| Message ID | 20220818145246.201205-23-jagan@edgeble.ai |
|---|---|
| State | Changes Requested |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
| Series | ARM: Add Rockchip RV1126 support | expand |
On 2022/8/18 22:52, Jagan Teki wrote: > Unsecure the dram area so that MMC, USB, and SFC controllers > can able to read data from dram. > > Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com> > Signed-off-by: Jagan Teki <jagan@edgeble.ai> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Thanks, - Kever > --- > Changes for v2: > - use IS_ENABLED > > arch/arm/mach-rockchip/rv1126/rv1126.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/arm/mach-rockchip/rv1126/rv1126.c b/arch/arm/mach-rockchip/rv1126/rv1126.c > index 91554c98b6..b9b898756f 100644 > --- a/arch/arm/mach-rockchip/rv1126/rv1126.c > +++ b/arch/arm/mach-rockchip/rv1126/rv1126.c > @@ -10,6 +10,8 @@ > #include <asm/arch-rockchip/hardware.h> > #include <asm/arch-rockchip/grf_rv1126.h> > > +#define FIREWALL_APB_BASE 0xffa60000 > +#define FW_DDR_CON_REG 0x80 > #define GRF_BASE 0xFE000000 > > const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { > @@ -58,6 +60,16 @@ void board_debug_uart_init(void) > #ifndef CONFIG_TPL_BUILD > int arch_cpu_init(void) > { > + /** > + * Set dram area unsecure in spl > + * > + * usb & mmc & sfc controllers can read data to dram > + * since they are unsecure. > + * (Note: only secure-world can access this register) > + */ > + if (IS_ENABLED(CONFIG_SPL_BUILD)) > + writel(0, FIREWALL_APB_BASE + FW_DDR_CON_REG); > + > return 0; > } > #endif
diff --git a/arch/arm/mach-rockchip/rv1126/rv1126.c b/arch/arm/mach-rockchip/rv1126/rv1126.c index 91554c98b6..b9b898756f 100644 --- a/arch/arm/mach-rockchip/rv1126/rv1126.c +++ b/arch/arm/mach-rockchip/rv1126/rv1126.c @@ -10,6 +10,8 @@ #include <asm/arch-rockchip/hardware.h> #include <asm/arch-rockchip/grf_rv1126.h> +#define FIREWALL_APB_BASE 0xffa60000 +#define FW_DDR_CON_REG 0x80 #define GRF_BASE 0xFE000000 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { @@ -58,6 +60,16 @@ void board_debug_uart_init(void) #ifndef CONFIG_TPL_BUILD int arch_cpu_init(void) { + /** + * Set dram area unsecure in spl + * + * usb & mmc & sfc controllers can read data to dram + * since they are unsecure. + * (Note: only secure-world can access this register) + */ + if (IS_ENABLED(CONFIG_SPL_BUILD)) + writel(0, FIREWALL_APB_BASE + FW_DDR_CON_REG); + return 0; } #endif