diff options
Diffstat (limited to 'plat/rockchip/common/params_setup.c')
| -rw-r--r-- | plat/rockchip/common/params_setup.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/plat/rockchip/common/params_setup.c b/plat/rockchip/common/params_setup.c index 3943c1f0..ad5588af 100644 --- a/plat/rockchip/common/params_setup.c +++ b/plat/rockchip/common/params_setup.c @@ -117,6 +117,56 @@ void dt_relocate_pmu_firmware(void) INFO("%s: relocated PMU firmware\n", __func__); } +static void plat_rockchip_dt_process_fdt_uart(void *fdt) +{ + const char *path_name = "/chosen"; + const char *prop_name = "stdout-path"; + int node_offset; + int stdout_path_len; + const char *stdout_path; + char serial_char; + int serial_no; + uint32_t uart_base; + + node_offset = fdt_path_offset(fdt, path_name); + if (node_offset < 0) + return; + + stdout_path = fdt_getprop(fdt, node_offset, prop_name, + &stdout_path_len); + if (stdout_path == NULL) + return; + + /* + * We expect something like: + * "serial0:..."" + */ + if (strncmp("serial", stdout_path, 6) != 0) + return; + + serial_char = stdout_path[6]; + serial_no = serial_char - '0'; + + switch (serial_no) { + case 0: + uart_base = UART0_BASE; + break; + case 1: + uart_base = UART1_BASE; + break; + case 2: + uart_base = UART2_BASE; + break; + case 3: + uart_base = UART3_BASE; + break; + default: + return; + } + + rockchip_set_uart_base(uart_base); +} + bool dt_board_is_compatible(const char *board) { void *fdt = plat_get_fdt(); @@ -135,6 +185,7 @@ static int dt_process_fdt(void* blob) } INFO("%s: opened FDT at %p\n", __func__, blob); + plat_rockchip_dt_process_fdt_uart(fdt); dt_relocate_pmu_firmware(); dt_get_reset_gpio(); |