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-rw-r--r--board/xilinx/common/board.c205
-rw-r--r--board/xilinx/common/board.h2
-rw-r--r--board/xilinx/versal/board.c3
-rw-r--r--board/xilinx/zynqmp/zynqmp.c3
4 files changed, 212 insertions, 1 deletions
diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index b0f60c40a5..0aed84546d 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * (C) Copyright 2014 - 2019 Xilinx, Inc.
+ * (C) Copyright 2014 - 2020 Xilinx, Inc.
* Michal Simek <michal.simek@xilinx.com>
*/
@@ -11,7 +11,11 @@
#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>
#if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
@@ -41,6 +45,180 @@ int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
}
#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 struct xilinx_board_description *board_info;
+
+#define XILINX_I2C_DETECTION_BITS 8
+
+/* 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_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 (xilinx_detect_legacy(buffer))
+ return xilinx_read_eeprom_legacy(dev, name, desc);
+
+ return -ENODEV;
+}
+
+__maybe_unused int xilinx_read_eeprom(void)
+{
+ int id, highest_id;
+ char name_buf[8]; /* 8 bytes should be enough for nvmem+number */
+
+ highest_id = dev_read_alias_highest_id("nvmem");
+ /* No nvmem aliases present */
+ if (highest_id < 0)
+ return -EINVAL;
+
+ board_info = calloc(1, sizeof(*board_info));
+ 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);
+
+ /* Ignoring return value for supporting multiple chips */
+ xilinx_read_eeprom_single(name_buf, board_info);
+ }
+
+ if (board_info->header != EEPROM_HEADER_MAGIC)
+ free(board_info);
+
+ return 0;
+}
+
#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
void *board_fdt_blob_setup(void)
{
@@ -78,6 +256,7 @@ void *board_fdt_blob_setup(void)
int board_late_init_xilinx(void)
{
u32 ret = 0;
+ int i;
phys_size_t bootm_size = gd->ram_size;
if (CONFIG_IS_ENABLED(ARCH_ZYNQ))
@@ -88,6 +267,30 @@ int board_late_init_xilinx(void)
ret |= env_set_addr("bootm_low", (void *)gd->ram_base);
ret |= env_set_addr("bootm_size", (void *)bootm_size);
+ if (board_info) {
+ if (board_info->manufacturer)
+ ret |= env_set("manufacturer",
+ board_info->manufacturer);
+ if (board_info->name)
+ ret |= env_set("board_name", board_info->name);
+ if (board_info->revision)
+ ret |= env_set("board_rev", board_info->revision);
+ if (board_info->serial)
+ ret |= env_set("board_serial", board_info->serial);
+
+ for (i = 0; i < EEPROM_HDR_NO_OF_MAC_ADDR; i++) {
+ if (!board_info->mac_addr[i])
+ continue;
+
+ if (!CONFIG_IS_ENABLED(NET))
+ continue;
+
+ if (is_valid_ethaddr((const u8 *)board_info->mac_addr[i]))
+ ret |= eth_env_set_enetaddr_by_index("eth", i,
+ board_info->mac_addr[i]);
+ }
+ }
+
if (ret)
printf("%s: Saving run time variables FAILED\n", __func__);
diff --git a/board/xilinx/common/board.h b/board/xilinx/common/board.h
index 180dfbca10..69e642429b 100644
--- a/board/xilinx/common/board.h
+++ b/board/xilinx/common/board.h
@@ -9,4 +9,6 @@
int board_late_init_xilinx(void);
+int xilinx_read_eeprom(void);
+
#endif /* BOARD_XILINX_COMMON_BOARD_H */
diff --git a/board/xilinx/versal/board.c b/board/xilinx/versal/board.c
index a5ca4ca874..912c1143a8 100644
--- a/board/xilinx/versal/board.c
+++ b/board/xilinx/versal/board.c
@@ -36,6 +36,9 @@ int board_init(void)
fpga_add(fpga_xilinx, &versalpl);
#endif
+ if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
+ xilinx_read_eeprom();
+
return 0;
}
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 362c6e3dd6..db3f5978a9 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -324,6 +324,9 @@ int board_init(void)
if (sizeof(CONFIG_ZYNQMP_SPL_PM_CFG_OBJ_FILE) > 1)
zynqmp_pmufw_load_config_object(zynqmp_pm_cfg_obj,
zynqmp_pm_cfg_obj_size);
+#else
+ if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
+ xilinx_read_eeprom();
#endif
printf("EL Level:\tEL%d\n", current_el());
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-13 17:20:55 +0300