[U-Boot] [PATCH] rockchip: arm: halt when enable bucks of PMIC rk808
From: "Eric Gao" eric.gao@rock-chips.com
when enable PMIC rk808,the system will halt at very early stage,log is shown as bellow.
INFO: plat_rockchip_pmu_init(1211): pd status 3e INFO: BL31: Initializing runtime services INFO: BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x200000 INFO: SPSR = 0x3c9 time 44561b, 0 (<<----Just stop here)
It's caused by the absence of "{ }" in syscon_rk3399.c ,which will lead to memory overflow like below.According to Sysmap file ,we can find the function buck_get_value of rk808 is just follow the compatible struct,the pointer "of_match" point to "buck_get_value",but it is not a struct and don't have member of compatible, In this case, system crash. So,on the face, it looks like that rk808 is guilty.but he is really innocent.
while (of_match->compatible) { <<---------- if (!strcmp(of_match->compatible, compat)) { *of_idp = of_match; return 0; } of_match++; }
Signed-off-by: eric.gao eric.gao@rock-chips.com Signed-off-by: Eric Gao eric.gao@rock-chips.com ---
arch/arm/mach-rockchip/rk3399/syscon_rk3399.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c index d32985b..74d4552 100644 --- a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c +++ b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c @@ -14,6 +14,7 @@ static const struct udevice_id rk3399_syscon_ids[] = { { .compatible = "rockchip,rk3399-pmugrf", .data = ROCKCHIP_SYSCON_PMUGRF }, { .compatible = "rockchip,rk3399-pmusgrf", .data = ROCKCHIP_SYSCON_PMUSGRF }, { .compatible = "rockchip,rk3399-cic", .data = ROCKCHIP_SYSCON_CIC }, + { } };
U_BOOT_DRIVER(syscon_rk3399) = {
Hi Eric,
On 6 April 2017 at 00:58, Eric Gao eric.gao@rock-chips.com wrote:
From: "Eric Gao" eric.gao@rock-chips.com
when enable PMIC rk808,the system will halt at very early stage,log is shown as bellow.
INFO: plat_rockchip_pmu_init(1211): pd status 3e INFO: BL31: Initializing runtime services INFO: BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x200000 INFO: SPSR = 0x3c9 time 44561b, 0 (<<----Just stop here)
It's caused by the absence of "{ }" in syscon_rk3399.c ,which will lead to memory overflow like below.According to Sysmap file ,we can find the function buck_get_value of rk808 is just follow the compatible struct,the pointer "of_match" point to "buck_get_value",but it is not a struct and don't have member of compatible, In this case, system crash. So,on the face, it looks like that rk808 is guilty.but he is really innocent.
while (of_match->compatible) { <<---------- if (!strcmp(of_match->compatible, compat)) { *of_idp = of_match; return 0; } of_match++; }
Great description, but for your commit title, could you say something like 'rockchip: rk3399: Add missing sentinel in syscon'?
Your current message suggests that you are trying to halt the board.
Signed-off-by: eric.gao eric.gao@rock-chips.com Signed-off-by: Eric Gao eric.gao@rock-chips.com
Some inconsistency here. Can you use the same capital letters?
arch/arm/mach-rockchip/rk3399/syscon_rk3399.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c index d32985b..74d4552 100644 --- a/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c +++ b/arch/arm/mach-rockchip/rk3399/syscon_rk3399.c @@ -14,6 +14,7 @@ static const struct udevice_id rk3399_syscon_ids[] = { { .compatible = "rockchip,rk3399-pmugrf", .data = ROCKCHIP_SYSCON_PMUGRF }, { .compatible = "rockchip,rk3399-pmusgrf", .data = ROCKCHIP_SYSCON_PMUSGRF }, { .compatible = "rockchip,rk3399-cic", .data = ROCKCHIP_SYSCON_CIC },
{ }};
U_BOOT_DRIVER(syscon_rk3399) = {
1.9.1
Regards, Simon
participants (2)
-
Eric Gao -
Simon Glass