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barebox
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Merge branch 'for-next/bootsource'

This commit is contained in:
Sascha Hauer 2013-04-04 12:03:19 +02:00
parent 0f38ea38bd d8d959ad2b
commit 7a552a41a4
16 changed files with 352 additions and 137 deletions
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3
arch/arm/boards/efika-mx-smartbook/board.c
View File

@ -14,6 +14,7 @@
*/
#include <common.h>
#include <bootsource.h>
#include <net.h>
#include <init.h>
#include <environment.h>
@ -479,7 +480,7 @@ device_initcall(efikamx_devices_init);
static int efikamx_part_init(void)
{
if (imx_bootsource() == bootsource_mmc) {
if (bootsource_get() == BOOTSOURCE_MMC) {
devfs_add_partition("mmc_left", 0x00000, 0x80000,
DEVFS_PARTITION_FIXED, "self0");
devfs_add_partition("mmc_left", 0x80000, 0x80000,

2
arch/arm/boards/efika-mx-smartbook/env/init/bootsource vendored
View File

@ -3,7 +3,7 @@
# by default pick kernel from MMC card if booting from
# it, otherwise default to boot from internal harddisk
if [ $barebox_loc = mmc ]; then
if [ $bootsource = mmc ]; then
global.boot.default=mmc-left
else
global.boot.default=hd-internal

7
arch/arm/boards/karo-tx53/board.c
View File

@ -13,6 +13,7 @@
*
*/
#include <common.h>
#include <bootsource.h>
#include <environment.h>
#include <fcntl.h>
#include <fec.h>
@ -234,13 +235,13 @@ static int tx53_part_init(void)
{
const char *envdev;
switch (imx_bootsource()) {
case bootsource_mmc:
switch (bootsource_get()) {
case BOOTSOURCE_MMC:
devfs_add_partition("disk0", 0x00000, SZ_512K, DEVFS_PARTITION_FIXED, "self0");
devfs_add_partition("disk0", SZ_512K, SZ_1M, DEVFS_PARTITION_FIXED, "env0");
envdev = "MMC";
break;
case bootsource_nand:
case BOOTSOURCE_NAND:
default:
devfs_add_partition("nand0", 0x00000, 0x80000, DEVFS_PARTITION_FIXED, "self_raw");
dev_add_bb_dev("self_raw", "self0");

5
arch/arm/boards/pcm038/pcm038.c
View File

@ -16,6 +16,7 @@
#define pr_fmt(fmt) "pcm038: " fmt
#include <common.h>
#include <bootsource.h>
#include <net.h>
#include <init.h>
#include <environment.h>
@ -299,8 +300,8 @@ static int pcm038_devices_init(void)
*/
imx27_add_fec(&fec_info);
switch (imx_bootsource()) {
case bootsource_nand:
switch (bootsource_get()) {
case BOOTSOURCE_NAND:
devfs_add_partition("nand0", 0x00000, 0x80000,
DEVFS_PARTITION_FIXED, "self_raw");
dev_add_bb_dev("self_raw", "self0");

7
arch/arm/boards/pcm043/pcm043.c
View File

@ -37,6 +37,7 @@
#include <fec.h>
#include <fb.h>
#include <led.h>
#include <bootsource.h>
#include <asm/mmu.h>
#include <mach/weim.h>
#include <mach/imx-ipu-fb.h>
@ -139,15 +140,15 @@ static int imx35_devices_init(void)
*/
add_cfi_flash_device(DEVICE_ID_DYNAMIC, MX35_CS0_BASE_ADDR, 32 * 1024 * 1024, 0);
switch (imx_bootsource()) {
case bootsource_nand:
switch (bootsource_get()) {
case BOOTSOURCE_NAND:
devfs_add_partition("nand0", 0x00000, SZ_512K, DEVFS_PARTITION_FIXED, "self_raw");
dev_add_bb_dev("self_raw", "self0");
devfs_add_partition("nand0", SZ_512K, SZ_256K, DEVFS_PARTITION_FIXED, "env_raw");
dev_add_bb_dev("env_raw", "env0");
envstr = "NAND";
break;
case bootsource_nor:
case BOOTSOURCE_NOR:
default:
devfs_add_partition("nor0", 0x00000, SZ_512K, DEVFS_PARTITION_FIXED, "self0"); /* ourself */
devfs_add_partition("nor0", SZ_512K, SZ_128K, DEVFS_PARTITION_FIXED, "env0"); /* environment */

182
arch/arm/mach-imx/boot.c
View File

@ -12,72 +12,43 @@
*/
#include <common.h>
#include <bootsource.h>
#include <environment.h>
#include <init.h>
#include <magicvar.h>
#include <io.h>
#include <mach/generic.h>
static const char *bootsource_str[] = {
[bootsource_unknown] = "unknown",
[bootsource_nand] = "nand",
[bootsource_nor] = "nor",
[bootsource_mmc] = "mmc",
[bootsource_i2c] = "i2c",
[bootsource_spi] = "spi",
[bootsource_serial] = "serial",
[bootsource_onenand] = "onenand",
[bootsource_hd] = "harddisk",
};
static enum imx_bootsource bootsource;
void imx_set_bootsource(enum imx_bootsource src)
{
if (src >= ARRAY_SIZE(bootsource_str))
src = bootsource_unknown;
bootsource = src;
setenv("barebox_loc", bootsource_str[src]);
export("barebox_loc");
}
enum imx_bootsource imx_bootsource(void)
{
return bootsource;
}
BAREBOX_MAGICVAR(barebox_loc, "The source barebox has been booted from");
#include <mach/imx25-regs.h>
#include <mach/imx35-regs.h>
/* [CTRL][TYPE] */
static const enum imx_bootsource locations[4][4] = {
static const enum bootsource locations[4][4] = {
{ /* CTRL = WEIM */
bootsource_nor,
bootsource_unknown,
bootsource_onenand,
bootsource_unknown,
BOOTSOURCE_NOR,
BOOTSOURCE_UNKNOWN,
BOOTSOURCE_ONENAND,
BOOTSOURCE_UNKNOWN,
}, { /* CTRL == NAND */
bootsource_nand,
bootsource_nand,
bootsource_nand,
bootsource_nand,
BOOTSOURCE_NAND,
BOOTSOURCE_NAND,
BOOTSOURCE_NAND,
BOOTSOURCE_NAND,
}, { /* CTRL == ATA, (imx35 only) */
bootsource_unknown,
bootsource_unknown, /* might be p-ata */
bootsource_unknown,
bootsource_unknown,
BOOTSOURCE_UNKNOWN,
BOOTSOURCE_UNKNOWN, /* might be p-ata */
BOOTSOURCE_UNKNOWN,
BOOTSOURCE_UNKNOWN,
}, { /* CTRL == expansion */
bootsource_mmc, /* note imx25 could also be: movinand, ce-ata */
bootsource_unknown,
bootsource_i2c,
bootsource_spi,
BOOTSOURCE_MMC, /* note imx25 could also be: movinand, ce-ata */
BOOTSOURCE_UNKNOWN,
BOOTSOURCE_I2C,
BOOTSOURCE_SPI,
}
};
/*
* Saves the boot source media into the $barebox_loc environment variable
* Saves the boot source media into the $bootsource environment variable
*
* This information is useful for barebox init scripts as we can then easily
* use a kernel image stored on the same media that we launch barebox with
@ -94,20 +65,31 @@ static const enum imx_bootsource locations[4][4] = {
* Note also that I suspect that the boot source pins are only sampled at
* power up.
*/
int imx_25_35_boot_save_loc(unsigned int ctrl, unsigned int type)
static void imx25_35_boot_save_loc(unsigned int ctrl, unsigned int type)
{
const char *bareboxloc = NULL;
enum imx_bootsource src;
enum bootsource src;
src = locations[ctrl][type];
imx_set_bootsource(src);
if (bareboxloc) {
setenv("barebox_loc", bareboxloc);
export("barebox_loc");
}
bootsource_set(src);
}
return 0;
void imx25_boot_save_loc(void __iomem *ccm_base)
{
uint32_t val;
val = readl(ccm_base + MX25_CCM_RCSR);
imx25_35_boot_save_loc((val >> MX25_CCM_RCSR_MEM_CTRL_SHIFT) & 0x3,
(val >> MX25_CCM_RCSR_MEM_TYPE_SHIFT) & 0x3);
}
void imx35_boot_save_loc(void __iomem *ccm_base)
{
uint32_t val;
val = readl(ccm_base + MX35_CCM_RCSR);
imx25_35_boot_save_loc((val >> MX35_CCM_RCSR_MEM_CTRL_SHIFT) & 0x3,
(val >> MX35_CCM_RCSR_MEM_TYPE_SHIFT) & 0x3);
}
#define IMX27_SYSCTRL_GPCR 0x18
@ -121,9 +103,9 @@ int imx_25_35_boot_save_loc(unsigned int ctrl, unsigned int type)
#define IMX27_GPCR_BOOT_32BIT_CS0 6
#define IMX27_GPCR_BOOT_8BIT_NAND_512 7
void imx_27_boot_save_loc(void __iomem *sysctrl_base)
void imx27_boot_save_loc(void __iomem *sysctrl_base)
{
enum imx_bootsource src;
enum bootsource src;
uint32_t val;
val = readl(sysctrl_base + IMX27_SYSCTRL_GPCR);
@ -132,20 +114,20 @@ void imx_27_boot_save_loc(void __iomem *sysctrl_base)
switch (val) {
case IMX27_GPCR_BOOT_UART_USB:
src = bootsource_serial;
src = BOOTSOURCE_SERIAL;
break;
case IMX27_GPCR_BOOT_8BIT_NAND_2k:
case IMX27_GPCR_BOOT_16BIT_NAND_2k:
case IMX27_GPCR_BOOT_16BIT_NAND_512:
case IMX27_GPCR_BOOT_8BIT_NAND_512:
src = bootsource_nand;
src = BOOTSOURCE_NAND;
break;
default:
src = bootsource_nor;
src = BOOTSOURCE_NOR;
break;
}
imx_set_bootsource(src);
bootsource_set(src);
}
#define IMX51_SRC_SBMR 0x4
@ -153,9 +135,9 @@ void imx_27_boot_save_loc(void __iomem *sysctrl_base)
#define IMX51_SBMR_BT_MEM_CTL_SHIFT 0
#define IMX51_SBMR_BMOD_SHIFT 14
int imx51_boot_save_loc(void __iomem *src_base)
void imx51_boot_save_loc(void __iomem *src_base)
{
enum imx_bootsource src = bootsource_unknown;
enum bootsource src = BOOTSOURCE_UNKNOWN;
uint32_t reg;
unsigned int ctrl, type;
@ -172,59 +154,69 @@ int imx51_boot_save_loc(void __iomem *src_base)
break;
case 1:
/* reserved */
src = bootsource_unknown;
src = BOOTSOURCE_UNKNOWN;
break;
case 3:
src = bootsource_serial;
src = BOOTSOURCE_SERIAL;
break;
}
imx_set_bootsource(src);
return 0;
bootsource_set(src);
}
#define IMX53_SRC_SBMR 0x4
int imx53_boot_save_loc(void __iomem *src_base)
void imx53_boot_save_loc(void __iomem *src_base)
{
enum imx_bootsource src = bootsource_unknown;
uint32_t cfg1 = readl(src_base + IMX53_SRC_SBMR) & 0xff;
enum bootsource src = BOOTSOURCE_UNKNOWN;
int instance;
uint32_t cfg1 = readl(src_base + IMX53_SRC_SBMR);
switch (cfg1 >> 4) {
switch ((cfg1 & 0xff) >> 4) {
case 2:
src = bootsource_hd;
src = BOOTSOURCE_HD;
break;
case 3:
if (cfg1 & (1 << 3))
src = bootsource_spi;
src = BOOTSOURCE_SPI;
else
src = bootsource_i2c;
src = BOOTSOURCE_I2C;
break;
case 4:
case 5:
case 6:
case 7:
src = bootsource_mmc;
src = BOOTSOURCE_MMC;
break;
default:
break;
}
if (cfg1 & (1 << 7))
src = bootsource_nand;
src = BOOTSOURCE_NAND;
imx_set_bootsource(src);
return 0;
switch (src) {
case BOOTSOURCE_MMC:
case BOOTSOURCE_SPI:
case BOOTSOURCE_I2C:
instance = (cfg1 >> 21) & 0x3;
break;
default:
instance = 0;
break;
}
bootsource_set(src);
bootsource_set_instance(instance);
}
#define IMX6_SRC_SBMR1 0x04
#define IMX6_SRC_SBMR2 0x1c
int imx6_boot_save_loc(void __iomem *src_base)
void imx6_boot_save_loc(void __iomem *src_base)
{
enum imx_bootsource src = bootsource_unknown;
enum bootsource src = BOOTSOURCE_UNKNOWN;
uint32_t sbmr2 = readl(src_base + IMX6_SRC_SBMR2) >> 24;
uint32_t cfg1 = readl(src_base + IMX6_SRC_SBMR1) & 0xff;
uint32_t boot_cfg_4_2_0;
@ -237,44 +229,44 @@ int imx6_boot_save_loc(void __iomem *src_base)
case 2: /* internal boot */
goto internal_boot;
case 1: /* Serial Downloader */
src = bootsource_serial;
src = BOOTSOURCE_SERIAL;
break;
case 3: /* reserved */
break;
};
imx_set_bootsource(src);
bootsource_set(src);
return 0;
return;
internal_boot:
switch (cfg1 >> 4) {
case 2:
src = bootsource_hd;
src = BOOTSOURCE_HD;
break;
case 3:
boot_cfg_4_2_0 = (cfg1 >> 16) & 0x7;
if (boot_cfg_4_2_0 > 4)
src = bootsource_i2c;
src = BOOTSOURCE_I2C;
else
src = bootsource_spi;
src = BOOTSOURCE_SPI;
break;
case 4:
case 5:
case 6:
case 7:
src = bootsource_mmc;
src = BOOTSOURCE_MMC;
break;
default:
break;
}
if (cfg1 & (1 << 7))
src = bootsource_nand;
src = BOOTSOURCE_NAND;
imx_set_bootsource(src);
bootsource_set(src);
return 0;
return;
}

6
arch/arm/mach-imx/imx25.c
View File

@ -59,11 +59,7 @@ static struct imx_iim_platform_data imx25_iim_pdata = {
static int imx25_init(void)
{
uint32_t val;
val = readl(MX25_CCM_BASE_ADDR + MX25_CCM_RCSR);
imx_25_35_boot_save_loc((val >> MX25_CCM_RCSR_MEM_CTRL_SHIFT) & 0x3,
(val >> MX25_CCM_RCSR_MEM_TYPE_SHIFT) & 0x3);
imx25_boot_save_loc((void *)MX25_CCM_BASE_ADDR);
add_generic_device("imx_iim", 0, NULL, MX25_IIM_BASE_ADDR, SZ_4K,
IORESOURCE_MEM, &imx25_iim_pdata);

2
arch/arm/mach-imx/imx27.c
View File

@ -99,7 +99,7 @@ static void imx27_init_max(void)
static int imx27_init(void)
{
imx27_silicon_revision();
imx_27_boot_save_loc((void *)MX27_SYSCTRL_BASE_ADDR);
imx27_boot_save_loc((void *)MX27_SYSCTRL_BASE_ADDR);
imx_iomuxv1_init((void *)MX27_GPIO1_BASE_ADDR);

6
arch/arm/mach-imx/imx35.c
View File

@ -59,13 +59,9 @@ core_initcall(imx35_l2_fix);
static int imx35_init(void)
{
uint32_t val;
imx35_silicon_revision();
val = readl(MX35_CCM_BASE_ADDR + MX35_CCM_RCSR);
imx_25_35_boot_save_loc((val >> MX35_CCM_RCSR_MEM_CTRL_SHIFT) & 0x3,
(val >> MX35_CCM_RCSR_MEM_TYPE_SHIFT) & 0x3);
imx35_boot_save_loc((void *)MX35_CCM_BASE_ADDR);
add_generic_device("imx_iim", 0, NULL, MX35_IIM_BASE_ADDR, SZ_4K,
IORESOURCE_MEM, NULL);

2
arch/arm/mach-imx/imx51.c
View File

@ -77,7 +77,7 @@ static int imx51_init(void)
postcore_initcall(imx51_init);
/*
* Saves the boot source media into the $barebox_loc environment variable
* Saves the boot source media into the $bootsource environment variable
*
* This information is useful for barebox init scripts as we can then easily
* use a kernel image stored on the same media that we launch barebox with

26
arch/arm/mach-imx/include/mach/generic.h
View File

@ -1,26 +1,12 @@
u64 imx_uid(void);
enum imx_bootsource {
bootsource_unknown,
bootsource_nand,
bootsource_nor,
bootsource_mmc,
bootsource_i2c,
bootsource_spi,
bootsource_serial,
bootsource_onenand,
bootsource_hd,
};
enum imx_bootsource imx_bootsource(void);
void imx_set_bootsource(enum imx_bootsource src);
int imx_25_35_boot_save_loc(unsigned int ctrl, unsigned int type);
void imx_27_boot_save_loc(void __iomem *sysctrl_base);
int imx51_boot_save_loc(void __iomem *src_base);
int imx53_boot_save_loc(void __iomem *src_base);
int imx6_boot_save_loc(void __iomem *src_base);
void imx25_boot_save_loc(void __iomem *ccm_base);
void imx35_boot_save_loc(void __iomem *ccm_base);
void imx27_boot_save_loc(void __iomem *sysctrl_base);
void imx51_boot_save_loc(void __iomem *src_base);
void imx53_boot_save_loc(void __iomem *src_base);
void imx6_boot_save_loc(void __iomem *src_base);
/* There's a off-by-one betweem the gpio bank number and the gpiochip */
/* range e.g. GPIO_1_5 is gpio 5 under linux */

99
arch/arm/mach-mxs/imx.c
View File

@ -14,11 +14,15 @@
*/
#include <common.h>
#include <bootsource.h>
#include <command.h>
#include <complete.h>
#include <init.h>
#include <io.h>
#include <mach/generic.h>
#include <mach/imx-regs.h>
#include <mach/revision.h>
#define HW_RTC_PERSISTENT1 0x070
@ -55,3 +59,98 @@ BAREBOX_CMD_START(dump_clocks)
.usage = "show clock frequencies",
BAREBOX_CMD_COMPLETE(empty_complete)
BAREBOX_CMD_END
static int __silicon_revision = SILICON_REVISION_UNKNOWN;
int silicon_revision_get(void)
{
return __silicon_revision;
}
void silicon_revision_set(const char *soc, int revision)
{
__silicon_revision = revision;
printf("detected %s revision %d.%d\n", soc,
(revision >> 4) & 0xf, revision & 0xf);
}
#define HW_DIGCTL_CHIPID (0x8001c310)
#define HW_DIGCTL_CHIPID_MASK (0xffff << 16)
#define HW_DIGCTL_CHIPID_MX23 (0x3780 << 16)
#define HW_DIGCTL_CHIPID_MX28 (0x2800 << 16)
static void mxs_silicon_revision(void)
{
enum silicon_revision revision = SILICON_REVISION_UNKNOWN;
const char *product = "unknown";
uint32_t reg;
uint8_t rev;
reg = readl((void __iomem *)HW_DIGCTL_CHIPID);
rev = reg & 0xff;
switch (reg & HW_DIGCTL_CHIPID_MASK) {
case HW_DIGCTL_CHIPID_MX23:
product = "i.MX23";
switch (rev) {
case 0x0: revision = SILICON_REVISION_1_0; break;
case 0x1: revision = SILICON_REVISION_1_1; break;
case 0x2: revision = SILICON_REVISION_1_2; break;
case 0x3: revision = SILICON_REVISION_1_3; break;
case 0x4: revision = SILICON_REVISION_1_4; break;
}
case HW_DIGCTL_CHIPID_MX28:
product = "i.MX28";
switch (rev) {
case 0x1: revision = SILICON_REVISION_1_2; break;
}
}
silicon_revision_set(product, revision);
}
#define MX28_REV_1_0_MODE (0x0001a7f0)
#define MX28_REV_1_2_MODE (0x00019bf0)
static void mxs_boot_save_loc(void)
{
enum bootsource src = BOOTSOURCE_UNKNOWN;
int instance = 0;
uint32_t mode = 0xff;
if (cpu_is_mx23()) {
/* not implemented yet */
} else if (cpu_is_mx28()) {
enum silicon_revision rev = silicon_revision_get();
if (rev == SILICON_REVISION_1_2)
mode = *(uint32_t *)MX28_REV_1_2_MODE;
else
mode = *(uint32_t *)MX28_REV_1_0_MODE;
}
switch (mode & 0xf) {
case 0x0: src = BOOTSOURCE_USB; break; /* "USB" */
case 0x1: src = BOOTSOURCE_I2C_EEPROM; break; /* "I2C, master" */
case 0x3: instance = 1; /* fallthrough */ /* "SSP SPI #2, master, NOR" */
case 0x2: src = BOOTSOURCE_SPI_NOR; break; /* "SSP SPI #1, master, NOR" */
case 0x4: src = BOOTSOURCE_NAND; break; /* "NAND" */
case 0x8: src = BOOTSOURCE_SPI_EEPROM; break; /* "SSP SPI #3, master, EEPROM" */
case 0xa: instance = 1; /* fallthrough */ /* "SSP SD/MMC #1" */
case 0x9: src = BOOTSOURCE_MMC; break; /* "SSP SD/MMC #0" */
}
bootsource_set(src);
bootsource_set_instance(instance);
}
static int mxs_init(void)
{
mxs_silicon_revision();
mxs_boot_save_loc();
return 0;
}
postcore_initcall(mxs_init);

24
arch/arm/mach-mxs/include/mach/revision.h Normal file
View File

@ -0,0 +1,24 @@
#ifndef __MACH_REVISION_H__
#define __MACH_REVISION_H__
/* silicon revisions */
enum silicon_revision {
SILICON_REVISION_1_0 = 0x10,
SILICON_REVISION_1_1 = 0x11,
SILICON_REVISION_1_2 = 0x12,
SILICON_REVISION_1_3 = 0x13,
SILICON_REVISION_1_4 = 0x14,
SILICON_REVISION_2_0 = 0x20,
SILICON_REVISION_2_1 = 0x21,
SILICON_REVISION_2_2 = 0x22,
SILICON_REVISION_2_3 = 0x23,
SILICON_REVISION_3_0 = 0x30,
SILICON_REVISION_3_1 = 0x31,
SILICON_REVISION_3_2 = 0x32,
SILICON_REVISION_UNKNOWN =0xff
};
int silicon_revision_get(void);
void silicon_revision_set(const char *soc, int revision);
#endif /* __MACH_REVISION_H__ */

1
common/Makefile
View File

@ -40,6 +40,7 @@ obj-$(CONFIG_PASSWORD) += password.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_FLEXIBLE_BOOTARGS) += bootargs.o
obj-$(CONFIG_BAREBOX_UPDATE) += bbu.o
obj-y += bootsource.o
extra-$(CONFIG_MODULES) += module.lds
extra-y += barebox_default_env barebox_default_env.h

90
common/bootsource.c Normal file
View File

@ -0,0 +1,90 @@
/*
*
* Copyright (C) 2011 Marc Reilly <marc@cpdesign.com.au>
* Copyright (C) 2013 Marc Kleine-Budde <mkl@pengutronix.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <bootsource.h>
#include <environment.h>
#include <magicvar.h>
#include <init.h>
static const char *bootsource_str[] = {
[BOOTSOURCE_UNKNOWN] = "unknown",
[BOOTSOURCE_NAND] = "nand",
[BOOTSOURCE_NOR] = "nor",
[BOOTSOURCE_MMC] = "mmc",
[BOOTSOURCE_I2C] = "i2c",
[BOOTSOURCE_I2C_EEPROM] = "i2c-eeprom",
[BOOTSOURCE_SPI] = "spi",
[BOOTSOURCE_SPI_EEPROM] = "spi-eeprom",
[BOOTSOURCE_SPI_NOR] = "spi-nor",
[BOOTSOURCE_SERIAL] = "serial",
[BOOTSOURCE_ONENAND] = "onenand",
[BOOTSOURCE_HD] = "harddisk",
[BOOTSOURCE_USB] = "usb",
};
static enum bootsource bootsource = BOOTSOURCE_UNKNOWN;
static int bootsource_instance = BOOTSOURCE_INSTANCE_UNKNOWN;
void bootsource_set(enum bootsource src)
{
if (src >= ARRAY_SIZE(bootsource_str))
src = BOOTSOURCE_UNKNOWN;
bootsource = src;
setenv("bootsource", bootsource_str[src]);
}
void bootsource_set_instance(int instance)
{
char buf[32];
bootsource_instance = instance;
if (instance < 0)
sprintf(buf, "unknown");
else
snprintf(buf, sizeof(buf), "%d", instance);
setenv("bootsource_instance", buf);
}
enum bootsource bootsource_get(void)
{
return bootsource;
}
BAREBOX_MAGICVAR(bootsource, "The source barebox has been booted from");
int bootsource_get_instance(void)
{
return bootsource_instance;
}
BAREBOX_MAGICVAR(bootsource_instance, "The instance of the source barebox has been booted from");
static int bootsource_init(void)
{
bootsource_set(bootsource);
bootsource_set_instance(bootsource_instance);
export("bootsource");
export("bootsource_instance");
return 0;
}
coredevice_initcall(bootsource_init);

27
include/bootsource.h Normal file
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#ifndef __BOOTSOURCE_H__
#define __BOOTSOURCE_H__
enum bootsource {
BOOTSOURCE_UNKNOWN,
BOOTSOURCE_NAND,
BOOTSOURCE_NOR,
BOOTSOURCE_MMC,
BOOTSOURCE_I2C,
BOOTSOURCE_I2C_EEPROM,
BOOTSOURCE_SPI,
BOOTSOURCE_SPI_EEPROM,
BOOTSOURCE_SPI_NOR,
BOOTSOURCE_SERIAL,
BOOTSOURCE_ONENAND,
BOOTSOURCE_HD,
BOOTSOURCE_USB,
};
#define BOOTSOURCE_INSTANCE_UNKNOWN -1
enum bootsource bootsource_get(void);
int bootsource_get_instance(void);
void bootsource_set(enum bootsource src);
void bootsource_set_instance(int instance);
#endif /* __BOOTSOURCE_H__ */