GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/board/mscc/ocelot/Kconfig

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+config SYS_VENDOR
+	default "mscc"
+
+if SOC_OCELOT
+
+config SYS_BOARD
+	default "ocelot"
+
+config SYS_CONFIG_NAME
+	default "ocelot"
+
+endif

source/bootloader/u-boot-2020.01/board/mscc/ocelot/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+obj-$(CONFIG_SOC_OCELOT)	:= ocelot.o
+

source/bootloader/u-boot-2020.01/board/mscc/ocelot/ocelot.c

@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/io.h>
+#include <asm/addrspace.h>
+#include <asm/types.h>
+#include <spi.h>
+#include <led.h>
+#include <wait_bit.h>
+#include <miiphy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+enum {
+	BOARD_TYPE_PCB120 = 0xAABBCC00,
+	BOARD_TYPE_PCB123,
+};
+
+void mscc_switch_reset(bool enter)
+{
+	/* Nasty workaround to avoid GPIO19 (DDR!) being reset */
+	mscc_gpio_set_alternate(19, 2);
+
+	debug("applying SwC reset\n");
+
+	writel(ICPU_RESET_CORE_RST_PROTECT, BASE_CFG + ICPU_RESET);
+	writel(PERF_SOFT_RST_SOFT_CHIP_RST, BASE_DEVCPU_GCB + PERF_SOFT_RST);
+
+	if (wait_for_bit_le32(BASE_DEVCPU_GCB + PERF_SOFT_RST,
+			      PERF_SOFT_RST_SOFT_CHIP_RST, false, 5000, false))
+		pr_err("Tiemout while waiting for switch reset\n");
+
+	/*
+	 * Reset GPIO19 mode back as regular GPIO, output, high (DDR
+	 * not reset) (Order is important)
+	 */
+	setbits_le32(BASE_DEVCPU_GCB + PERF_GPIO_OE, BIT(19));
+	writel(BIT(19), BASE_DEVCPU_GCB + PERF_GPIO_OUT_SET);
+	mscc_gpio_set_alternate(19, 0);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	if (gd->board_type == BOARD_TYPE_PCB123)
+		return 0;
+
+	phy_write(phydev, 0, 31, 0x10);
+	phy_write(phydev, 0, 18, 0x80F0);
+	while (phy_read(phydev, 0, 18) & 0x8000)
+		;
+	phy_write(phydev, 0, 31, 0);
+
+	return 0;
+}
+
+void board_debug_uart_init(void)
+{
+	/* too early for the pinctrl driver, so configure the UART pins here */
+	mscc_gpio_set_alternate(6, 1);
+	mscc_gpio_set_alternate(7, 1);
+}
+
+int board_early_init_r(void)
+{
+	/* Prepare SPI controller to be used in master mode */
+	writel(0, BASE_CFG + ICPU_SW_MODE);
+	clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
+			ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
+			ICPU_GENERAL_CTRL_IF_SI_OWNER(2));
+
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE;
+
+	/* LED setup */
+	if (IS_ENABLED(CONFIG_LED))
+		led_default_state();
+
+	return 0;
+}
+
+static void do_board_detect(void)
+{
+	u16 dummy = 0;
+
+	/* Enable MIIM */
+	mscc_gpio_set_alternate(14, 1);
+	mscc_gpio_set_alternate(15, 1);
+	if (mscc_phy_rd(1, 0, 0, &dummy) == 0)
+		gd->board_type = BOARD_TYPE_PCB120;
+	else
+		gd->board_type = BOARD_TYPE_PCB123;
+}
+
+#if defined(CONFIG_MULTI_DTB_FIT)
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == BOARD_TYPE_PCB120 &&
+	    strcmp(name, "ocelot_pcb120") == 0)
+		return 0;
+
+	if (gd->board_type == BOARD_TYPE_PCB123 &&
+	    strcmp(name, "ocelot_pcb123") == 0)
+		return 0;
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_DTB_RESELECT)
+int embedded_dtb_select(void)
+{
+	do_board_detect();
+	fdtdec_setup();
+
+	return 0;
+}
+#endif