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-rw-r--r--arch/arm/Kconfig7
-rw-r--r--arch/arm/boards/archosg9/Makefile1
-rw-r--r--arch/arm/boards/archosg9/archos_features.c225
-rw-r--r--arch/arm/boards/archosg9/archos_features.h22
-rw-r--r--arch/arm/boards/archosg9/board.c2
-rw-r--r--arch/arm/boards/archosg9/feature_list.h352
-rw-r--r--arch/arm/configs/archosg9_defconfig1
-rw-r--r--arch/arm/include/asm/armlinux.h9
-rw-r--r--arch/arm/lib/armlinux.c12
9 files changed, 631 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f567531d1b..6f7a71f2cb 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -152,6 +152,13 @@ config THUMB2_BAREBOX
your board lowlevel init code may break in thumb-2 mode. You have been
warned.
+config ARM_BOARD_APPEND_ATAG
+ bool "Let board specific code to add ATAGs to be passed to the kernel"
+ depends on ARM_LINUX
+ help
+ This option is purely to start some vendor provided kernels.
+ ** DO NOT USE FOR YOUR OWN DESIGNS! **
+
endmenu
menu "Arm specific settings"
diff --git a/arch/arm/boards/archosg9/Makefile b/arch/arm/boards/archosg9/Makefile
index 256eaf6167..450c03f2ab 100644
--- a/arch/arm/boards/archosg9/Makefile
+++ b/arch/arm/boards/archosg9/Makefile
@@ -1,3 +1,4 @@
obj-y += board.o
+obj-$(CONFIG_ARM_BOARD_APPEND_ATAG) += archos_features.o
obj-$(CONFIG_MACH_DO_LOWLEVEL_INIT) += lowlevel.o mux.o
pbl-$(CONFIG_MACH_DO_LOWLEVEL_INIT) += lowlevel.o mux.o
diff --git a/arch/arm/boards/archosg9/archos_features.c b/arch/arm/boards/archosg9/archos_features.c
new file mode 100644
index 0000000000..5d934038fd
--- /dev/null
+++ b/arch/arm/boards/archosg9/archos_features.c
@@ -0,0 +1,225 @@
+/*
+ * 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 <boot.h>
+#include <asm/setup.h>
+#include "archos_features.h"
+#include "feature_list.h"
+
+static inline void *atag_data(struct tag *t)
+{
+ return ((void *)t) + sizeof(struct tag_header);
+}
+
+static struct feature_tag *features;
+
+static void setup_feature_core(void)
+{
+ features->hdr.tag = FTAG_CORE;
+ features->hdr.size = feature_tag_size(feature_tag_core);
+
+ features->u.core.magic = FEATURE_LIST_MAGIC;
+ features->u.core.list_revision = FEATURE_LIST_REV;
+ features->u.core.flags = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_product_name(void)
+{
+ features->hdr.tag = FTAG_PRODUCT_NAME;
+ features->hdr.size = feature_tag_size(feature_tag_product_name);
+
+ memset(features->u.product_name.name, 0,
+ sizeof(features->u.product_name.name));
+ sprintf(features->u.product_name.name, "A80S");
+ features->u.product_name.id = 0x13A8;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_product_serial_number(void)
+{
+ features->hdr.tag = FTAG_PRODUCT_SERIAL_NUMBER;
+ features->hdr.size = feature_tag_size(feature_tag_product_serial);
+
+ features->u.product_serial.serial[0] = 0;
+ features->u.product_serial.serial[1] = 0;
+ features->u.product_serial.serial[2] = 0;
+ features->u.product_serial.serial[3] = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_product_mac_address(void)
+{
+ features->hdr.tag = FTAG_PRODUCT_MAC_ADDRESS;
+ features->hdr.size = feature_tag_size(feature_tag_product_mac_address);
+
+ features->u.mac_address.addr[0] = 0;
+ features->u.mac_address.addr[1] = 0;
+ features->u.mac_address.addr[2] = 0;
+ features->u.mac_address.addr[3] = 0;
+ features->u.mac_address.addr[4] = 0;
+ features->u.mac_address.addr[5] = 0;
+ features->u.mac_address.reserved1 = 0;
+ features->u.mac_address.reserved2 = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_board_pcb_revision(void)
+{
+ features->hdr.tag = FTAG_BOARD_PCB_REVISION;
+ features->hdr.size = feature_tag_size(feature_tag_board_revision);
+
+ features->u.board_revision.revision = 5;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_sdram(void)
+{
+ features->hdr.tag = FTAG_SDRAM;
+ features->hdr.size = feature_tag_size(feature_tag_sdram);
+
+ memset(features->u.sdram.vendor, 0, sizeof(features->u.sdram.vendor));
+ memset(features->u.sdram.product, 0,
+ sizeof(features->u.sdram.product));
+ sprintf(features->u.sdram.vendor , "elpida");
+ sprintf(features->u.sdram.product, "EDB8064B1PB"/*"EDB4064B2PB"*/);
+ features->u.sdram.type = 0;
+ features->u.sdram.revision = 0;
+ features->u.sdram.flags = 0;
+ features->u.sdram.clock = 400;
+ features->u.sdram.param_0 = 0;
+ features->u.sdram.param_1 = 0;
+ features->u.sdram.param_2 = 0;
+ features->u.sdram.param_3 = 0;
+ features->u.sdram.param_4 = 0;
+ features->u.sdram.param_5 = 0;
+ features->u.sdram.param_6 = 0;
+ features->u.sdram.param_7 = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_pmic(void)
+{
+ features->hdr.tag = FTAG_PMIC;
+ features->hdr.size = feature_tag_size(feature_tag_pmic);
+
+ features->u.pmic.flags = FTAG_PMIC_TPS62361;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_serial_port(void)
+{
+ features->hdr.tag = FTAG_SERIAL_PORT;
+ features->hdr.size = feature_tag_size(feature_tag_serial_port);
+
+ features->u.serial_port.uart_id = 1;
+ features->u.serial_port.speed = 115200;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_has_gpio_volume_keys(void)
+{
+ features->hdr.tag = FTAG_HAS_GPIO_VOLUME_KEYS;
+ features->hdr.size = feature_tag_size(feature_tag_gpio_volume_keys);
+
+ features->u.gpio_volume_keys.gpio_vol_up = 0x2B;
+ features->u.gpio_volume_keys.gpio_vol_down = 0x2C;
+ features->u.gpio_volume_keys.flags = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_screen(void)
+{
+ features->hdr.tag = FTAG_SCREEN;
+ features->hdr.size = feature_tag_size(feature_tag_screen);
+
+ memset(features->u.screen.vendor, 0,
+ sizeof(features->u.screen.vendor));
+ sprintf(features->u.screen.vendor, "CMI");
+ features->u.screen.type = 0;
+ features->u.screen.revision = 0;
+ features->u.screen.vcom = 0;
+ features->u.screen.backlight = 0xC8;
+ features->u.screen.reserved[0] = 0;
+ features->u.screen.reserved[1] = 0;
+ features->u.screen.reserved[2] = 0;
+ features->u.screen.reserved[3] = 0;
+ features->u.screen.reserved[4] = 0;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_turbo(void)
+{
+ features->hdr.tag = FTAG_TURBO;
+ features->hdr.size = feature_tag_size(feature_tag_turbo);
+
+ features->u.turbo.flag = 1;
+
+ features = feature_tag_next(features);
+}
+static void setup_feature_none(void)
+{
+ features->hdr.tag = FTAG_NONE;
+ features->hdr.size = sizeof(struct feature_tag_header) >> 2;
+
+ features = feature_tag_next(features);
+}
+static struct tag *setup_feature_list(struct tag * params)
+{
+ struct tag_feature_list *fl;
+
+ fl = atag_data(params);
+ features = (struct feature_tag *)fl->data;
+
+ setup_feature_core();
+ setup_feature_product_name();
+ setup_feature_product_serial_number();
+ setup_feature_product_mac_address();
+ setup_feature_board_pcb_revision();
+ setup_feature_sdram();
+ setup_feature_pmic();
+ setup_feature_serial_port();
+ setup_feature_has_gpio_volume_keys();
+ setup_feature_screen();
+ setup_feature_turbo();
+ setup_feature_none();
+
+ fl->size = ((u32)features) - ((u32)(fl->data));
+
+ params->hdr.tag = ATAG_FEATURE_LIST;
+ params->hdr.size = (sizeof(struct tag_feature_list) + fl->size) >> 2;
+
+ return tag_next(params);
+}
+
+static struct tag *setup_boot_version(struct tag *params)
+{
+ struct tag_boot_version *bv;
+
+ bv = atag_data(params);
+
+ params->hdr.tag = ATAG_BOOT_VERSION;
+ params->hdr.size = tag_size(tag_boot_version);
+
+ bv->major = 5;
+ bv->minor = 5;
+ bv->extra = 3;
+
+ return tag_next(params);
+}
+
+struct tag *archos_append_atags(struct tag *params)
+{
+ params = setup_feature_list(params);
+ params = setup_boot_version(params);
+ return params;
+}
diff --git a/arch/arm/boards/archosg9/archos_features.h b/arch/arm/boards/archosg9/archos_features.h
new file mode 100644
index 0000000000..5769c6c668
--- /dev/null
+++ b/arch/arm/boards/archosg9/archos_features.h
@@ -0,0 +1,22 @@
+#ifndef __ARCHOS_FEATURES_H
+#define __ARCHOS_FEATURES_H
+
+/* bootloader version */
+#define ATAG_BOOT_VERSION 0x5441000A
+
+struct tag_boot_version {
+ u32 major;
+ u32 minor;
+ u32 extra;
+};
+
+#define ATAG_FEATURE_LIST 0x5441000B
+
+struct tag_feature_list {
+ u32 size;
+ u8 data[0];
+};
+
+struct tag *archos_append_atags(struct tag * params);
+
+#endif /* __ARCHOS_FEATURES_H */
diff --git a/arch/arm/boards/archosg9/board.c b/arch/arm/boards/archosg9/board.c
index 200fe92958..8366ccafea 100644
--- a/arch/arm/boards/archosg9/board.c
+++ b/arch/arm/boards/archosg9/board.c
@@ -20,6 +20,7 @@
#include <sizes.h>
#include <i2c/i2c.h>
#include <gpio.h>
+#include "archos_features.h"
static int archosg9_console_init(void){
if (IS_ENABLED(CONFIG_DRIVER_SERIAL_OMAP4_USBBOOT))
@@ -59,6 +60,7 @@ static int archosg9_devices_init(void){
*/
armlinux_set_architecture(5032);
armlinux_set_revision(5);
+ armlinux_set_atag_appender(archos_append_atags);
return 0;
}
diff --git a/arch/arm/boards/archosg9/feature_list.h b/arch/arm/boards/archosg9/feature_list.h
new file mode 100644
index 0000000000..0b726cd1a3
--- /dev/null
+++ b/arch/arm/boards/archosg9/feature_list.h
@@ -0,0 +1,352 @@
+#ifndef _FEATURE_LIST_H
+#define _FEATURE_LIST_H
+
+/*
+ This file comes from:
+ http://gitorious.org/archos/archos-gpl-gen9-kernel-ics/blobs/raw/master/
+ arch/arm/include/asm/feature_list.h
+*/
+
+#define FEATURE_LIST_MAGIC 0xFEA01234
+
+#define FEATURE_LIST_REV 0x00000001
+
+struct feature_tag_header {
+ u32 size;
+ u32 tag;
+};
+
+struct feature_tag_generic {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+#define FTAG_NONE 0x00000000
+
+#define FTAG_CORE 0x00000001
+struct feature_tag_core {
+ u32 magic;
+ u32 list_revision;
+ u32 flags;
+};
+
+/* product specific */
+#define FTAG_PRODUCT_NAME 0x00000002
+struct feature_tag_product_name {
+ char name[64];
+ u32 id;
+};
+#define FTAG_PRODUCT_SERIAL_NUMBER 0x00000003
+struct feature_tag_product_serial {
+ u32 serial[4];
+};
+
+#define FTAG_PRODUCT_MAC_ADDRESS 0x00000004
+struct feature_tag_product_mac_address {
+ u8 addr[6];
+ u8 reserved1;
+ u8 reserved2;
+};
+
+#define FTAG_PRODUCT_OEM 0x00000005
+struct feature_tag_product_oem {
+ char name[16];
+ u32 id;
+};
+
+#define FTAG_PRODUCT_ZONE 0x00000006
+struct feature_tag_product_zone {
+ char name[16];
+ u32 id;
+};
+
+/* board pcb specific */
+#define FTAG_BOARD_PCB_REVISION 0x00000010
+struct feature_tag_board_revision {
+ u32 revision;
+};
+
+/* clock and ram setup */
+#define FTAG_CLOCK 0x00000011
+struct feature_tag_clock {
+ u32 clock;
+};
+
+#define FTAG_SDRAM 0x00000012
+struct feature_tag_sdram {
+ char vendor[16];
+ char product[32];
+ u32 type;
+ u32 revision;
+ u32 flags;
+ u32 clock;
+ /* custom params */
+ u32 param_0;
+ u32 param_1;
+ u32 param_2;
+ u32 param_3;
+ u32 param_4;
+ u32 param_5;
+ u32 param_6;
+ u32 param_7;
+};
+
+/* PMIC */
+#define FTAG_PMIC 0x00000013
+#define FTAG_PMIC_TPS62361 0x00000001
+struct feature_tag_pmic {
+ u32 flags;
+};
+
+/* serial port */
+#define FTAG_SERIAL_PORT 0x00000020
+struct feature_tag_serial_port {
+ u32 uart_id;
+ u32 speed;
+};
+
+/* turbo bit */
+#define FTAG_TURBO 0x00000014
+struct feature_tag_turbo {
+ u32 flag;
+};
+
+/*** features ****/
+#define FTAG_HAS_GPIO_VOLUME_KEYS 0x00010001
+struct feature_tag_gpio_volume_keys {
+ u32 gpio_vol_up;
+ u32 gpio_vol_down;
+ u32 flags;
+};
+
+#define FTAG_HAS_ELECTRICAL_SHORTCUT 0x00010002
+#define FTAG_HAS_DCIN 0x00010003
+struct feature_tag_dcin {
+ u32 autodetect;
+};
+
+/* external screen support */
+#define FTAG_HAS_EXT_SCREEN 0x00010004
+
+#define EXT_SCREEN_TYPE_TVOUT 0x00000001
+#define EXT_SCREEN_TYPE_HDMI 0x00000002
+#define EXT_SCREEN_TYPE_VGA 0x00000004
+struct feature_tag_ext_screen {
+ u32 type;
+ u32 revision;
+};
+
+/* wireless lan */
+#define FTAG_HAS_WIFI 0x00010005
+
+#define WIFI_TYPE_TIWLAN 0x00000001
+struct feature_tag_wifi {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* bluetooth */
+#define FTAG_HAS_BLUETOOTH 0x00010006
+
+#define BLUETOOTH_TYPE_TIWLAN 0x00000001
+struct feature_tag_bluetooth {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* accelerometer */
+#define FTAG_HAS_ACCELEROMETER 0x00010007
+struct feature_tag_accelerometer {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* gyroscope */
+#define FTAG_HAS_GYROSCOPE 0x00010008
+
+/* compass */
+#define FTAG_HAS_COMPASS 0x00010009
+
+/* gps */
+#define FTAG_HAS_GPS 0x0001000a
+#define GPS_FLAG_DISABLED 0x00000001
+struct feature_tag_gps {
+ u32 vendor;
+ u32 product;
+ u32 revision;
+ u32 flags;
+};
+
+/* camera */
+#define FTAG_HAS_CAMERA 0x0001000b
+
+/* harddisk controller */
+#define FTAG_HAS_HARDDISK_CONTROLLER 0x0001000c
+#define HDCONTROLLER_TYPE_SATA 0x00000001
+struct feature_tag_harddisk_controller {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* harddisk */
+#define FTAG_HAS_HARDDISK 0x0001000d
+
+#define HARDDISK_TYPE_SATA 0x00000001
+#define HARDDISK_TYPE_PATA 0x00000002
+struct feature_tag_harddisk {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* touchscreen */
+#define FTAG_HAS_TOUCHSCREEN 0x0001000e
+
+#define TOUCHSCREEN_TYPE_CAPACITIVE 0x00000001
+#define TOUCHSCREEN_TYPE_RESISTIVE 0x00000002
+
+#define TOUCHSCREEN_FLAG_MULTITOUCH 0x00000001
+struct feature_tag_touchscreen {
+ u32 vendor;
+ u32 product;
+ u32 type;
+ u32 revision;
+ u32 flags;
+};
+
+/* microphone */
+#define FTAG_HAS_MICROPHONE 0x0001000f
+
+/* external SDMMC slot */
+#define FTAG_HAS_EXT_MMCSD_SLOT 0x00010010
+#define MMCSD_FLAG_CARDDETECT 0x00000001
+#define MMCSD_FLAG_CARDPREDETECT 0x00000002
+
+struct feature_tag_mmcsd {
+ u32 width;
+ u32 voltagemask;
+ u32 revision;
+ u32 flags;
+};
+
+/* ambient light sensor */
+#define FTAG_HAS_AMBIENT_LIGHT_SENSOR 0x00010011
+
+/* proximity sensor */
+#define FTAG_HAS_PROXIMITY_SENSOR 0x00010012
+
+/* gps */
+#define FTAG_HAS_GSM 0x00010013
+
+/* dect */
+#define FTAG_HAS_DECT 0x00010014
+
+/* hsdpa data modem */
+#define FTAG_HAS_HSDPA 0x00010015
+
+/* near field communication */
+#define FTAG_HAS_NFC 0x00010016
+
+#define FTAG_GPIO_KEYS 0x00010017
+struct feature_tag_gpio_keys {
+#define GPIO_KEYS_LONG_PRESS 0x00010000
+ u32 vol_up;
+ u32 vol_down;
+ u32 ok;
+ u32 reserved[5];
+};
+
+#define FTAG_SCREEN 0x00010018
+struct feature_tag_screen {
+ char vendor[16];
+ u32 type;
+ u32 revision;
+ u32 vcom;
+ u32 backlight;
+ u32 reserved[5];
+};
+
+#define FTAG_WIFI_PA 0x00010019
+struct feature_tag_wifi_pa {
+ char vendor[16];
+ u32 type;
+};
+
+/* loudspeaker */
+#define FTAG_HAS_SPEAKER 0x0001001a
+
+#define SPEAKER_FLAG_STEREO 0x00000001
+#define SPEAKER_FLAG_OWN_VOLCTRL 0x00000002
+struct feature_tag_speaker {
+ u32 flags;
+};
+
+#define FTAG_BATTERY 0x0001001b
+struct feature_tag_battery {
+ u32 type;
+};
+#define BATTERY_TYPE_HIGHRS 0x00000000
+#define BATTERY_TYPE_LOWRS 0x00000001
+
+
+#define feature_tag_next(t) \
+ ((struct feature_tag *)((u32 *)(t) + (t)->hdr.size))
+#define feature_tag_size(type) \
+ ((sizeof(struct feature_tag_header) + sizeof(struct type)) >> 2)
+#define for_each_feature_tag(t, base) \
+ for (t = base; t->hdr.size; t = feature_tag_next(t))
+
+
+struct feature_tag {
+ struct feature_tag_header hdr;
+ union {
+ struct feature_tag_core core;
+ struct feature_tag_generic generic;
+ struct feature_tag_product_name product_name;
+ struct feature_tag_product_serial product_serial;
+ struct feature_tag_product_oem product_oem;
+ struct feature_tag_product_zone product_zone;
+ struct feature_tag_product_mac_address mac_address;
+ struct feature_tag_board_revision board_revision;
+ struct feature_tag_clock clock;
+ struct feature_tag_sdram sdram;
+ struct feature_tag_pmic pmic;
+ struct feature_tag_turbo turbo;
+ struct feature_tag_serial_port serial_port;
+ struct feature_tag_gpio_volume_keys gpio_volume_keys;
+ struct feature_tag_dcin dcin;
+ struct feature_tag_ext_screen ext_screen;
+ struct feature_tag_wifi wifi;
+ struct feature_tag_bluetooth bluetooth;
+ struct feature_tag_accelerometer accelerometer;
+ struct feature_tag_harddisk_controller harddisk_controller;
+ struct feature_tag_harddisk harddisk;
+ struct feature_tag_touchscreen touchscreen;
+ struct feature_tag_gps gps;
+ struct feature_tag_speaker speaker;
+ struct feature_tag_mmcsd mmcsd;
+ struct feature_tag_gpio_keys gpio_keys;
+ struct feature_tag_screen screen;
+ struct feature_tag_wifi_pa wifi_pa;
+ struct feature_tag_battery battery;
+ } u;
+};
+
+#endif /* _FEATURE_LIST_H */
diff --git a/arch/arm/configs/archosg9_defconfig b/arch/arm/configs/archosg9_defconfig
index 2a20dd77ba..1f3d105aa0 100644
--- a/arch/arm/configs/archosg9_defconfig
+++ b/arch/arm/configs/archosg9_defconfig
@@ -11,6 +11,7 @@ CONFIG_TEXT_BASE=0xa0000000
CONFIG_MALLOC_BASE=0x90000000
CONFIG_MALLOC_SIZE=0x10000000
CONFIG_KALLSYMS=y
+CONFIG_ARM_BOARD_APPEND_ATAG=y
CONFIG_PROMPT="barebox> "
CONFIG_LONGHELP=y
CONFIG_GLOB=y
diff --git a/arch/arm/include/asm/armlinux.h b/arch/arm/include/asm/armlinux.h
index 8ec8c4df7c..07479fb15c 100644
--- a/arch/arm/include/asm/armlinux.h
+++ b/arch/arm/include/asm/armlinux.h
@@ -2,6 +2,7 @@
#define __ARCH_ARMLINUX_H
#include <asm/memory.h>
+#include <asm/setup.h>
#if defined CONFIG_ARM_LINUX
void armlinux_set_bootparams(void *params);
@@ -26,6 +27,14 @@ static inline void armlinux_set_serial(u64 serial)
}
#endif
+#if defined CONFIG_ARM_BOARD_APPEND_ATAG
+void armlinux_set_atag_appender(struct tag *(*)(struct tag *));
+#else
+static inline void armlinux_set_atag_appender(struct tag *(*func)(struct tag *))
+{
+}
+#endif
+
struct image_data;
void start_linux(void *adr, int swap, unsigned long initrd_address,
diff --git a/arch/arm/lib/armlinux.c b/arch/arm/lib/armlinux.c
index 9c134ed4b8..40a63ea7e1 100644
--- a/arch/arm/lib/armlinux.c
+++ b/arch/arm/lib/armlinux.c
@@ -106,6 +106,14 @@ u64 armlinux_get_serial(void)
#endif
}
+#ifdef CONFIG_ARM_BOARD_APPEND_ATAG
+static struct tag *(*atag_appender)(struct tag *);
+void armlinux_set_atag_appender(struct tag *(*func)(struct tag *))
+{
+ atag_appender = func;
+}
+#endif
+
static void setup_start_tag(void)
{
params = (struct tag *)armlinux_bootparams;
@@ -233,6 +241,10 @@ static void setup_tags(unsigned long initrd_address,
setup_revision_tag();
setup_serial_tag();
+#ifdef CONFIG_ARM_BOARD_APPEND_ATAG
+ if (atag_appender != NULL)
+ params = atag_appender(params);
+#endif
setup_end_tag();
printf("commandline: %s\n"
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-27 01:07:36 +0000