1 files changed, 514 insertions, 0 deletions
diff --git a/roms/u-boot/board/raspberrypi/rpi/rpi.c b/roms/u-boot/board/raspberrypi/rpi/rpi.c
new file mode 100644
index 000000000..df52a4689
--- /dev/null
+++ b/roms/u-boot/board/raspberrypi/rpi/rpi.c
@@ -0,0 +1,514 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2012-2016 Stephen Warren
+ */
+
+#include <common.h>
+#include <config.h>
+#include <dm.h>
+#include <env.h>
+#include <efi_loader.h>
+#include <fdt_support.h>
+#include <fdt_simplefb.h>
+#include <init.h>
+#include <lcd.h>
+#include <memalign.h>
+#include <mmc.h>
+#include <asm/gpio.h>
+#include <asm/arch/mbox.h>
+#include <asm/arch/msg.h>
+#include <asm/arch/sdhci.h>
+#include <asm/global_data.h>
+#include <dm/platform_data/serial_bcm283x_mu.h>
+#ifdef CONFIG_ARM64
+#include <asm/armv8/mmu.h>
+#endif
+#include <watchdog.h>
+#include <dm/pinctrl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Assigned in lowlevel_init.S
+ * Push the variable into the .data section so that it
+ * does not get cleared later.
+ */
+unsigned long __section(".data") fw_dtb_pointer;
+
+/* TODO(sjg@chromium.org): Move these to the msg.c file */
+struct msg_get_arm_mem {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
+	u32 end_tag;
+};
+
+struct msg_get_board_rev {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_board_rev get_board_rev;
+	u32 end_tag;
+};
+
+struct msg_get_board_serial {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_board_serial get_board_serial;
+	u32 end_tag;
+};
+
+struct msg_get_mac_address {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_mac_address get_mac_address;
+	u32 end_tag;
+};
+
+struct msg_get_clock_rate {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
+	u32 end_tag;
+};
+
+#ifdef CONFIG_ARM64
+#define DTB_DIR "broadcom/"
+#else
+#define DTB_DIR ""
+#endif
+
+/*
+ * https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
+ */
+struct rpi_model {
+	const char *name;
+	const char *fdtfile;
+	bool has_onboard_eth;
+};
+
+static const struct rpi_model rpi_model_unknown = {
+	"Unknown model",
+	DTB_DIR "bcm283x-rpi-other.dtb",
+	false,
+};
+
+static const struct rpi_model rpi_models_new_scheme[] = {
+	[0x0] = {
+		"Model A",
+		DTB_DIR "bcm2835-rpi-a.dtb",
+		false,
+	},
+	[0x1] = {
+		"Model B",
+		DTB_DIR "bcm2835-rpi-b.dtb",
+		true,
+	},
+	[0x2] = {
+		"Model A+",
+		DTB_DIR "bcm2835-rpi-a-plus.dtb",
+		false,
+	},
+	[0x3] = {
+		"Model B+",
+		DTB_DIR "bcm2835-rpi-b-plus.dtb",
+		true,
+	},
+	[0x4] = {
+		"2 Model B",
+		DTB_DIR "bcm2836-rpi-2-b.dtb",
+		true,
+	},
+	[0x6] = {
+		"Compute Module",
+		DTB_DIR "bcm2835-rpi-cm.dtb",
+		false,
+	},
+	[0x8] = {
+		"3 Model B",
+		DTB_DIR "bcm2837-rpi-3-b.dtb",
+		true,
+	},
+	[0x9] = {
+		"Zero",
+		DTB_DIR "bcm2835-rpi-zero.dtb",
+		false,
+	},
+	[0xA] = {
+		"Compute Module 3",
+		DTB_DIR "bcm2837-rpi-cm3.dtb",
+		false,
+	},
+	[0xC] = {
+		"Zero W",
+		DTB_DIR "bcm2835-rpi-zero-w.dtb",
+		false,
+	},
+	[0xD] = {
+		"3 Model B+",
+		DTB_DIR "bcm2837-rpi-3-b-plus.dtb",
+		true,
+	},
+	[0xE] = {
+		"3 Model A+",
+		DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
+		false,
+	},
+	[0x10] = {
+		"Compute Module 3+",
+		DTB_DIR "bcm2837-rpi-cm3.dtb",
+		false,
+	},
+	[0x11] = {
+		"4 Model B",
+		DTB_DIR "bcm2711-rpi-4-b.dtb",
+		true,
+	},
+	[0x13] = {
+		"400",
+		DTB_DIR "bcm2711-rpi-400.dtb",
+		true,
+	},
+	[0x14] = {
+		"Compute Module 4",
+		DTB_DIR "bcm2711-rpi-cm4.dtb",
+		true,
+	},
+};
+
+static const struct rpi_model rpi_models_old_scheme[] = {
+	[0x2] = {
+		"Model B",
+		DTB_DIR "bcm2835-rpi-b.dtb",
+		true,
+	},
+	[0x3] = {
+		"Model B",
+		DTB_DIR "bcm2835-rpi-b.dtb",
+		true,
+	},
+	[0x4] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0x5] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0x6] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0x7] = {
+		"Model A",
+		DTB_DIR "bcm2835-rpi-a.dtb",
+		false,
+	},
+	[0x8] = {
+		"Model A",
+		DTB_DIR "bcm2835-rpi-a.dtb",
+		false,
+	},
+	[0x9] = {
+		"Model A",
+		DTB_DIR "bcm2835-rpi-a.dtb",
+		false,
+	},
+	[0xd] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0xe] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0xf] = {
+		"Model B rev2",
+		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
+		true,
+	},
+	[0x10] = {
+		"Model B+",
+		DTB_DIR "bcm2835-rpi-b-plus.dtb",
+		true,
+	},
+	[0x11] = {
+		"Compute Module",
+		DTB_DIR "bcm2835-rpi-cm.dtb",
+		false,
+	},
+	[0x12] = {
+		"Model A+",
+		DTB_DIR "bcm2835-rpi-a-plus.dtb",
+		false,
+	},
+	[0x13] = {
+		"Model B+",
+		DTB_DIR "bcm2835-rpi-b-plus.dtb",
+		true,
+	},
+	[0x14] = {
+		"Compute Module",
+		DTB_DIR "bcm2835-rpi-cm.dtb",
+		false,
+	},
+	[0x15] = {
+		"Model A+",
+		DTB_DIR "bcm2835-rpi-a-plus.dtb",
+		false,
+	},
+};
+
+static uint32_t revision;
+static uint32_t rev_scheme;
+static uint32_t rev_type;
+static const struct rpi_model *model;
+
+int dram_init(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
+	int ret;
+
+	BCM2835_MBOX_INIT_HDR(msg);
+	BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query ARM memory size\n");
+		return -1;
+	}
+
+	gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
+
+	/*
+	 * In some configurations the memory size returned by VideoCore
+	 * is not aligned to the section size, what is mandatory for
+	 * the u-boot's memory setup.
+	 */
+	gd->ram_size &= ~MMU_SECTION_SIZE;
+
+	return 0;
+}
+
+#ifdef CONFIG_OF_BOARD
+int dram_init_banksize(void)
+{
+	int ret;
+
+	ret = fdtdec_setup_memory_banksize();
+	if (ret)
+		return ret;
+
+	return fdtdec_setup_mem_size_base();
+}
+#endif
+
+static void set_fdtfile(void)
+{
+	const char *fdtfile;
+
+	if (env_get("fdtfile"))
+		return;
+
+	fdtfile = model->fdtfile;
+	env_set("fdtfile", fdtfile);
+}
+
+/*
+ * If the firmware provided a valid FDT at boot time, let's expose it in
+ * ${fdt_addr} so it may be passed unmodified to the kernel.
+ */
+static void set_fdt_addr(void)
+{
+	if (env_get("fdt_addr"))
+		return;
+
+	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
+		return;
+
+	env_set_hex("fdt_addr", fw_dtb_pointer);
+}
+
+/*
+ * Prevent relocation from stomping on a firmware provided FDT blob.
+ */
+unsigned long board_get_usable_ram_top(unsigned long total_size)
+{
+	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
+		return gd->ram_top;
+	return fw_dtb_pointer & ~0xffff;
+}
+
+static void set_usbethaddr(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
+	int ret;
+
+	if (!model->has_onboard_eth)
+		return;
+
+	if (env_get("usbethaddr"))
+		return;
+
+	BCM2835_MBOX_INIT_HDR(msg);
+	BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query MAC address\n");
+		/* Ignore error; not critical */
+		return;
+	}
+
+	eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
+
+	if (!env_get("ethaddr"))
+		env_set("ethaddr", env_get("usbethaddr"));
+
+	return;
+}
+
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+static void set_board_info(void)
+{
+	char s[11];
+
+	snprintf(s, sizeof(s), "0x%X", revision);
+	env_set("board_revision", s);
+	snprintf(s, sizeof(s), "%d", rev_scheme);
+	env_set("board_rev_scheme", s);
+	/* Can't rename this to board_rev_type since it's an ABI for scripts */
+	snprintf(s, sizeof(s), "0x%X", rev_type);
+	env_set("board_rev", s);
+	env_set("board_name", model->name);
+}
+#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
+
+static void set_serial_number(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
+	int ret;
+	char serial_string[17] = { 0 };
+
+	if (env_get("serial#"))
+		return;
+
+	BCM2835_MBOX_INIT_HDR(msg);
+	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query board serial\n");
+		/* Ignore error; not critical */
+		return;
+	}
+
+	snprintf(serial_string, sizeof(serial_string), "%016llx",
+		 msg->get_board_serial.body.resp.serial);
+	env_set("serial#", serial_string);
+}
+
+int misc_init_r(void)
+{
+	set_fdt_addr();
+	set_fdtfile();
+	set_usbethaddr();
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+	set_board_info();
+#endif
+	set_serial_number();
+
+	return 0;
+}
+
+static void get_board_rev(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
+	int ret;
+	const struct rpi_model *models;
+	uint32_t models_count;
+
+	BCM2835_MBOX_INIT_HDR(msg);
+	BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query board revision\n");
+		/* Ignore error; not critical */
+		return;
+	}
+
+	/*
+	 * For details of old-vs-new scheme, see:
+	 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
+	 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
+	 * (a few posts down)
+	 *
+	 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
+	 * lower byte to use as the board rev:
+	 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
+	 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
+	 */
+	revision = msg->get_board_rev.body.resp.rev;
+	if (revision & 0x800000) {
+		rev_scheme = 1;
+		rev_type = (revision >> 4) & 0xff;
+		models = rpi_models_new_scheme;
+		models_count = ARRAY_SIZE(rpi_models_new_scheme);
+	} else {
+		rev_scheme = 0;
+		rev_type = revision & 0xff;
+		models = rpi_models_old_scheme;
+		models_count = ARRAY_SIZE(rpi_models_old_scheme);
+	}
+	if (rev_type >= models_count) {
+		printf("RPI: Board rev 0x%x outside known range\n", rev_type);
+		model = &rpi_model_unknown;
+	} else if (!models[rev_type].name) {
+		printf("RPI: Board rev 0x%x unknown\n", rev_type);
+		model = &rpi_model_unknown;
+	} else {
+		model = &models[rev_type];
+	}
+
+	printf("RPI %s (0x%x)\n", model->name, revision);
+}
+
+int board_init(void)
+{
+#ifdef CONFIG_HW_WATCHDOG
+	hw_watchdog_init();
+#endif
+
+	get_board_rev();
+
+	gd->bd->bi_boot_params = 0x100;
+
+	return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
+}
+
+/*
+ * If the firmware passed a device tree use it for U-Boot.
+ */
+void *board_fdt_blob_setup(void)
+{
+	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
+		return NULL;
+	return (void *)fw_dtb_pointer;
+}
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	/*
+	 * For now, we simply always add the simplefb DT node. Later, we
+	 * should be more intelligent, and e.g. only do this if no enabled DT
+	 * node exists for the "real" graphics driver.
+	 */
+	lcd_dt_simplefb_add_node(blob);
+
+#ifdef CONFIG_EFI_LOADER
+	/* Reserve the spin table */
+	efi_add_memory_map(0, CONFIG_RPI_EFI_NR_SPIN_PAGES << EFI_PAGE_SHIFT,
+			   EFI_RESERVED_MEMORY_TYPE);
+#endif
+
+	return 0;
+}