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rename common_area typedef and global

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This commit is contained in:
Philippe Teuwen 2021-08-21 23:23:54 +02:00
parent bc76c7263e
commit d56d8f0f65
5 changed files with 38 additions and 38 deletions
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10
armsrc/appmain.c
View file

@ -71,7 +71,7 @@ int g_dbglevel = DBG_ERROR;
uint8_t g_trigger = 0;
bool g_hf_field_active = false;
extern uint32_t _stack_start[], _stack_end[];
struct common_area common_area __attribute__((section(".commonarea")));
common_area_t g_common_area __attribute__((section(".commonarea")));
static int button_status = BUTTON_NO_CLICK;
static bool allow_send_wtx = false;
uint16_t g_tearoff_delay_us = 0;
@ -303,7 +303,7 @@ static void SendVersion(void) {
#ifndef WITH_NO_COMPRESSION
// Send Chip ID and used flash memory
uint32_t text_and_rodata_section_size = (uint32_t)__data_src_start__ - (uint32_t)_flash_start;
uint32_t compressed_data_section_size = common_area.arg1;
uint32_t compressed_data_section_size = g_common_area.arg1;
#endif
struct p {
@ -2413,8 +2413,8 @@ static void PacketReceived(PacketCommandNG *packet) {
break;
}
case CMD_START_FLASH: {
if (common_area.flags.bootrom_present) {
common_area.command = COMMON_AREA_COMMAND_ENTER_FLASH_MODE;
if (g_common_area.flags.bootrom_present) {
g_common_area.command = COMMON_AREA_COMMAND_ENTER_FLASH_MODE;
}
usb_disable();
AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
@ -2424,7 +2424,7 @@ static void PacketReceived(PacketCommandNG *packet) {
}
case CMD_DEVICE_INFO: {
uint32_t dev_info = DEVICE_INFO_FLAG_OSIMAGE_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_OS;
if (common_area.flags.bootrom_present) {
if (g_common_area.flags.bootrom_present) {
dev_info |= DEVICE_INFO_FLAG_BOOTROM_PRESENT;
}
reply_old(CMD_DEVICE_INFO, dev_info, 0, 0, 0, 0);

14
armsrc/start.c
View file

@ -20,7 +20,7 @@
#include "BigBuf.h"
#include "string.h"
extern struct common_area common_area;
extern common_area_t g_common_area;
extern uint32_t __data_src_start__[], __data_start__[], __data_end__[], __bss_start__[], __bss_end__[];
#ifndef WITH_NO_COMPRESSION
@ -35,7 +35,7 @@ static void uncompress_data_section(void) {
if (res < 0)
return;
// save the size of the compressed data section
common_area.arg1 = avail_in;
g_common_area.arg1 = avail_in;
}
#endif
@ -43,13 +43,13 @@ void __attribute__((section(".startos"))) Vector(void);
void Vector(void) {
/* Stack should have been set up by the bootloader */
if (common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
if (g_common_area.magic != COMMON_AREA_MAGIC || g_common_area.version != 1) {
/* Initialize common area */
memset(&common_area, 0, sizeof(common_area));
common_area.magic = COMMON_AREA_MAGIC;
common_area.version = 1;
memset(&g_common_area, 0, sizeof(g_common_area));
g_common_area.magic = COMMON_AREA_MAGIC;
g_common_area.version = 1;
}
common_area.flags.osimage_present = 1;
g_common_area.flags.osimage_present = 1;
/* Set up data segment: Copy from flash to ram */
#ifdef WITH_NO_COMPRESSION

44
bootrom/bootrom.c
View file

@ -12,7 +12,7 @@
#include "proxmark3_arm.h"
#define DEBUG 0
struct common_area common_area __attribute__((section(".commonarea")));
common_area_t g_common_area __attribute__((section(".commonarea")));
uint32_t start_addr, end_addr;
bool bootrom_unlocked;
extern uint32_t _bootrom_start[], _bootrom_end[], _flash_start[], _flash_end[], _osimage_entry[];
@ -90,7 +90,7 @@ static void UsbPacketReceived(uint8_t *packet) {
DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH |
DEVICE_INFO_FLAG_UNDERSTANDS_CHIP_INFO |
DEVICE_INFO_FLAG_UNDERSTANDS_VERSION;
if (common_area.flags.osimage_present)
if (g_common_area.flags.osimage_present)
arg0 |= DEVICE_INFO_FLAG_OSIMAGE_PRESENT;
reply_old(CMD_DEVICE_INFO, arg0, 1, 2, 0, 0);
@ -196,9 +196,9 @@ static void flash_mode(void) {
end_addr = 0;
bootrom_unlocked = false;
uint8_t rx[sizeof(PacketCommandOLD)];
common_area.command = COMMON_AREA_COMMAND_NONE;
if (!common_area.flags.button_pressed && BUTTON_PRESS())
common_area.flags.button_pressed = 1;
g_common_area.command = COMMON_AREA_COMMAND_NONE;
if (!g_common_area.flags.button_pressed && BUTTON_PRESS())
g_common_area.flags.button_pressed = 1;
usb_enable();
@ -215,12 +215,12 @@ static void flash_mode(void) {
}
}
if (common_area.flags.button_pressed && !BUTTON_PRESS()) {
common_area.flags.button_pressed = 0;
if (g_common_area.flags.button_pressed && !BUTTON_PRESS()) {
g_common_area.flags.button_pressed = 0;
}
if (!common_area.flags.button_pressed && BUTTON_PRESS()) {
if (!g_common_area.flags.button_pressed && BUTTON_PRESS()) {
/* Perform a reset to leave flash mode */
common_area.flags.button_pressed = 1;
g_common_area.flags.button_pressed = 1;
usb_disable();
LED_B_ON();
AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
@ -292,38 +292,38 @@ void BootROM(void) {
LED_A_ON();
int common_area_present = 0;
int g_common_area_present = 0;
switch (AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_RSTTYP) {
case AT91C_RSTC_RSTTYP_WATCHDOG:
case AT91C_RSTC_RSTTYP_SOFTWARE:
case AT91C_RSTC_RSTTYP_USER:
/* In these cases the common_area in RAM should be ok, retain it if it's there */
if (common_area.magic == COMMON_AREA_MAGIC && common_area.version == 1)
common_area_present = 1;
/* In these cases the g_common_area in RAM should be ok, retain it if it's there */
if (g_common_area.magic == COMMON_AREA_MAGIC && g_common_area.version == 1)
g_common_area_present = 1;
break;
default: /* Otherwise, initialize it from scratch */
break;
}
if (!common_area_present) {
if (!g_common_area_present) {
/* Common area not ok, initialize it */
size_t i;
/* Makeshift memset, no need to drag util.c into this */
for (i = 0; i < sizeof(common_area); i++)
((char *)&common_area)[i] = 0;
for (i = 0; i < sizeof(g_common_area); i++)
((char *)&g_common_area)[i] = 0;
common_area.magic = COMMON_AREA_MAGIC;
common_area.version = 1;
g_common_area.magic = COMMON_AREA_MAGIC;
g_common_area.version = 1;
}
common_area.flags.bootrom_present = 1;
g_common_area.flags.bootrom_present = 1;
if ((common_area.command == COMMON_AREA_COMMAND_ENTER_FLASH_MODE) ||
(!common_area.flags.button_pressed && BUTTON_PRESS()) ||
if ((g_common_area.command == COMMON_AREA_COMMAND_ENTER_FLASH_MODE) ||
(!g_common_area.flags.button_pressed && BUTTON_PRESS()) ||
(*_osimage_entry == 0xffffffffU)) {
flash_mode();
} else {
// clear button status, even if button still pressed
common_area.flags.button_pressed = 0;
g_common_area.flags.button_pressed = 0;
// jump to Flash address of the osimage entry point (LSBit set for thumb mode)
__asm("bx %0\n" : : "r"(((uint32_t)_osimage_entry) | 0x1));
}

4
include/pm3_cmd.h
View file

@ -886,10 +886,10 @@ typedef struct {
// CMD_DEVICE_INFO response packet has flags in arg[0], flag definitions:
/* Whether a bootloader that understands the common_area is present */
/* Whether a bootloader that understands the g_common_area is present */
#define DEVICE_INFO_FLAG_BOOTROM_PRESENT (1<<0)
/* Whether a osimage that understands the common_area is present */
/* Whether a osimage that understands the g_common_area is present */
#define DEVICE_INFO_FLAG_OSIMAGE_PRESENT (1<<1)
/* Set if the bootloader is currently executing */

4
include/proxmark3_arm.h
View file

@ -120,7 +120,7 @@
#define COMMON_AREA_MAGIC 0x43334d50 // "PM3C"
#define COMMON_AREA_COMMAND_NONE 0
#define COMMON_AREA_COMMAND_ENTER_FLASH_MODE 1
struct common_area {
typedef struct {
int magic; /* Magic sequence, to distinguish against random uninitialized memory */
char version; /* Must be 1 */
char command;
@ -130,6 +130,6 @@ struct common_area {
unsigned int button_pressed: 1;
} PACKED flags;
int arg1, arg2;
} PACKED;
} PACKED common_area_t;
#endif