diff options
Diffstat (limited to 'arch/arm/mach-k3')
| -rw-r--r-- | arch/arm/mach-k3/Kconfig | 21 | ||||
| -rw-r--r-- | arch/arm/mach-k3/common.c | 26 | ||||
| -rw-r--r-- | arch/arm/mach-k3/common.h | 1 |
3 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig index de1c1cc73f..5583241943 100644 --- a/arch/arm/mach-k3/Kconfig +++ b/arch/arm/mach-k3/Kconfig @@ -66,6 +66,27 @@ config SYS_K3_BOOT_CORE_ID int default 16 +config K3_EARLY_CONS + bool "Activate to allow for an early console during SPL" + depends on SPL + help + Turn this option on to enable an early console functionality in SPL + before the main console is being brought up. This can be useful in + situations where the main console is dependent on System Firmware + (SYSFW) being up and running, which is usually not the case during + the very early stages of boot. Using this early console functionality + will allow for an alternate serial port to be used to support things + like UART-based boot and early diagnostic messages until the main + console is ready to get activated. + +config K3_EARLY_CONS_IDX + depends on K3_EARLY_CONS + int "Index of serial device to use for SPL early console" + default 1 + help + Use this option to set the index of the serial device to be used + for the early console during SPL execution. + config K3_LOAD_SYSFW bool depends on SPL diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c index c16afc654f..6c453b9af4 100644 --- a/arch/arm/mach-k3/common.c +++ b/arch/arm/mach-k3/common.c @@ -27,6 +27,32 @@ struct ti_sci_handle *get_ti_sci_handle(void) return (struct ti_sci_handle *)ti_sci_get_handle_from_sysfw(dev); } +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_K3_EARLY_CONS +int early_console_init(void) +{ + struct udevice *dev; + int ret; + + gd->baudrate = CONFIG_BAUDRATE; + + ret = uclass_get_device_by_seq(UCLASS_SERIAL, CONFIG_K3_EARLY_CONS_IDX, + &dev); + if (ret) { + printf("Error getting serial dev for early console! (%d)\n", + ret); + return ret; + } + + gd->cur_serial_dev = dev; + gd->flags |= GD_FLG_SERIAL_READY; + gd->have_console = 1; + + return 0; +} +#endif + #ifdef CONFIG_SYS_K3_SPL_ATF void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) { diff --git a/arch/arm/mach-k3/common.h b/arch/arm/mach-k3/common.h index ac7e80d9af..ab68e14de8 100644 --- a/arch/arm/mach-k3/common.h +++ b/arch/arm/mach-k3/common.h @@ -9,3 +9,4 @@ #include <asm/armv7_mpu.h> void setup_k3_mpu_regions(void); +int early_console_init(void); |