1 files changed, 442 insertions, 0 deletions
diff --git a/roms/u-boot/board/xilinx/common/board.c b/roms/u-boot/board/xilinx/common/board.c
new file mode 100644
index 000000000..92b61d83c
--- /dev/null
+++ b/roms/u-boot/board/xilinx/common/board.c
@@ -0,0 +1,442 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2014 - 2020 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+#include <common.h>
+#include <env.h>
+#include <log.h>
+#include <asm/global_data.h>
+#include <asm/sections.h>
+#include <dm/uclass.h>
+#include <i2c.h>
+#include <linux/sizes.h>
+#include <malloc.h>
+#include "board.h"
+#include <dm.h>
+#include <i2c_eeprom.h>
+#include <net.h>
+#include <generated/dt.h>
+
+#include "fru.h"
+
+#if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
+int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
+{
+	int ret = -EINVAL;
+	struct udevice *dev;
+	ofnode eeprom;
+
+	eeprom = ofnode_get_chosen_node("xlnx,eeprom");
+	if (!ofnode_valid(eeprom))
+		return -ENODEV;
+
+	debug("%s: Path to EEPROM %s\n", __func__,
+	      ofnode_read_chosen_string("xlnx,eeprom"));
+
+	ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
+	if (ret)
+		return ret;
+
+	ret = dm_i2c_read(dev, CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET, ethaddr, 6);
+	if (ret)
+		debug("%s: I2C EEPROM MAC address read failed\n", __func__);
+	else
+		debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr);
+
+	return ret;
+}
+#endif
+
+#define EEPROM_HEADER_MAGIC		0xdaaddeed
+#define EEPROM_HDR_MANUFACTURER_LEN	16
+#define EEPROM_HDR_NAME_LEN		16
+#define EEPROM_HDR_REV_LEN		8
+#define EEPROM_HDR_SERIAL_LEN		20
+#define EEPROM_HDR_NO_OF_MAC_ADDR	4
+#define EEPROM_HDR_ETH_ALEN		ETH_ALEN
+
+struct xilinx_board_description {
+	u32 header;
+	char manufacturer[EEPROM_HDR_MANUFACTURER_LEN + 1];
+	char name[EEPROM_HDR_NAME_LEN + 1];
+	char revision[EEPROM_HDR_REV_LEN + 1];
+	char serial[EEPROM_HDR_SERIAL_LEN + 1];
+	u8 mac_addr[EEPROM_HDR_NO_OF_MAC_ADDR][EEPROM_HDR_ETH_ALEN + 1];
+};
+
+static int highest_id = -1;
+static struct xilinx_board_description **board_info;
+
+#define XILINX_I2C_DETECTION_BITS	sizeof(struct fru_common_hdr)
+
+/* Variable which stores pointer to array which stores eeprom content */
+struct xilinx_legacy_format {
+	char board_sn[18]; /* 0x0 */
+	char unused0[14]; /* 0x12 */
+	char eth_mac[6]; /* 0x20 */
+	char unused1[170]; /* 0x26 */
+	char board_name[11]; /* 0xd0 */
+	char unused2[5]; /* 0xdc */
+	char board_revision[3]; /* 0xe0 */
+	char unused3[29]; /* 0xe3 */
+};
+
+static void xilinx_eeprom_legacy_cleanup(char *eeprom, int size)
+{
+	int i;
+	char byte;
+
+	for (i = 0; i < size; i++) {
+		byte = eeprom[i];
+
+		/* Remove all ffs and spaces */
+		if (byte == 0xff || byte == ' ')
+			eeprom[i] = 0;
+
+		/* Convert strings to lower case */
+		if (byte >= 'A' && byte <= 'Z')
+			eeprom[i] = byte + 'a' - 'A';
+	}
+}
+
+static int xilinx_read_eeprom_legacy(struct udevice *dev, char *name,
+				     struct xilinx_board_description *desc)
+{
+	int ret, size;
+	struct xilinx_legacy_format *eeprom_content;
+	bool eth_valid = false;
+
+	size = sizeof(*eeprom_content);
+
+	eeprom_content = calloc(1, size);
+	if (!eeprom_content)
+		return -ENOMEM;
+
+	debug("%s: I2C EEPROM read pass data at %p\n", __func__,
+	      eeprom_content);
+
+	ret = dm_i2c_read(dev, 0, (uchar *)eeprom_content, size);
+	if (ret) {
+		debug("%s: I2C EEPROM read failed\n", __func__);
+		free(eeprom_content);
+		return ret;
+	}
+
+	xilinx_eeprom_legacy_cleanup((char *)eeprom_content, size);
+
+	printf("Xilinx I2C Legacy format at %s:\n", name);
+	printf(" Board name:\t%s\n", eeprom_content->board_name);
+	printf(" Board rev:\t%s\n", eeprom_content->board_revision);
+	printf(" Board SN:\t%s\n", eeprom_content->board_sn);
+
+	eth_valid = is_valid_ethaddr((const u8 *)eeprom_content->eth_mac);
+	if (eth_valid)
+		printf(" Ethernet mac:\t%pM\n", eeprom_content->eth_mac);
+
+	/* Terminating \0 chars ensure end of string */
+	strcpy(desc->name, eeprom_content->board_name);
+	strcpy(desc->revision, eeprom_content->board_revision);
+	strcpy(desc->serial, eeprom_content->board_sn);
+	if (eth_valid)
+		memcpy(desc->mac_addr[0], eeprom_content->eth_mac, ETH_ALEN);
+
+	desc->header = EEPROM_HEADER_MAGIC;
+
+	free(eeprom_content);
+
+	return ret;
+}
+
+static bool xilinx_detect_legacy(u8 *buffer)
+{
+	int i;
+	char c;
+
+	for (i = 0; i < XILINX_I2C_DETECTION_BITS; i++) {
+		c = buffer[i];
+
+		if (c < '0' || c > '9')
+			return false;
+	}
+
+	return true;
+}
+
+static int xilinx_read_eeprom_fru(struct udevice *dev, char *name,
+				  struct xilinx_board_description *desc)
+{
+	int ret, eeprom_size;
+	u8 *fru_content;
+
+	/* FIXME this is shortcut - if eeprom type is wrong it will fail */
+	eeprom_size = i2c_eeprom_size(dev);
+
+	fru_content = calloc(1, eeprom_size);
+	if (!fru_content)
+		return -ENOMEM;
+
+	debug("%s: I2C EEPROM read pass data at %p\n", __func__,
+	      fru_content);
+
+	ret = dm_i2c_read(dev, 0, (uchar *)fru_content,
+			  eeprom_size);
+	if (ret) {
+		debug("%s: I2C EEPROM read failed\n", __func__);
+		free(fru_content);
+		return ret;
+	}
+
+	printf("Xilinx I2C FRU format at %s:\n", name);
+	fru_capture((unsigned long)fru_content);
+	ret = fru_display(0);
+	if (ret) {
+		printf("FRU format decoding failed.\n");
+		return ret;
+	}
+
+	if (desc->header == EEPROM_HEADER_MAGIC) {
+		debug("Information already filled\n");
+		return -EINVAL;
+	}
+
+	/* It is clear that FRU was captured and structures were filled */
+	strncpy(desc->manufacturer, (char *)fru_data.brd.manufacturer_name,
+		sizeof(desc->manufacturer));
+	strncpy(desc->name, (char *)fru_data.brd.product_name,
+		sizeof(desc->name));
+	strncpy(desc->revision, (char *)fru_data.brd.rev,
+		sizeof(desc->revision));
+	strncpy(desc->serial, (char *)fru_data.brd.serial_number,
+		sizeof(desc->serial));
+	desc->header = EEPROM_HEADER_MAGIC;
+
+	return 0;
+}
+
+static bool xilinx_detect_fru(u8 *buffer)
+{
+	u8 checksum = 0;
+	int i;
+
+	checksum = fru_checksum((u8 *)buffer, sizeof(struct fru_common_hdr));
+	if (checksum) {
+		debug("%s Common header CRC FAIL\n", __func__);
+		return false;
+	}
+
+	bool all_zeros = true;
+	/* Checksum over all zeros is also zero that's why detect this case */
+	for (i = 0; i < sizeof(struct fru_common_hdr); i++) {
+		if (buffer[i] != 0)
+			all_zeros = false;
+	}
+
+	if (all_zeros)
+		return false;
+
+	debug("%s Common header CRC PASS\n", __func__);
+	return true;
+}
+
+static int xilinx_read_eeprom_single(char *name,
+				     struct xilinx_board_description *desc)
+{
+	int ret;
+	struct udevice *dev;
+	ofnode eeprom;
+	u8 buffer[XILINX_I2C_DETECTION_BITS];
+
+	eeprom = ofnode_get_aliases_node(name);
+	if (!ofnode_valid(eeprom))
+		return -ENODEV;
+
+	ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
+	if (ret)
+		return ret;
+
+	ret = dm_i2c_read(dev, 0, buffer, sizeof(buffer));
+	if (ret) {
+		debug("%s: I2C EEPROM read failed\n", __func__);
+		return ret;
+	}
+
+	debug("%s: i2c memory detected: %s\n", __func__, name);
+
+	if (CONFIG_IS_ENABLED(CMD_FRU) && xilinx_detect_fru(buffer))
+		return xilinx_read_eeprom_fru(dev, name, desc);
+
+	if (xilinx_detect_legacy(buffer))
+		return xilinx_read_eeprom_legacy(dev, name, desc);
+
+	return -ENODEV;
+}
+
+__maybe_unused int xilinx_read_eeprom(void)
+{
+	int id, ret;
+	char name_buf[8]; /* 8 bytes should be enough for nvmem+number */
+	struct xilinx_board_description *desc;
+
+	highest_id = dev_read_alias_highest_id("nvmem");
+	/* No nvmem aliases present */
+	if (highest_id < 0)
+		return -EINVAL;
+
+	board_info = calloc(1, sizeof(desc) * highest_id);
+	if (!board_info)
+		return -ENOMEM;
+
+	debug("%s: Highest ID %d, board_info %p\n", __func__,
+	      highest_id, board_info);
+
+	for (id = 0; id <= highest_id; id++) {
+		snprintf(name_buf, sizeof(name_buf), "nvmem%d", id);
+
+		/* Alloc structure */
+		desc = board_info[id];
+		if (!desc) {
+			desc = calloc(1, sizeof(*desc));
+			if (!desc)
+				return -ENOMEM;
+
+			board_info[id] = desc;
+		}
+
+		/* Ignoring return value for supporting multiple chips */
+		ret = xilinx_read_eeprom_single(name_buf, desc);
+		if (ret) {
+			free(desc);
+			board_info[id] = NULL;
+		}
+	}
+
+	/*
+	 * Consider to clean board_info structure when board/cards are not
+	 * detected.
+	 */
+
+	return 0;
+}
+
+#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
+void *board_fdt_blob_setup(void)
+{
+	void *fdt_blob;
+
+	if (!IS_ENABLED(CONFIG_SPL_BUILD) &&
+	    !IS_ENABLED(CONFIG_VERSAL_NO_DDR) &&
+	    !IS_ENABLED(CONFIG_ZYNQMP_NO_DDR)) {
+		fdt_blob = (void *)CONFIG_XILINX_OF_BOARD_DTB_ADDR;
+
+		if (fdt_magic(fdt_blob) == FDT_MAGIC)
+			return fdt_blob;
+
+		debug("DTB is not passed via %p\n", fdt_blob);
+	}
+
+	if (IS_ENABLED(CONFIG_SPL_BUILD)) {
+		/*
+		 * FDT is at end of BSS unless it is in a different memory
+		 * region
+		 */
+		if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
+			fdt_blob = (ulong *)&_image_binary_end;
+		else
+			fdt_blob = (ulong *)&__bss_end;
+	} else {
+		/* FDT is at end of image */
+		fdt_blob = (ulong *)&_end;
+	}
+
+	if (fdt_magic(fdt_blob) == FDT_MAGIC)
+		return fdt_blob;
+
+	debug("DTB is also not passed via %p\n", fdt_blob);
+
+	return NULL;
+}
+#endif
+
+#if defined(CONFIG_BOARD_LATE_INIT)
+static int env_set_by_index(const char *name, int index, char *data)
+{
+	char var[32];
+
+	if (!index)
+		sprintf(var, "board_%s", name);
+	else
+		sprintf(var, "card%d_%s", index, name);
+
+	return env_set(var, data);
+}
+
+int board_late_init_xilinx(void)
+{
+	u32 ret = 0;
+	int i, id, macid = 0;
+	struct xilinx_board_description *desc;
+	phys_size_t bootm_size = gd->ram_size;
+
+	if (!CONFIG_IS_ENABLED(MICROBLAZE)) {
+		ulong scriptaddr;
+
+		scriptaddr = env_get_hex("scriptaddr", 0);
+		ret |= env_set_hex("scriptaddr", gd->ram_base + scriptaddr);
+	}
+
+	if (CONFIG_IS_ENABLED(ARCH_ZYNQ) || CONFIG_IS_ENABLED(MICROBLAZE))
+		bootm_size = min(bootm_size, (phys_size_t)(SZ_512M + SZ_256M));
+
+	ret |= env_set_hex("script_offset_f", CONFIG_BOOT_SCRIPT_OFFSET);
+
+	ret |= env_set_addr("bootm_low", (void *)gd->ram_base);
+	ret |= env_set_addr("bootm_size", (void *)bootm_size);
+
+	for (id = 0; id <= highest_id; id++) {
+		desc = board_info[id];
+		if (desc && desc->header == EEPROM_HEADER_MAGIC) {
+			if (desc->manufacturer[0])
+				ret |= env_set_by_index("manufacturer", id,
+							desc->manufacturer);
+			if (desc->name[0])
+				ret |= env_set_by_index("name", id,
+							desc->name);
+			if (desc->revision[0])
+				ret |= env_set_by_index("rev", id,
+							desc->revision);
+			if (desc->serial[0])
+				ret |= env_set_by_index("serial", id,
+							desc->serial);
+
+			if (!CONFIG_IS_ENABLED(NET))
+				continue;
+
+			for (i = 0; i < EEPROM_HDR_NO_OF_MAC_ADDR; i++) {
+				if (!desc->mac_addr[i])
+					continue;
+
+				if (is_valid_ethaddr((const u8 *)desc->mac_addr[i]))
+					ret |= eth_env_set_enetaddr_by_index("eth",
+							macid++, desc->mac_addr[i]);
+			}
+		}
+	}
+
+	if (ret)
+		printf("%s: Saving run time variables FAILED\n", __func__);
+
+	return 0;
+}
+#endif
+
+int __maybe_unused board_fit_config_name_match(const char *name)
+{
+	debug("%s: Check %s, default %s\n", __func__, name, DEVICE_TREE);
+
+	if (!strcmp(name, DEVICE_TREE))
+		return 0;
+
+	return -1;
+}