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arm64: zynqmp: Set initrd_high to as high as possible

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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>
This commit is contained in:
T Karthik Reddy 2019-08-20 09:30:57 +05:30 committed by Michal Simek
parent 085201c246
commit a69814c815
3 changed files with 8 additions and 3 deletions
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4
arch/arm/Kconfig
View file

@ -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

6
board/xilinx/zynqmp/zynqmp.c
View file

@ -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;

1
include/configs/xilinx_zynqmp.h
View file

@ -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" \