --- a/arch/arm/mach-stm32mp/stm32mp2/cpu.c +++ b/arch/arm/mach-stm32mp/stm32mp2/cpu.c @@ -92,13 +92,21 @@ uintptr_t get_stm32mp_bl2_dtb(void) } /* - * Save the FDT address provided by TF-A in r2 at boot time + * Save the FDT address provided by TF-A at boot time * This function is called from start.S */ -void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2, - unsigned long r3) +void save_boot_params(unsigned long x0, unsigned long x1, unsigned long x2, + unsigned long x3) { - nt_fw_dtb = r2; + /* use the ARM64 kernel booting register settings: + * x0 = physical address of device tree blob (dtb) in system RAM. + * so kernel can replace U-Boot in FIP wihtout BL31 modification + * else falback to x2 used in previous TF-A version + */ + if (x0) + nt_fw_dtb = x0; + else + nt_fw_dtb = x2; save_boot_params_ret(); } |