[PATCH v2 2/2] xilinx: board: Add support to pick bootscr flash offset/size from DT

[Michal Simek]

Location of bootscript in flash can be specified via /options/u-boot DT
node by using bootscr-flash-offset and bootscr-flash-size properties.
Values should be saved to script_offset_f and script_size_f variables.
Variables are described in doc/develop/bootstd.rst as:
script_offset_f
    SPI flash offset from which to load the U-Boot script, e.g. 0xffe000

script_size_f
    Size of the script to load, e.g. 0x2000

Both of them are used by sf_get_bootflow() in drivers/mtd/spi/sf_bootdev.c
to identify bootscript location inside flash.

Signed-off-by: Michal Simek <michal.simek at amd.com>
---

Changes in v2:
- Change message from printf to debug not to disturb current users

 board/xilinx/common/board.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index b3fb6acc25a3..126f0d81a9ed 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -411,6 +411,7 @@ int board_late_init_xilinx(void)
 	int i, id, macid = 0;
 	struct xilinx_board_description *desc;
 	phys_size_t bootm_size = gd->ram_top - gd->ram_base;
+	u64 bootscr_flash_offset, bootscr_flash_size;
 
 	if (!IS_ENABLED(CONFIG_MICROBLAZE)) {
 		ulong scriptaddr;
@@ -435,11 +436,19 @@ int board_late_init_xilinx(void)
 		}
 	}
 
+	if (!ofnode_read_bootscript_flash(&bootscr_flash_offset,
+					  &bootscr_flash_size)) {
+		ret |= env_set_hex("script_offset_f", bootscr_flash_offset);
+		ret |= env_set_hex("script_size_f", bootscr_flash_size);
+	} else {
+		debug("!!! Please define bootscr-flash-offset via DT !!!\n");
+		ret |= env_set_hex("script_offset_f",
+				   CONFIG_BOOT_SCRIPT_OFFSET);
+	}
+
 	if (IS_ENABLED(CONFIG_ARCH_ZYNQ) || IS_ENABLED(CONFIG_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);
 
-- 
2.36.1