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/*
* Copyright (c) 2009, Google Inc.
* All rights reserved.
*
* Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <reg.h>
#include <debug.h>
#include <lib/ptable.h>
#include <dev/flash.h>
#include <dev/pm8921.h>
#include <dev/ssbi.h>
#include <string.h>
#include <smem.h>
#include <gsbi.h>
#include <platform/iomap.h>
#include <platform.h>
#define MDM9X15_CDP 3675
#define MDM9X15_MTP 3681
#define LINUX_MACHTYPE MDM9X15_CDP
#define RECOVERY_MODE 0x77665502
#define FOTA_COOKIE 0x64645343
#define FOTA_PARTITION 5
#define DSP3_PARTITION 5
static struct ptable flash_ptable;
unsigned hw_platform = 0;
unsigned target_msm_id = 0;
/* Partition names for fastboot flash */
static char *apps_ptn_names[] = { "aboot", "boot", "cache", "misc", "recovery", "fota",
"recoveryfs", "system", "userdata" };
/* Partitions should be in this order */
static char *ptable_ptn_names[] = { "APPSBL", "APPS", "CACHE", "MISC", "RECOVERY",
"FOTA", "RECOVERYFS", "SYSTEM", "USERDATA" };
static unsigned ptn_name_count = 9;
/* Apps partition flags to detect the presence of FOTA partitions.
* Initially, assume that the FOTA partitions are absent.
*/
static unsigned int apps_ptn_flag[] = {1, 1, 0, 0, 0, 0, 0, 1, 1};
/* Modem partition flags to detect the presence of DSP3 partitions.
* Initially, assume that the DSP3 partition is absent.
* The order of modem partiotions -
* "mibib", "sbl2", "rpm", "efs2", "dsp1", "dsp3", "dsp2"
*/
static unsigned int modem_ptn_flag[] = {1, 1, 1, 1, 1, 0, 1};
static unsigned modem_ptn_count = 7;
static const uint8_t uart_gsbi_id = GSBI_ID_4;
static pm8921_dev_t pmic;
void smem_ptable_init(void);
extern void reboot(unsigned reboot_reason);
void update_ptable_apps_partitions(void);
void update_ptable_modem_partitions(void);
void update_ptable_reorder(void);
extern int fake_key_get_state(void);
void target_init(void)
{
struct flash_info *flash_info;
dprintf(INFO, "target_init()\n");
/* Initialize PMIC driver */
pmic.read = (pm8921_read_func) & pa1_ssbi2_read_bytes;
pmic.write = (pm8921_write_func) & pa1_ssbi2_write_bytes;
pm8921_init(&pmic);
ptable_init(&flash_ptable);
smem_ptable_init();
flash_init();
flash_info = flash_get_info();
ASSERT(flash_info);
smem_add_modem_partitions(&flash_ptable);
/* Update the naming for apps partitions and type */
update_ptable_apps_partitions();
/* Update modem partitions to lower case for fastboot */
update_ptable_modem_partitions();
ptable_dump(&flash_ptable);
/* Reorder the partition table */
update_ptable_reorder();
flash_set_ptable( &flash_ptable);
}
static int read_from_flash(struct ptentry* ptn, int offset, int size, void *dest)
{
void *buffer = NULL;
unsigned page_size = flash_page_size();
unsigned page_mask = page_size - 1;
int read_size = (size + page_mask) & (~page_mask);
buffer = malloc(read_size);
if(!buffer){
dprintf(CRITICAL, "ERROR : Malloc failed for read_from_flash \n");
return -1;
}
if(flash_read(ptn, offset, buffer, read_size)){
dprintf(CRITICAL, "ERROR : Flash read failed \n");
return -1;
}
memcpy(dest, buffer, size);
free(buffer);
return 0;
}
static unsigned int get_fota_cookie(void)
{
struct ptentry *ptn;
struct ptable *ptable;
unsigned int cookie = 0;
ptable = flash_get_ptable();
if (ptable == NULL) {
dprintf(CRITICAL, "ERROR: Partition table not found\n");
return 0;
}
ptn = ptable_find(ptable, "fota");
if (ptn == NULL) {
dprintf(CRITICAL, "ERROR: No fota partition found\n");
return 0;
}
if(read_from_flash(ptn, 0, sizeof(unsigned int), &cookie) == -1){
dprintf(CRITICAL,"ERROR: failed to read fota cookie from flash");
return 0;
}
return cookie;
}
unsigned check_reboot_mode(void)
{
unsigned restart_reason = 0;
unsigned int cookie = 0;
/* Read reboot reason and scrub it */
restart_reason = readl(RESTART_REASON_ADDR);
writel(0x00, RESTART_REASON_ADDR);
/* SMEM value is not relied upon on power shutdown.
* Check either of SMEM or FOTA update cookie is set.
* Check fota cookie only when fota partition is available on target
*/
if (apps_ptn_flag[FOTA_PARTITION] == 1) {
cookie = get_fota_cookie();
if (cookie == FOTA_COOKIE)
return RECOVERY_MODE;
}
return restart_reason;
}
void board_info(void)
{
struct smem_board_info_v4 board_info_v4;
struct smem_board_info_v7 board_info_v7;
unsigned int board_info_len = 0;
unsigned smem_status;
unsigned format = 0;
unsigned id = 0;
if (hw_platform && target_msm_id)
return;
hw_platform = MDM9X15_CDP;
target_msm_id = MDM9600;
smem_status = smem_read_alloc_entry_offset(SMEM_BOARD_INFO_LOCATION,
&format, sizeof(format), 0);
if (!smem_status) {
if (format == 4) {
board_info_len = sizeof(board_info_v4);
smem_status =
smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
&board_info_v4,
board_info_len);
if (!smem_status) {
id = board_info_v4.board_info_v3.hw_platform;
target_msm_id =
board_info_v4.board_info_v3.msm_id;
}
} else if (format == 7) {
board_info_len = sizeof(board_info_v7);
smem_status =
smem_read_alloc_entry(SMEM_BOARD_INFO_LOCATION,
&board_info_v7,
board_info_len);
if (!smem_status) {
id = board_info_v7.board_info_v3.hw_platform;
target_msm_id =
board_info_v7.board_info_v3.msm_id;
}
} else
ASSERT(0);
}
return;
}
unsigned board_machtype(void)
{
board_info();
return hw_platform;
}
void reboot_device(unsigned reboot_reason)
{
/* Write reboot reason */
writel(reboot_reason, RESTART_REASON_ADDR);
/* Actually reset the chip */
pm8921_config_reset_pwr_off(1);
writel(0, MSM_PSHOLD_CTL_SU);
mdelay(10000);
dprintf(CRITICAL, "Rebooting failed\n");
return;
}
uint8_t target_uart_gsbi(void)
{
return uart_gsbi_id;
}
/*
* Return 1 to trigger to fastboot
*/
int fastboot_trigger(void)
{
int ret;
ret = fake_key_get_state();
/* Want to trigger when dip switch is on */
return (ret);
}
void update_ptable_modem_partitions(void)
{
uint32_t ptn_index, i = 0;
uint32_t name_size;
struct ptentry *ptentry_ptr = flash_ptable.parts;
struct ptentry *dsp3_ptn;
dsp3_ptn = ptable_find(&flash_ptable, "DSP3");
/* Check for DSP3 partition and its size */
if (dsp3_ptn != NULL)
if (dsp3_ptn->length > 0)
modem_ptn_flag[DSP3_PARTITION] = 1;
for (ptn_index = 0; ptn_index < modem_ptn_count; ptn_index++)
{
if (!modem_ptn_flag[ptn_index])
continue;
name_size = strlen(ptentry_ptr[ptn_index].name);
for (i = 0; i < name_size; i++)
{
ptentry_ptr[ptn_index].name[i] =
tolower(ptentry_ptr[ptn_index].name[i]);
}
ptentry_ptr[ptn_index].type = TYPE_APPS_PARTITION;
}
}
void update_ptable_apps_partitions(void)
{
uint32_t ptn_index, name_index = 0;
uint32_t end = 0xffffffff;
uint32_t name_size = strlen(ptable_ptn_names[name_index]);
struct ptentry *ptentry_ptr = flash_ptable.parts;
struct ptentry *fota_ptn;
unsigned int size;
fota_ptn = ptable_find(&flash_ptable, "FOTA");
/* Check for FOTA partitions and their size */
if (fota_ptn != NULL) {
if (fota_ptn->length > 0) {
/* FOTA partitions are present */
apps_ptn_flag[2] = 1;
apps_ptn_flag[3] = 1;
apps_ptn_flag[4] = 1;
apps_ptn_flag[5] = 1;
apps_ptn_flag[6] = 1;
}
}
for (ptn_index = 0; ptentry_ptr[ptn_index].start != end; ptn_index++) {
if (!(strncmp(ptentry_ptr[ptn_index].name,
ptable_ptn_names[name_index], name_size))) {
name_size = strlen(apps_ptn_names[name_index]);
name_size++; /* For null termination */
/* Update the partition names to something familiar */
if (name_size <= MAX_PTENTRY_NAME)
strncpy(ptentry_ptr[ptn_index].name,
apps_ptn_names[name_index], name_size);
/* Aboot uses modem page layout, leave aboot ptn */
if (name_index != 0)
ptentry_ptr[ptn_index].type =
TYPE_APPS_PARTITION;
/* Check for valid partitions
* according to the apps_ptn_flag
*/
do {
/* Don't go out of bounds */
name_index++;
if (name_index >= ptn_name_count)
goto ptn_name_update_done;
name_size =
strlen(ptable_ptn_names[name_index]);
} while (!apps_ptn_flag[name_index]);
}
}
ptn_name_update_done:
/* Update the end to be actual end for grow partition */
ptn_index--;
for (; ptentry_ptr[ptn_index].length != end; ptn_index++) {
};
/* If SMEM ptable is updated already then don't manually update this */
if (ptentry_ptr[ptn_index].start != end)
ptentry_ptr[ptn_index].length =
((struct flash_info *)flash_get_info())->num_blocks -
ptentry_ptr[ptn_index].start;
}
void update_ptable_reorder(void)
{
int boot_index;
struct ptentry boot_ptn;
boot_index = ptable_get_index(&flash_ptable, "boot");
if(boot_index == -1) {
dprintf (CRITICAL, "ERROR: Boot Partition not found. \n");
return;
}
boot_ptn = flash_ptable.parts[boot_index] ;
flash_ptable.parts[boot_index] = flash_ptable.parts[0];
flash_ptable.parts[0] = boot_ptn;
}