[PATCH v3] xilinx: zynqmp: Do not use 0 as spl bss start address

[Stefan Herbrechtsmeier]

From: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>

Do not use 0 as address for memory because of the special meaning for
pointers (null pointer). Change the spl bss start address to the second
page.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>

---

Changes in v3:
- Switch to Kconfig

Changes in v2:
- Rework commit message and replace address null by 0

 common/spl/Kconfig                                             | 3 ++-
 configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig | 2 --
 configs/xilinx_zynqmp_mini_emmc0_defconfig                     | 2 --
 configs/xilinx_zynqmp_mini_emmc1_defconfig                     | 2 --
 configs/xilinx_zynqmp_mini_qspi_defconfig                      | 2 --
 configs/xilinx_zynqmp_virt_defconfig                           | 2 --
 6 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 931619c366..6ecf517333 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -107,7 +107,7 @@ config SPL_PAD_TO
 config SPL_HAS_BSS_LINKER_SECTION
 	depends on SPL_FRAMEWORK
 	bool "Use a specific address for the BSS via the linker script"
-	default y if ARCH_SUNXI || ARCH_MX6 || ARCH_OMAP2PLUS || MIPS || RISCV
+	default y if ARCH_SUNXI || ARCH_MX6 || ARCH_OMAP2PLUS || MIPS || RISCV || ARCH_ZYNQMP
 
 config SPL_BSS_START_ADDR
 	hex "Link address for the BSS within the SPL binary"
@@ -118,6 +118,7 @@ config SPL_BSS_START_ADDR
 	default 0x81f80000 if ARCH_SUNXI && MACH_SUNIV
 	default 0x4ff80000 if ARCH_SUNXI && !(MACH_SUN9I || MACH_SUNIV)
 	default 0x2ff80000 if ARCH_SUNXI && MACH_SUN9I
+	default 0x1000 if ARCH_ZYNQMP
 
 choice
 	prompt "Enforce SPL BSS limit"
diff --git a/configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig b/configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig
index 0574ee95e4..f04fa64450 100644
--- a/configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig
+++ b/configs/avnet_ultrazedev_cc_v1_0_ultrazedev_som_v1_0_defconfig
@@ -27,8 +27,6 @@ CONFIG_BOOTDELAY=0
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_CLOCKS=y
 CONFIG_SPL_MAX_SIZE=0x40000
-CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
-CONFIG_SPL_BSS_START_ADDR=0x0
 CONFIG_SPL_BSS_MAX_SIZE=0x80000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0xfffffffc
diff --git a/configs/xilinx_zynqmp_mini_emmc0_defconfig b/configs/xilinx_zynqmp_mini_emmc0_defconfig
index a248cbf3a3..c481a6917f 100644
--- a/configs/xilinx_zynqmp_mini_emmc0_defconfig
+++ b/configs/xilinx_zynqmp_mini_emmc0_defconfig
@@ -25,8 +25,6 @@ CONFIG_BOARD_EARLY_INIT_R=y
 # CONFIG_BOARD_LATE_INIT is not set
 CONFIG_CLOCKS=y
 CONFIG_SPL_MAX_SIZE=0x40000
-CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
-CONFIG_SPL_BSS_START_ADDR=0x0
 CONFIG_SPL_BSS_MAX_SIZE=0x80000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0xfffffffc
diff --git a/configs/xilinx_zynqmp_mini_emmc1_defconfig b/configs/xilinx_zynqmp_mini_emmc1_defconfig
index df0365ba77..b02fec64d1 100644
--- a/configs/xilinx_zynqmp_mini_emmc1_defconfig
+++ b/configs/xilinx_zynqmp_mini_emmc1_defconfig
@@ -25,8 +25,6 @@ CONFIG_BOARD_EARLY_INIT_R=y
 # CONFIG_BOARD_LATE_INIT is not set
 CONFIG_CLOCKS=y
 CONFIG_SPL_MAX_SIZE=0x40000
-CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
-CONFIG_SPL_BSS_START_ADDR=0x0
 CONFIG_SPL_BSS_MAX_SIZE=0x80000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0xfffffffc
diff --git a/configs/xilinx_zynqmp_mini_qspi_defconfig b/configs/xilinx_zynqmp_mini_qspi_defconfig
index 82510f1904..49e2758d64 100644
--- a/configs/xilinx_zynqmp_mini_qspi_defconfig
+++ b/configs/xilinx_zynqmp_mini_qspi_defconfig
@@ -24,8 +24,6 @@ CONFIG_REMAKE_ELF=y
 # CONFIG_BOARD_LATE_INIT is not set
 CONFIG_CLOCKS=y
 CONFIG_SPL_MAX_SIZE=0x40000
-CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
-CONFIG_SPL_BSS_START_ADDR=0x0
 CONFIG_SPL_BSS_MAX_SIZE=0x80000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0xfffffffc
diff --git a/configs/xilinx_zynqmp_virt_defconfig b/configs/xilinx_zynqmp_virt_defconfig
index 89622d18f8..6776bd9d5d 100644
--- a/configs/xilinx_zynqmp_virt_defconfig
+++ b/configs/xilinx_zynqmp_virt_defconfig
@@ -32,8 +32,6 @@ CONFIG_PREBOOT="run scsi_init;usb start"
 CONFIG_BOARD_EARLY_INIT_R=y
 CONFIG_CLOCKS=y
 CONFIG_SPL_MAX_SIZE=0x40000
-CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
-CONFIG_SPL_BSS_START_ADDR=0x0
 CONFIG_SPL_BSS_MAX_SIZE=0x80000
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0xfffffffc
-- 
2.30.2