u-boot/board/xilinx/common/board.c
Michal Simek fc274a5932 arm64: zynqmp: Add support for OF_SEPARATE with board DTB
OF_BOARD and OF_SEPARATE can use board specific board_fdt_blob_setup().

OF_BOARD option is mostly used for picking up DTB from certain location.

OF_SEPARATE option is used when DTB is appended after u-boot binary.

This board specific function is aligned with current version in
lib/fdtdec.c with checking CONFIG_XILINX_OF_BOARD_DTB_ADDR address first.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-01-14 09:05:53 +01:00

69 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2014 - 2019 Xilinx, Inc.
* Michal Simek <michal.simek@xilinx.com>
*/
#include <common.h>
#include <asm/sections.h>
#include <dm/uclass.h>
#include <i2c.h>
int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
{
int ret = -EINVAL;
#if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
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_get_chosen_prop("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);
#endif
return ret;
}
#if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
void *board_fdt_blob_setup(void)
{
static void *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);
#ifdef 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;
#endif
if (fdt_magic(fdt_blob) == FDT_MAGIC)
return fdt_blob;
debug("DTB is also not passed via %p\n", fdt_blob);
return NULL;
}
#endif