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imx8mp_evk: enable booting Image.gz and avoid extra memcpy

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Add support for booting compressed kernel Image.gz by defining
kernel_comp_addr_r and kernel_comp_size in the default environment.

Set kernel_comp_addr_r to a high memory region (0x80000000) to provide
a dedicated decompression buffer, avoiding overlap between compressed
input and decompressed output.

Also adjust CONFIG_SYS_LOAD_ADDR from 0x40480000 to 0x40600000.

With TEXT_OFFSET=0, the kernel is relocated directly to loadaddr, so
separating decompression and execution regions is required to guarantee
safe decompression without additional copying.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan
2026-06-26 23:02:46 -03:00
committed by Fabio Estevam
parent b61c4f2a32
commit c295bc7c15
2 changed files with 3 additions and 1 deletions
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board/nxp/imx8mp_evk/imx8mp_evk.env
+2
View File
@@ -10,6 +10,8 @@ fdt_addr=0x43000000
fdtfile=DEFAULT_FDT_FILE
image=Image
ip_dyn=yes
kernel_comp_addr_r=0x80000000
kernel_comp_size=0x2000000
mmcdev=CONFIG_ENV_MMC_DEVICE_INDEX
mmcpart=1
mmcroot=/dev/mmcblk1p2 rootwait rw
configs/imx8mp_evk_defconfig
+1 -1
View File
@@ -19,7 +19,7 @@ CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
CONFIG_SPL_BSS_START_ADDR=0x98fc00
CONFIG_SPL_BSS_MAX_SIZE=0x400
CONFIG_SYS_BOOTM_LEN=0x2000000
CONFIG_SYS_LOAD_ADDR=0x40480000
CONFIG_SYS_LOAD_ADDR=0x40600000
CONFIG_SPL=y
CONFIG_ENV_OFFSET_REDUND=0x20400
CONFIG_SPL_IMX_ROMAPI_LOADADDR=0x48000000