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armV7R: K3: am654: Load SYSFW binary and config from boot media

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Use the System Firmware (SYSFW) loader framework to load and start
the SYSFW as part of the AM654 early initialization sequence. While
at it also initialize the WKUP_UART0 pinmux as it is used by SYSFW
to print diagnostic messages.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
This commit is contained in:
Andreas Dannenberg 2019-06-04 17:55:50 -05:00 committed by Tom Rini
parent b3b1ed4bca
commit c222e3d927
2 changed files with 27 additions and 1 deletions
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27
arch/arm/mach-k3/am6_init.c
View File

@ -10,8 +10,11 @@
#include <asm/io.h>
#include <spl.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sysfw-loader.h>
#include "common.h"
#include <dm.h>
#include <dm/uclass-internal.h>
#include <dm/pinctrl.h>
#ifdef CONFIG_SPL_BUILD
static void mmr_unlock(u32 base, u32 partition)
@ -63,7 +66,7 @@ static void store_boot_index_from_rom(void)
void board_init_f(ulong dummy)
{
#if defined(CONFIG_K3_AM654_DDRSS)
#if defined(CONFIG_K3_LOAD_SYSFW) || defined(CONFIG_K3_AM654_DDRSS)
struct udevice *dev;
int ret;
#endif
@ -83,8 +86,30 @@ void board_init_f(ulong dummy)
/* Init DM early in-order to invoke system controller */
spl_early_init();
#ifdef CONFIG_K3_LOAD_SYSFW
/*
* Process pinctrl for the serial0 a.k.a. WKUP_UART0 module and continue
* regardless of the result of pinctrl. Do this without probing the
* device, but instead by searching the device that would request the
* given sequence number if probed. The UART will be used by the system
* firmware (SYSFW) image for various purposes and SYSFW depends on us
* to initialize its pin settings.
*/
ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, true, &dev);
if (!ret)
pinctrl_select_state(dev, "default");
/*
* Load, start up, and configure system controller firmware. Provide
* the U-Boot console init function to the SYSFW post-PM configuration
* callback hook, effectively switching on (or over) the console
* output.
*/
k3_sysfw_loader(preloader_console_init);
#else
/* Prepare console output */
preloader_console_init();
#endif
#ifdef CONFIG_K3_AM654_DDRSS
ret = uclass_get_device(UCLASS_RAM, 0, &dev);

1
board/ti/am65x/Kconfig
View File

@ -18,6 +18,7 @@ config TARGET_AM654_R5_EVM
select CPU_V7R
select SYS_THUMB_BUILD
select SOC_K3_AM6
select K3_LOAD_SYSFW
select K3_AM654_DDRSS
imply SYS_K3_SPL_ATF