diff options
Diffstat (limited to 'src/soc/amd')
-rw-r--r-- | src/soc/amd/sabrina/psp_verstage/uart.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/soc/amd/sabrina/psp_verstage/uart.c b/src/soc/amd/sabrina/psp_verstage/uart.c index 1c89f10c99..2767b2eb27 100644 --- a/src/soc/amd/sabrina/psp_verstage/uart.c +++ b/src/soc/amd/sabrina/psp_verstage/uart.c @@ -4,8 +4,23 @@ #include <amdblocks/uart.h> #include <types.h> +static void *uart_bars[FCH_UART_ID_MAX]; + uintptr_t get_uart_base(unsigned int idx) { - /* Mapping the UART is not supported. */ - return 0; + uint32_t err; + + if (idx >= ARRAY_SIZE(uart_bars)) + return 0; + + if (uart_bars[idx]) + return (uintptr_t)uart_bars[idx]; + + err = svc_map_fch_dev(FCH_IO_DEVICE_UART, idx, 0, &uart_bars[idx]); + if (err) { + svc_debug_print("Failed to map UART\n"); + return 0; + } + + return (uintptr_t)uart_bars[idx]; } |