bootmem.c File Reference

#include <console/console.h>
#include <bootmem.h>
#include <cbmem.h>
#include <device/resource.h>
#include <symbols.h>
#include <assert.h>
#include <types.h>

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Data Structures
struct	range_strings

Functions
static int	bootmem_is_initialized (void)
static int	bootmem_memory_table_written (void)
void	bootmem_platform_add_ranges (void)
static uint32_t	bootmem_to_lb_tag (const enum bootmem_type tag)
static void	bootmem_init (void)
void	bootmem_add_range (uint64_t start, uint64_t size, const enum bootmem_type tag)
void	bootmem_write_memory_table (struct lb_memory *mem)
	Write memory coreboot table. More...
static const char *	bootmem_range_string (const enum bootmem_type tag)
void	bootmem_dump_ranges (void)
bool	bootmem_walk_os_mem (range_action_t action, void *arg)
	Walk memory tables from OS point of view and call the provided function, for every region. More...
bool	bootmem_walk (range_action_t action, void *arg)
	Walk memory tables and call the provided function, for every region. More...
int	bootmem_region_targets_type (uint64_t start, uint64_t size, enum bootmem_type dest_type)
void *	bootmem_allocate_buffer (size_t size)

Variables
static int	initialized
static int	table_written
static struct memranges	bootmem
static struct memranges	bootmem_os
static const struct range_strings	type_strings []

Function Documentation

bootmem_add_range()

void bootmem_add_range	(	uint64_t	start,
		uint64_t	size,
		const enum bootmem_type	tag
	)

Definition at line 88 of file bootmem.c.

References assert, BM_MEM_FIRST, BM_MEM_LAST, BM_MEM_OS_CUTOFF, bootmem, bootmem_is_initialized(), bootmem_memory_table_written(), bootmem_os, and memranges_insert().

Referenced by bootmem_arch_add_ranges(), bootmem_init(), bootmem_platform_add_ranges(), cbmem_add_bootmem(), and fit_payload_arch().

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bootmem_allocate_buffer()

void* bootmem_allocate_buffer

(

size_t

size

)

Definition at line 216 of file bootmem.c.

bootmem_dump_ranges()

void bootmem_dump_ranges

(

void

)

Definition at line 155 of file bootmem.c.

References BIOS_DEBUG, bootmem, bootmem_range_string(), memranges_each_entry, printk, range_entry_base(), range_entry_end(), and range_entry_tag().

Referenced by bootmem_write_memory_table(), fit_payload(), fit_payload_arch(), and segment_targets_type().

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bootmem_init()

static void bootmem_init ( void  )

static

Definition at line 59 of file bootmem.c.

References BM_MEM_RAM, BM_MEM_RAMSTAGE, BM_MEM_RESERVED, bootmem, bootmem_add_range(), bootmem_arch_add_ranges(), bootmem_os, bootmem_platform_add_ranges(), cbmem_add_bootmem(), initialized, IORESOURCE_CACHEABLE, IORESOURCE_RESERVE, memranges_add_resources(), memranges_clone(), memranges_init, and REGION_SIZE.

Referenced by bootmem_write_memory_table().

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bootmem_is_initialized()

static int bootmem_is_initialized ( void  )

static

Definition at line 16 of file bootmem.c.

References initialized.

Referenced by bootmem_add_range(), bootmem_walk(), and bootmem_walk_os_mem().

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bootmem_memory_table_written()

static int bootmem_memory_table_written ( void  )

static

Definition at line 21 of file bootmem.c.

References table_written.

Referenced by bootmem_add_range().

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bootmem_platform_add_ranges()

void bootmem_platform_add_ranges

(

void

)

Definition at line 27 of file bootmem.c.

Referenced by bootmem_init().

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bootmem_range_string()

static const char* bootmem_range_string ( const enum bootmem_type  tag )

static

Definition at line 143 of file bootmem.c.

References ARRAY_SIZE, range_strings::str, range_strings::tag, and type_strings.

Referenced by bootmem_dump_ranges().

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bootmem_region_targets_type()

int bootmem_region_targets_type	(	uint64_t	start,
		uint64_t	size,
		enum bootmem_type	dest_type
	)

Definition at line 197 of file bootmem.c.

References bootmem, range_entry::end, memranges_each_entry, range_entry_base(), range_entry_end(), and range_entry_tag().

Referenced by segment_targets_type().

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bootmem_to_lb_tag()

static uint32_t bootmem_to_lb_tag ( const enum bootmem_type  tag )

static

Definition at line 32 of file bootmem.c.

References BIOS_ERR, BM_MEM_ACPI, BM_MEM_BL31, BM_MEM_NVS, BM_MEM_OPENSBI, BM_MEM_RAM, BM_MEM_RESERVED, BM_MEM_TABLE, BM_MEM_UNUSABLE, BM_MEM_VENDOR_RSVD, LB_MEM_ACPI, LB_MEM_NVS, LB_MEM_RAM, LB_MEM_RESERVED, LB_MEM_TABLE, LB_MEM_UNUSABLE, LB_MEM_VENDOR_RSVD, and printk.

Referenced by bootmem_write_memory_table().

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bootmem_walk()

bool bootmem_walk	(	range_action_t	action,
		void *	arg
	)

Walk memory tables and call the provided function, for every region.

The caller has to return false to break out of the loop any time, or return true to continue.

Parameters

action	The function to call for each memory range.
arg	Pointer passed to function @action. Set to NULL if unused.

Returns

true if the function 'action' returned false.

Definition at line 183 of file bootmem.c.

References arg, assert, bootmem, bootmem_is_initialized(), and memranges_each_entry.

Referenced by fit_payload_arch().

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bootmem_walk_os_mem()

bool bootmem_walk_os_mem	(	range_action_t	action,
		void *	arg
	)

Walk memory tables from OS point of view and call the provided function, for every region.

The caller has to return false to break out of the loop any time, or return true to continue.

Parameters

action	The function to call for each memory range.
arg	Pointer passed to function @action. Set to NULL if unused.

Returns

true if the function 'action' returned false.

Definition at line 169 of file bootmem.c.

References arg, assert, bootmem_is_initialized(), bootmem_os, and memranges_each_entry.

Referenced by fit_update_memory().

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bootmem_write_memory_table()

void bootmem_write_memory_table

(

struct lb_memory *

mem

)

Write memory coreboot table.

Current resource map is serialized into memtable (LB_MEM_* types). bootmem library is unusable until this function is called first in the write tables path before payload is loaded.

Bootmem types match to LB_MEM tags, except for the following: BM_MEM_RAMSTAGE : Translates to LB_MEM_RAM. BM_MEM_PAYLOAD : Translates to LB_MEM_RAM. BM_MEM_BL31 : Translates to LB_MEM_RESERVED.

Definition at line 102 of file bootmem.c.

References bootmem_dump_ranges(), bootmem_init(), bootmem_os, bootmem_to_lb_tag(), lb_memory::map, memranges_each_entry, range_entry_base(), range_entry_size(), range_entry_tag(), lb_memory_range::size, lb_memory::size, lb_memory_range::start, table_written, and lb_memory_range::type.

Referenced by write_coreboot_table().

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Variable Documentation

bootmem

struct memranges bootmem

static

Definition at line 12 of file bootmem.c.

Referenced by bootmem_add_range(), bootmem_dump_ranges(), bootmem_init(), bootmem_region_targets_type(), and bootmem_walk().

bootmem_os

struct memranges bootmem_os

static

Definition at line 12 of file bootmem.c.

Referenced by bootmem_add_range(), bootmem_init(), bootmem_walk_os_mem(), and bootmem_write_memory_table().

initialized

int initialized

static

Definition at line 11 of file bootmem.c.

Referenced by as3722rtc_init(), bootmem_init(), bootmem_is_initialized(), and init_save_state().

table_written

int table_written

static

Definition at line 12 of file bootmem.c.

Referenced by bootmem_memory_table_written(), and bootmem_write_memory_table().

type_strings

const struct range_strings type_strings[]

static

Initial value:

= {
        { BM_MEM_RAM, "RAM" },
        { BM_MEM_RESERVED, "RESERVED" },
        { BM_MEM_ACPI, "ACPI" },
        { BM_MEM_NVS, "NVS" },
        { BM_MEM_UNUSABLE, "UNUSABLE" },
        { BM_MEM_VENDOR_RSVD, "VENDOR RESERVED" },
        { BM_MEM_BL31, "BL31" },
        { BM_MEM_OPENSBI, "OPENSBI" },
        { BM_MEM_TABLE, "CONFIGURATION TABLES" },
        { BM_MEM_RAMSTAGE, "RAMSTAGE" },
        { BM_MEM_PAYLOAD, "PAYLOAD" },
}

Definition at line 102 of file bootmem.c.

Referenced by bootmem_range_string().