Commit 5487ab4a authored by Feng Tang's avatar Feng Tang Committed by Len Brown
Browse files

SFI: add support for v0.81 spec 



There are 2 major changes from v0.81 to v0.7:
1. Consolidating the SPIB/I2CB tables into a new DEVS table,
   which is more expandable and can support other bus types
   than spi/i2c.
2. Creating a new GPIO table, which list all the GPIO pins
   used in the platform.

However, to avoid breaking current platforms who use SFI v0.7
version firmware, the definitions for SPIB/I2CB will still
be kept for a while

Signed-off-by: default avatarFeng Tang <feng.tang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent e40152ee

drivers/sfi/sfi_core.c

+1 −1
Original line number Diff line number Diff line
@@ -390,7 +390,7 @@ void __init sfi_init(void) 
	if (sfi_disabled)

		return;



	pr_info("Simple Firmware Interface v0.7 http://simplefirmware.org\n");

	pr_info("Simple Firmware Interface v0.81 http://simplefirmware.org\n");



	if (sfi_find_syst() || sfi_parse_syst() || sfi_platform_init())

		disable_sfi();

include/linux/sfi.h

+23 −1
Original line number Diff line number Diff line
@@ -73,6 +73,8 @@ 
#define SFI_SIG_SPIB		"SPIB"

#define SFI_SIG_I2CB		"I2CB"

#define SFI_SIG_GPEM		"GPEM"

#define SFI_SIG_DEVS		"DEVS"

#define SFI_SIG_GPIO		"GPIO"



#define SFI_SIGNATURE_SIZE	4

#define SFI_OEM_ID_SIZE		6
@@ -145,6 +147,27 @@ struct sfi_rtc_table_entry { 
	u32	irq;

} __packed;



struct sfi_device_table_entry {

	u8	type;		/* bus type, I2C, SPI or ...*/

#define SFI_DEV_TYPE_SPI	0

#define SFI_DEV_TYPE_I2C	1

#define SFI_DEV_TYPE_UART	2

#define SFI_DEV_TYPE_HSI	3

#define SFI_DEV_TYPE_IPC	4



	u8	host_num;	/* attached to host 0, 1...*/

	u16	addr;

	u8	irq;

	u32	max_freq;

	char	name[16];

} __packed;



struct sfi_gpio_table_entry {

	char	controller_name[16];

	u16	pin_no;

	char	pin_name[16];

} __packed;



struct sfi_spi_table_entry {

	u16	host_num;	/* attached to host 0, 1...*/

	u16	cs;		/* chip select */
@@ -166,7 +189,6 @@ struct sfi_gpe_table_entry { 
	u16	phys_id;	/* physical GPE id */

} __packed;





typedef int (*sfi_table_handler) (struct sfi_table_header *table);



#ifdef CONFIG_SFI

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