diff options
| author | Yu-Chien Peter Lin <[email protected]> | 2025-08-14 19:10:12 +0800 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2025-10-06 11:13:20 +0530 |
| commit | 5de8c1d49983ada5daa68fc01979526f510d8063 (patch) | |
| tree | ee839b513c9466bf902e5f83af78ea11783992e8 | |
| parent | 040f3100a952891f2ff71344b11fca2f70912c4f (diff) | |
lib: serial: sifive-uart: add shared memory region for SiFive UART
Add shared memory region so the driver has permission
to access it in OpenSBI.
Signed-off-by: Yu-Chien Peter Lin <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
| -rw-r--r-- | lib/utils/serial/sifive-uart.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/utils/serial/sifive-uart.c b/lib/utils/serial/sifive-uart.c index 3581d47a..55637137 100644 --- a/lib/utils/serial/sifive-uart.c +++ b/lib/utils/serial/sifive-uart.c @@ -9,6 +9,7 @@ #include <sbi/riscv_io.h> #include <sbi/sbi_console.h> +#include <sbi/sbi_domain.h> #include <sbi_utils/serial/sifive-uart.h> /* clang-format off */ @@ -111,5 +112,7 @@ int sifive_uart_init(unsigned long base, u32 in_freq, u32 baudrate) sbi_console_set_device(&sifive_console); - return 0; + return sbi_domain_root_add_memrange(base, PAGE_SIZE, PAGE_SIZE, + (SBI_DOMAIN_MEMREGION_MMIO | + SBI_DOMAIN_MEMREGION_SHARED_SURW_MRW)); } |