arch/arm/mach-omap/include/mach/sys_info.h File Reference

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Detailed Description

FileName: include/asm-arm/arch-omap/sys_info.h

These are implemented by the System specific code in omapX-generic.c

Originally from http://linux.omap.com/pub/bootloader/3430sdp/u-boot-v1.tar.gz

Functions
u32	get_cpu_type (void)
u32	get_cpu_rev (void)
u32	get_sdr_cs_size (u32 offset)
u32	get_sysboot_value (void)
u32	get_gpmc0_base (void)
u32	get_base (void)
u32	running_in_flash (void)
u32	running_in_sram (void)
u32	running_in_sdram (void)
u32	get_boot_type (void)
u32	get_device_type (void)

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Define Documentation

#define CPU_ES1   1

CPU revision.

Referenced by get_cpu_rev().

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Function Documentation

u32 get_base

(

void

)

Get the upper address of current execution.

we can use this to figure out if we are running in SRAM / XIP Flash or in SDRAM

Returns:

base address

Referenced by running_in_flash(), running_in_sdram(), and running_in_sram().

u32 get_boot_type

(

void

)

Is this an XIP type device or a stream one.

Sysboot bits 4-0 specify type. Bit 5, sys mem/perif

Returns:

Boot type

u32 get_cpu_rev

(

void

)

Extract the OMAP ES rev.

Returns:

CPU_ES version

Referenced by prcm_init().

u32 get_cpu_type

(

void

)

These are implemented by the System specific code in omapX-generic.c.

These are implemented by the System specific code in omapX-generic.c.

Returns:

CPU_3430

u32 get_device_type

(

void

)

What type of device are we?

are we on a GP/HS/EMU/TEST device?

Returns:

device type

Referenced by a_init().

u32 get_gpmc0_base

(

void

)

Return the current CS0 base address.

Return current address hardware will be fetching from. The below effectively gives what is correct, its a bit mis-leading compared to the TRM. For the most general case the mask needs to be also taken into account this does work in practice.

Returns:

base address

u32 get_sdr_cs_size

(

u32

offset

)

Get size of chip select 0/1.

Parameters:

[in]

offset

give the offset if we need CS1

Returns:

return the sdram size.

u32 get_sysboot_value

(

void

)

[inline]

Get the initial SYSBOOT value.

SYSBOOT is useful to know which state OMAP booted from.

Returns:

- Return the value of SYSBOOT.

Referenced by get_boot_type().

u32 running_in_flash

(

void

)

Are we running in Flash XIP?

If the base is in GPMC address space, we probably are!

Returns:

1 if we are running in XIP mode, else return 0

Referenced by prcm_init().

u32 running_in_sdram

(

void

)

Are we running in SDRAM?

if we are not in GPMC nor in SRAM address space, we are in SDRAM execution area

Returns:

1 if we are running from SDRAM, else return 0

Referenced by board_init().

u32 running_in_sram

(

void

)

Are we running in OMAP internal SRAM?

If in SRAM address, then yes!

Returns:

1 if we are running in SRAM, else return 0

Referenced by prcm_init().