mrc_cache.h File Reference

#include <stddef.h>
#include <stdint.h>
#include <commonlib/region.h>

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Enumerations
enum	{ MRC_TRAINING_DATA , MRC_VARIABLE_DATA }

Functions
ssize_t	mrc_cache_load_current (int type, uint32_t version, void *buffer, size_t buffer_size)
	mrc_cache_load_current More...
void *	mrc_cache_current_mmap_leak (int type, uint32_t version, size_t *data_size)
	mrc_cache_mmap_leak More...
int	mrc_cache_stash_data (int type, uint32_t version, const void *data, size_t size)
	Returns < 0 on error, 0 on success. More...

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
MRC_TRAINING_DATA
MRC_VARIABLE_DATA

Definition at line 10 of file mrc_cache.h.

Function Documentation

mrc_cache_current_mmap_leak()

void* mrc_cache_current_mmap_leak	(	int	type,
		uint32_t	version,
		size_t *	data_size
	)

mrc_cache_mmap_leak

Return a pointer to a buffer with the latest slot data. An mmap will be executed (without a matching unmap). This will be a common entry point for platforms where mmap is considered a noop, like x86

Definition at line 342 of file mrc_cache.c.

References BIOS_INFO, mrc_metadata::data_size, mrc_cache_find_current(), mrc_data_valid(), NULL, printk, rdev, rdev_mmap_full(), region_device_sz(), type, and version.

Referenced by check_region_overlap(), get_cached_training(), init_dram_ddr3(), OemInitResume(), platform_fsp_memory_init_params_cb(), prepare_mrc_cache(), raminit(), raminit_common(), and sdram_initialize().

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mrc_cache_load_current()

ssize_t mrc_cache_load_current	(	int	type,
		uint32_t	version,
		void *	buffer,
		size_t	buffer_size
	)

mrc_cache_load_current

Fill in the buffer with the latest slot data. This will be a common entry point for ARM platforms. Returns < 0 on error, size of the returned data on success.

Definition at line 319 of file mrc_cache.c.

References buffer, mrc_metadata::data_size, mrc_cache_find_current(), mrc_data_valid(), rdev, rdev_readat(), region_device_sz(), type, and version.

Referenced by mt_mem_init_run(), and qclib_load_and_run().

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mrc_cache_stash_data()

int mrc_cache_stash_data	(	int	type,
		uint32_t	version,
		const void *	data,
		size_t	size
	)

Returns < 0 on error, 0 on success.

Definition at line 687 of file mrc_cache.c.

References BIOS_ERR, BIOS_INFO, cbmem_add(), cache_region::cbmem_id, compute_ip_checksum(), CONFIG, mrc_metadata::header_checksum, lookup_region_type(), memcpy(), MRC_DATA_SIGNATURE, cache_region::name, NULL, printk, mrc_metadata::signature, type, update_mrc_cache_by_type(), and version.

Referenced by mainboard_romstage_entry(), mt_mem_init_run(), OemS3Save(), raminit(), raminit_common(), save_memory_training_data(), save_mrc_data(), save_timings(), sdram_initialize(), and write_table_entry().

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