| Message ID | 20230702091654.3515778-1-vigneshr@ti.com |
|---|---|
| State | Accepted |
| Commit | 11626a33fadc32f1315a7b1c278a5d96257537b5 |
| Delegated to: | Tom Rini |
| Headers | show |
| Series | arm: mach-k3: am62a7_init: Open up FSS_DAT_REG3 firewall | expand |
On Sun, Jul 02, 2023 at 02:46:54PM +0530, Vignesh Raghavendra wrote: > On security enforced (HS-SE) devices ROM firewalls OSPI data region3 that > is present in above 64bit region. Open this up in bootloader to allow > Linux to access OSPI flashes in mmap mode. > > Without this kernel will crash when accessing this region due to > firewall violations on HS-SE devices. > > Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Applied to u-boot/master, thanks!
diff --git a/arch/arm/mach-k3/am62a7_init.c b/arch/arm/mach-k3/am62a7_init.c index 1f51b0408969..8ac834cffdf9 100644 --- a/arch/arm/mach-k3/am62a7_init.c +++ b/arch/arm/mach-k3/am62a7_init.c @@ -14,6 +14,10 @@ #include <dm/uclass-internal.h> #include <dm/pinctrl.h> +struct fwl_data cbass_main_fwls[] = { + { "FSS_DAT_REG3", 7, 8 }, +}; + /* * This uninitialized global variable would normal end up in the .bss section, * but the .bss is cleared between writing and reading this variable, so move @@ -166,6 +170,9 @@ void board_init_f(ulong dummy) /* Output System Firmware version info */ k3_sysfw_print_ver(); + /* Disable ROM configured firewalls right after loading sysfw */ + remove_fwl_configs(cbass_main_fwls, ARRAY_SIZE(cbass_main_fwls)); + #if defined(CONFIG_K3_AM62A_DDRSS) ret = uclass_get_device(UCLASS_RAM, 0, &dev); if (ret)
On security enforced (HS-SE) devices ROM firewalls OSPI data region3 that is present in above 64bit region. Open this up in bootloader to allow Linux to access OSPI flashes in mmap mode. Without this kernel will crash when accessing this region due to firewall violations on HS-SE devices. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> --- arch/arm/mach-k3/am62a7_init.c | 7 +++++++ 1 file changed, 7 insertions(+)