sys-dram.h File Reference

#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <reg/reg-dram.h>

Include dependency graph for sys-dram.h:

Go to the source code of this file.

Classes
struct	dram_para_t

Macros
#define	SDRAM_BASE   (0x40000000)

Enumerations
enum	sunxi_dram_type { SUNXI_DRAM_TYPE_DDR2 = 2 , SUNXI_DRAM_TYPE_DDR3 = 3 , SUNXI_DRAM_TYPE_LPDDR2 = 6 , SUNXI_DRAM_TYPE_LPDDR3 = 7 }

Functions
uint32_t	sunxi_get_dram_size ()
	Get the size of the DRAM (Dynamic Random Access Memory).
uint32_t	sunxi_dram_init (void *para)
	Initialize the DRAM.

Macro Definition Documentation

SDRAM_BASE

#define SDRAM_BASE   (0x40000000)

Enumeration Type Documentation

sunxi_dram_type

enum sunxi_dram_type

Enumerator
SUNXI_DRAM_TYPE_DDR2
SUNXI_DRAM_TYPE_DDR3
SUNXI_DRAM_TYPE_LPDDR2
SUNXI_DRAM_TYPE_LPDDR3

Function Documentation

sunxi_dram_init()

uint32_t sunxi_dram_init

(

void *

para

)

Initialize the DRAM.

This function initializes the DRAM with the specified parameters. The initialization process may involve configuration of memory controllers and other hardware settings. The user must provide a pointer to a structure containing the necessary initialization parameters.

Parameters

para	A pointer to a structure containing the parameters needed for the initialization process.

Returns

A status code indicating the result of the initialization. Typically returns zero on success and a non-zero value on failure.

Initialize the DRAM.

This function initializes the DRAM using the provided parameters encapsulated in the dram_para_t structure. It calls the init_DRAM function to perform the actual initialization and returns the result.

Parameters

para	A pointer to the dram_para_t structure that contains DRAM initialization parameters. The function casts this void pointer to a dram_para_t pointer.

Returns

uint32_t Returns the result of the init_DRAM function call, which represents the size of the initialized DRAM in MB. A return value of 0 indicates failure.

sunxi_get_dram_size()

uint32_t sunxi_get_dram_size

(

)

Get the size of the DRAM (Dynamic Random Access Memory).

This function retrieves the total size of the DRAM available in the system. The size is returned in bytes.

Returns

The size of the DRAM in bytes.