#include <commonlib/bsd/compression.h>
#include <console/console.h>
#include <bootmem.h>
#include <program_loading.h>
#include <fit.h>
#include <endian.h>

Include dependency graph for fit_payload.c:

Macros
#define	MAX_KERNEL_SIZE (64*MiB)

Functions
static size_t	get_kernel_size (const struct fit_image_node *node)

static bool	fit_place_mem (const struct range_entry r, void arg)
	Place the region in free memory range. More...

bool	fit_payload_arch (struct prog payload, struct fit_config_node config, struct region kernel, struct region fdt, struct region *initrd)

Macro Definition Documentation

◆ MAX_KERNEL_SIZE

#define MAX_KERNEL_SIZE (64*MiB)

Definition at line 12 of file fit_payload.c.

Function Documentation

◆ fit_payload_arch()

bool fit_payload_arch	(	struct prog *	payload,
		struct fit_config_node *	config,
		struct region *	kernel,
		struct region *	fdt,
		struct region *	initrd
	)

The kernel ARM documentation recommends loading the kernel above 32MiB in order to avoid the need to need to relocate prior to decompression.

The code assumes that bootmem_walk provides a sorted list of memory regions, starting from the lowest address. The order of the calls here doesn't matter, as the placement is enforced in the called functions. For details check code on top.

To ensure the fdt is not overwritten by the kernel decompressor, place the fdt above the 128 MB from the start of RAM, as recommended by the kernel documentation.

The code assumes that bootmem_walk provides a sorted list of memory regions, starting from the lowest address. The order of the calls here doesn't matter, as the placement is enforced in the called functions. For details check code on top.

NOTE: versions prior to v4.6 cannot make use of memory below the physical offset of the Image so it is recommended that the Image be placed as close as possible to the start of system RAM.

For kernel <v4.6 the INITRD and FDT can't be placed below the kernel. In that case set region offset to an address on top of kernel.

Definition at line 62 of file fit_payload.c.

References arg, BIOS_CRIT, BIOS_DEBUG, BM_MEM_PAYLOAD, bootmem_add_range(), bootmem_dump_ranges(), bootmem_walk(), config, fit_place_mem(), get_kernel_size(), NULL, region::offset, printk, prog_set_entry(), and region::size.