arm64: zynqmp: Set initrd_high to as high as possible

This patch is setting up the initrd_high to as high as possible by leaving
max stack size for u-boot so that bigger rootfs can also be loaded by
u-boot for booting kernel.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 33cb3e0..257a98d 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -464,7 +464,7 @@ config TPL_USE_ARCH_MEMSET
 
 config SET_STACK_SIZE
        bool "Enable an option to set max stack size that can be used"
-       default y if ARCH_VERSAL
+       default y if ARCH_VERSAL || ARCH_ZYNQMP
        help
          This will enable an option to set max stack size that can be
          used by u-boot.
@@ -472,7 +472,7 @@ config SET_STACK_SIZE
 config STACK_SIZE
        hex "Define max stack size that can be used by u-boot"
        depends on SET_STACK_SIZE
-       default 0x4000000 if ARCH_VERSAL
+       default 0x4000000 if ARCH_VERSAL || ARCH_ZYNQMP
        help
          Defines Max stack size that can be used by u-boot so that the
          initrd_high will be calculated as base stack pointer minus this

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index d649dab..0c331e3 100644 (file)
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -22,6 +22,7 @@
 #include <dwc3-uboot.h>
 #include <zynqmppl.h>
 #include <g_dnl.h>
+#include <linux/sizes.h>
 
 #include "pm_cfg_obj.h"
 
@@ -530,6 +531,7 @@ int board_late_init(void)
        char *new_targets;
        char *env_targets;
        int ret;
+       ulong initrd_hi;
 
 #if defined(CONFIG_USB_ETHER) && !defined(CONFIG_USB_GADGET_DOWNLOAD)
        usb_ether_init();
@@ -647,6 +649,10 @@ int board_late_init(void)
 
        env_set("boot_targets", new_targets);
 
+       initrd_hi = gd->start_addr_sp - CONFIG_STACK_SIZE;
+       initrd_hi = round_down(initrd_hi, SZ_16M);
+       env_set_addr("initrd_high", (void *)initrd_hi);
+
        reset_reason();
 
        return 0;

diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index a1c55a8..d42696b 100644 (file)
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -109,7 +109,6 @@
 
 #define ENV_MEM_LAYOUT_SETTINGS \
        "fdt_high=10000000\0" \
-       "initrd_high=10000000\0" \
        "fdt_addr_r=0x40000000\0" \
        "pxefile_addr_r=0x10000000\0" \
        "kernel_addr_r=0x18000000\0" \