[U-Boot] [PATCH v2 06/16] armv7R: K3: j721e: Load SYSFW binary and config from boot media
Lokesh Vutla
lokeshvutla at ti.com
Fri Jun 7 14:01:45 UTC 2019
From: Andreas Dannenberg <dannenberg at ti.com>
Use the System Firmware (SYSFW) loader framework to load and start
the SYSFW as part of the J721E early initialization sequence. While
at it also initialize the MCU_UART0 pinmux as it is used by SYSFW
to print diagnostic messages.
Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
arch/arm/mach-k3/j721e_init.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 5514dc963e..733e414654 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -11,9 +11,13 @@
#include <asm/io.h>
#include <asm/armv7_mpu.h>
#include <asm/arch/hardware.h>
+#include <asm/arch/sysfw-loader.h>
#include "common.h"
#include <asm/arch/sys_proto.h>
#include <linux/soc/ti/ti_sci_protocol.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)
@@ -69,6 +73,10 @@ static void store_boot_index_from_rom(void)
void board_init_f(ulong dummy)
{
+#if defined(CONFIG_K3_LOAD_SYSFW)
+ struct udevice *dev;
+ int ret;
+#endif
/*
* Cannot delay this further as there is a chance that
* K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
@@ -85,8 +93,30 @@ void board_init_f(ulong dummy)
/* Init DM early */
spl_early_init();
+#ifdef CONFIG_K3_LOAD_SYSFW
+ /*
+ * Process pinctrl for the serial0 a.k.a. MCU_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
}
u32 spl_boot_mode(const u32 boot_device)
--
2.21.0
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