event: Convert arch_cpu_init_dm() to use events

Instead of a special function, send an event after driver model is inited
and adjust the boards which use this function.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/Kconfig

@@ -94,6 +94,7 @@ config NIOS2
 	bool "Nios II architecture"
 	select CPU
 	select DM
+	imply DM_EVENT
 	select OF_CONTROL
 	select SUPPORT_OF_CONTROL
 	imply CMD_DM
@@ -113,6 +114,7 @@ config RISCV
 	select DM
 	imply DM_SERIAL
 	imply DM_ETH
+	imply DM_EVENT
 	imply DM_MMC
 	imply DM_SPI
 	imply DM_SPI_FLASH
@@ -238,6 +240,7 @@ config X86
 	imply CMD_SF_TEST
 	imply CMD_ZBOOT
 	imply DM_ETH
+	imply DM_EVENT
 	imply DM_GPIO
 	imply DM_KEYBOARD
 	imply DM_MMC

arch/arm/Kconfig

@@ -774,6 +774,7 @@ config ARCH_OMAP2PLUS
 	select SUPPORT_SPL
 	imply TI_SYSC if DM && OF_CONTROL
 	imply FIT
+	imply DM_EVENT
 
 config ARCH_MESON
 	bool "Amlogic Meson"
@@ -818,6 +819,7 @@ config ARCH_IMX8
 	select MACH_IMX
 	select OF_CONTROL
 	select ENABLE_ARM_SOC_BOOT0_HOOK
+	imply DM_EVENT
 
 config ARCH_IMX8M
 	bool "NXP i.MX8M platform"
@@ -831,6 +833,7 @@ config ARCH_IMX8M
 	select DM
 	select SUPPORT_SPL
 	imply CMD_DM
+	imply DM_EVENT
 
 config ARCH_IMX8ULP
 	bool "NXP i.MX8ULP platform"
@@ -841,6 +844,7 @@ config ARCH_IMX8ULP
 	select SUPPORT_SPL
 	select GPIO_EXTRA_HEADER
 	imply CMD_DM
+	imply DM_EVENT
 
 config ARCH_IMXRT
 	bool "NXP i.MXRT platform"

arch/arm/mach-imx/imx8/cpu.c

@@ -8,6 +8,7 @@
 #include <cpu.h>
 #include <cpu_func.h>
 #include <dm.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <asm/cache.h>
@@ -66,7 +67,7 @@ int arch_cpu_init(void)
 	return 0;
 }
 
-int arch_cpu_init_dm(void)
+static int imx8_init_mu(void *ctx, struct event *event)
 {
 	struct udevice *devp;
 	int node, ret;
@@ -88,6 +89,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, imx8_init_mu);
 
 int print_bootinfo(void)
 {

arch/arm/mach-imx/imx8m/soc.c

@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <cpu_func.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <asm/arch/imx-regs.h>
@@ -494,7 +495,7 @@ static void imx_set_wdog_powerdown(bool enable)
 	writew(enable, &wdog3->wmcr);
 }
 
-int arch_cpu_init_dm(void)
+static int imx8m_check_clock(void *ctx, struct event *event)
 {
 	struct udevice *dev;
 	int ret;
@@ -511,6 +512,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, imx8m_check_clock);
 
 int arch_cpu_init(void)
 {

arch/arm/mach-imx/imx8ulp/soc.c

@@ -11,6 +11,7 @@
 #include <asm/mach-imx/boot_mode.h>
 #include <asm/global_data.h>
 #include <efi_loader.h>
+#include <event.h>
 #include <spl.h>
 #include <asm/arch/rdc.h>
 #include <asm/arch/s400_api.h>
@@ -569,7 +570,7 @@ int arch_cpu_init(void)
 	return 0;
 }
 
-int arch_cpu_init_dm(void)
+static int imx8ulp_check_mu(void *ctx, struct event *event)
 {
 	struct udevice *devp;
 	int node, ret;
@@ -584,6 +585,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, imx8ulp_check_mu);
 
 #if defined(CONFIG_SPL_BUILD)
 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)

arch/arm/mach-omap2/am33xx/board.c

@@ -11,6 +11,7 @@
 #include <dm.h>
 #include <debug_uart.h>
 #include <errno.h>
+#include <event.h>
 #include <init.h>
 #include <net.h>
 #include <ns16550.h>
@@ -596,7 +597,7 @@ void board_init_f(ulong dummy)
 
 #endif
 
-int arch_cpu_init_dm(void)
+static int am33xx_dm_post_init(void *ctx, struct event *event)
 {
 	hw_data_init();
 #if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)
@@ -604,3 +605,4 @@ int arch_cpu_init_dm(void)
 #endif
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, am33xx_dm_post_init);

arch/arm/mach-omap2/hwinit-common.c

@@ -12,6 +12,7 @@
  */
 #include <common.h>
 #include <debug_uart.h>
+#include <event.h>
 #include <fdtdec.h>
 #include <init.h>
 #include <spl.h>
@@ -239,11 +240,13 @@ void board_init_f(ulong dummy)
 }
 #endif
 
-int arch_cpu_init_dm(void)
+static int omap2_system_init(void *ctx, struct event *event)
 {
 	early_system_init();
+
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, omap2_system_init);
 
 /*
  * Routine: wait_for_command_complete

arch/mips/Kconfig

@@ -130,6 +130,7 @@ config MACH_PIC32
 config TARGET_BOSTON
 	bool "Support Boston"
 	select DM
+	imply DM_EVENT
 	select DM_SERIAL
 	select MIPS_CM
 	select SYS_CACHE_SHIFT_6

arch/mips/mach-pic32/cpu.c

@@ -7,6 +7,7 @@
 #include <common.h>
 #include <clk.h>
 #include <dm.h>
+#include <event.h>
 #include <init.h>
 #include <malloc.h>
 #include <asm/global_data.h>
@@ -95,12 +96,13 @@ static void prefetch_init(void)
 }
 
 /* arch specific CPU init after DM */
-int arch_cpu_init_dm(void)
+static int pic32_flash_prefetch(void *ctx, struct event *event)
 {
 	/* flash prefetch */
 	prefetch_init();
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, pic32_flash_prefetch);
 
 /* Un-gate DDR2 modules (gated by default) */
 static void ddr2_pmd_ungate(void)

arch/nios2/cpu/cpu.c

@@ -10,6 +10,7 @@
 #include <cpu_func.h>
 #include <dm.h>
 #include <errno.h>
+#include <event.h>
 #include <init.h>
 #include <irq_func.h>
 #include <asm/cache.h>
@@ -63,7 +64,7 @@ static void copy_exception_trampoline(void)
 }
 #endif
 
-int arch_cpu_init_dm(void)
+static int nios_cpu_setup(void *ctx, struct event *event)
 {
 	struct udevice *dev;
 	int ret;
@@ -79,6 +80,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, nios_cpu_setup);
 
 static int altera_nios2_get_desc(const struct udevice *dev, char *buf,
 				 int size)

arch/riscv/cpu/cpu.c

@@ -7,9 +7,11 @@
 #include <cpu.h>
 #include <dm.h>
 #include <dm/lists.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <asm/encoding.h>
+#include <asm/system.h>
 #include <dm/uclass-internal.h>
 #include <linux/bitops.h>
 
@@ -81,7 +83,7 @@ static void dummy_pending_ipi_clear(ulong hart, ulong arg0, ulong arg1)
 }
 #endif
 
-int arch_cpu_init_dm(void)
+int riscv_cpu_setup(void *ctx, struct event *event)
 {
 	int ret;
 
@@ -133,6 +135,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, riscv_cpu_setup);
 
 int arch_early_init_r(void)
 {

arch/riscv/include/asm/system.h

@@ -7,6 +7,8 @@
 #ifndef __ASM_RISCV_SYSTEM_H
 #define __ASM_RISCV_SYSTEM_H
 
+struct event;
+
 /*
  * Interrupt configuring macros.
  *
@@ -14,4 +16,7 @@
  *
  */
 
+/* Hook to set up the CPU (called from SPL too) */
+int riscv_cpu_setup(void *ctx, struct event *event);
+
 #endif	/* __ASM_RISCV_SYSTEM_H */

arch/riscv/lib/spl.c

@@ -11,6 +11,7 @@
 #include <spl.h>
 #include <asm/global_data.h>
 #include <asm/smp.h>
+#include <asm/system.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -27,7 +28,7 @@ __weak void board_init_f(ulong dummy)
 	if (ret)
 		panic("spl_early_init() failed: %d\n", ret);
 
-	arch_cpu_init_dm();
+	riscv_cpu_setup(NULL, NULL);
 
 	preloader_console_init();
 

arch/x86/cpu/baytrail/cpu.c

@@ -8,6 +8,7 @@
 #include <common.h>
 #include <cpu.h>
 #include <dm.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <pci.h>
@@ -44,7 +45,7 @@ static void hsuart_clock_set(void *base)
  * Configure the internal clock of both SIO HS-UARTs, if they are enabled
  * via FSP
  */
-int arch_cpu_init_dm(void)
+static int baytrail_uart_init(void *ctx, struct event *event)
 {
 	struct udevice *dev;
 	void *base;
@@ -63,6 +64,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, baytrail_uart_init);
 
 static void set_max_freq(void)
 {

arch/x86/cpu/broadwell/cpu.c

@@ -8,6 +8,7 @@
 #include <common.h>
 #include <dm.h>
 #include <cpu.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <asm/cpu.h>
@@ -24,7 +25,7 @@
 #include <asm/arch/pch.h>
 #include <asm/arch/rcb.h>
 
-int arch_cpu_init_dm(void)
+static int broadwell_init_cpu(void *ctx, struct event *event)
 {
 	struct udevice *dev;
 	int ret;
@@ -41,6 +42,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, broadwell_init_cpu);
 
 void set_max_freq(void)
 {

arch/x86/cpu/ivybridge/cpu.c

@@ -14,6 +14,7 @@
 #include <cpu_func.h>
 #include <dm.h>
 #include <errno.h>
+#include <event.h>
 #include <fdtdec.h>
 #include <init.h>
 #include <log.h>
@@ -53,7 +54,7 @@ int arch_cpu_init(void)
 	return x86_cpu_init_f();
 }
 
-int arch_cpu_init_dm(void)
+static int ivybridge_cpu_init(void *ctx, struct event *ev)
 {
 	struct pci_controller *hose;
 	struct udevice *bus, *dev;
@@ -85,6 +86,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, ivybridge_cpu_init);
 
 #define PCH_EHCI0_TEMP_BAR0 0xe8000000
 #define PCH_EHCI1_TEMP_BAR0 0xe8000400

arch/x86/cpu/quark/quark.c

@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <cpu_func.h>
+#include <event.h>
 #include <init.h>
 #include <mmc.h>
 #include <asm/cache.h>
@@ -247,7 +248,7 @@ int arch_cpu_init(void)
 	return 0;
 }
 
-int arch_cpu_init_dm(void)
+static int quark_init_pcie(void *ctx, struct event *event)
 {
 	/*
 	 * Initialize PCIe controller
@@ -262,6 +263,7 @@ int arch_cpu_init_dm(void)
 
 	return 0;
 }
+EVENT_SPY(EVT_DM_POST_INIT, quark_init_pcie);
 
 int checkcpu(void)
 {

arch/x86/include/asm/fsp2/fsp_api.h

@@ -60,4 +60,12 @@ int fsp_silicon_init(bool s3wake, bool use_spi_flash);
 
 typedef asmlinkage int (*fsp_silicon_init_func)(struct fsps_upd *params);
 
+/**
+ *  fsp_setup_pinctrl() - Set up the pinctrl for FSP
+ *
+ * @ctx: Event context (not used)
+ * @event: Event information (not used)
+ */
+int fsp_setup_pinctrl(void *ctx, struct event *event);
+
 #endif

arch/x86/lib/fsp2/fsp_init.c

@@ -9,6 +9,7 @@
 #include <bootstage.h>
 #include <cbfs.h>
 #include <dm.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <spi.h>
@@ -18,7 +19,7 @@
 #include <dm/uclass-internal.h>
 #include <asm/fsp2/fsp_internal.h>
 
-int arch_cpu_init_dm(void)
+int fsp_setup_pinctrl(void *ctx, struct event *event)
 {
 	struct udevice *dev;
 	ofnode node;
@@ -41,6 +42,7 @@ int arch_cpu_init_dm(void)
 
 	return ret;
 }
+EVENT_SPY(EVT_DM_POST_INIT, fsp_setup_pinctrl);
 
 #if !defined(CONFIG_TPL_BUILD)
 binman_sym_declare(ulong, intel_fsp_m, image_pos);

arch/x86/lib/spl.c

@@ -17,6 +17,7 @@
 #include <syscon.h>
 #include <asm/cpu.h>
 #include <asm/cpu_common.h>
+#include <asm/fsp2/fsp_api.h>
 #include <asm/global_data.h>
 #include <asm/mrccache.h>
 #include <asm/mtrr.h>
@@ -27,7 +28,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-__weak int arch_cpu_init_dm(void)
+__weak int fsp_setup_pinctrl(void *ctx, struct event *event)
 {
 	return 0;
 }
@@ -89,7 +90,7 @@ static int x86_spl_init(void)
 		return ret;
 	}
 #ifndef CONFIG_TPL
-	ret = arch_cpu_init_dm();
+	ret = fsp_setup_pinctrl(NULL, NULL);
 	if (ret) {
 		debug("%s: arch_cpu_init_dm() failed\n", __func__);
 		return ret;

arch/x86/lib/tpl.c

@@ -19,11 +19,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-__weak int arch_cpu_init_dm(void)
-{
-	return 0;
-}
-
 static int x86_tpl_init(void)
 {
 	int ret;
@@ -44,11 +39,6 @@ static int x86_tpl_init(void)
 		debug("%s: arch_cpu_init() failed\n", __func__);
 		return ret;
 	}
-	ret = arch_cpu_init_dm();
-	if (ret) {
-		debug("%s: arch_cpu_init_dm() failed\n", __func__);
-		return ret;
-	}
 	preloader_console_init();
 
 	return 0;

common/board_f.c

@@ -803,11 +803,6 @@ __weak int reserve_arch(void)
 	return 0;
 }
 
-__weak int arch_cpu_init_dm(void)
-{
-	return 0;
-}
-
 __weak int checkcpu(void)
 {
 	return 0;
@@ -848,7 +843,6 @@ static const init_fnc_t init_sequence_f[] = {
 	arch_cpu_init,		/* basic arch cpu dependent setup */
 	mach_cpu_init,		/* SoC/machine dependent CPU setup */
 	initf_dm,
-	arch_cpu_init_dm,
 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 	board_early_init_f,
 #endif

common/event.c

@@ -26,6 +26,7 @@ const char *const type_name[] = {
 	"test",
 
 	/* Events related to driver model */
+	"dm_post_init",
 	"dm_pre_probe",
 	"dm_post_probe",
 	"dm_pre_remove",

drivers/core/root.c

@@ -404,6 +404,11 @@ int dm_init_and_scan(bool pre_reloc_only)
 			return ret;
 		}
 	}
+	if (CONFIG_IS_ENABLED(DM_EVENT)) {
+		ret = event_notify_null(EVT_DM_POST_INIT);
+		if (ret)
+			return log_msg_ret("ev", ret);
+	}
 
 	return 0;
 }

include/event.h

@@ -20,6 +20,7 @@ enum event_t {
 	EVT_TEST,
 
 	/* Events related to driver model */
+	EVT_DM_POST_INIT,
 	EVT_DM_PRE_PROBE,
 	EVT_DM_POST_PROBE,
 	EVT_DM_PRE_REMOVE,

include/init.h

@@ -45,17 +45,6 @@ void board_init_f(ulong dummy);
  */
 int arch_cpu_init(void);
 
-/**
- * arch_cpu_init_dm() - init CPU after driver model is available
- *
- * This is called immediately after driver model is available before
- * relocation. This is similar to arch_cpu_init() but is able to reference
- * devices
- *
- * Return: 0 if OK, -ve on error
- */
-int arch_cpu_init_dm(void);
-
 /**
  * mach_cpu_init() - SoC/machine dependent CPU setup
  *