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/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Mikael Larsson <mikael.xt.larsson@stericsson.com> for ST-Ericsson.
*
* License terms: GNU General Public License (GPL), version 2.
*/
#include <common.h>
#include <malloc.h>
#include <part.h>
#include <mmc.h>
#include <asm/arch/ab8500.h>
#include "itp.h"
#include "cspsa_fp.h"
#define SEC_ROM_FORCE_CLEAN_MASK 0x0020
#define SEC_ROM_RET_OK 0x01
#define ISSWAPI_SECURE_LOAD 0x10000002
#define ISSWAPI_FLUSH_BOOT_CODE 0x11000003
#define IPL_ITEM_ID 0x02
typedef u32 (*boot_rom_bridge_func_t)(const u32 , const u32, const va_list);
static boot_rom_bridge_func_t hw_sec_rom_pub_bridge;
struct sec_rom_cut_desc {
u32 cutid_addr;
u32 cutid;
u32 bridge_func;
};
static const struct sec_rom_cut_desc cuttable[] = {
{ 0x9001FFF4, 0x008500A0, 0x90018300 },
{ 0x9001FFF4, 0x008500A1, 0x90018300 },
{ 0x9001FFF4, 0x005500A0, 0x90018300 },
{ 0x9001DBF4, 0x008500B0, 0x90017300 },
};
static u32 itp_call_secure_service(const u32 serviceid,
const u32 secureconfig,
...)
{
va_list ap;
u32 returnvalue;
va_start(ap, secureconfig);
returnvalue = hw_sec_rom_pub_bridge(serviceid,
secureconfig,
ap);
va_end(ap);
return returnvalue;
}
static int itp_init_bridge(void)
{
u8 cutnb = 0;
hw_sec_rom_pub_bridge = NULL;
while ((cutnb < ARRAY_SIZE(cuttable)) &&
(cuttable[cutnb].cutid != *(u32 *)(cuttable[cutnb].cutid_addr)))
cutnb++;
if (cutnb < ARRAY_SIZE(cuttable)) {
hw_sec_rom_pub_bridge =
(boot_rom_bridge_func_t)cuttable[cutnb].bridge_func;
return 0;
}
printf("itp_init_bridge: cutid not found\n");
return 1;
}
static int itp_flush_issw(void)
{
u32 ret;
ret = itp_call_secure_service(ISSWAPI_FLUSH_BOOT_CODE,
SEC_ROM_FORCE_CLEAN_MASK,
0,
0);
if (ret != SEC_ROM_RET_OK) {
printf("itp_flush_issw: ISSWAPI_FLUSH_BOOT_CODE failed: %d\n",
ret);
return 1;
}
return 0;
}
static int itp_load_ipl(block_dev_desc_t *block_dev)
{
u32 offset;
u32 size;
u32 loadaddr;
u32 returnvalue;
int ab8500_cutid;
debug("loadipl\n");
/* Check if IPL partition is present */
if (get_entry_info_toc(block_dev, ITP_TOC_IPL_NAME, &offset,
&size, &loadaddr)) {
printf("itp_load_ipl: get_entry_info_toc failed\n");
return 1;
}
/* Get CutID */
ab8500_cutid = ab8500_read(AB8500_MISC, AB8500_REV_REG);
returnvalue = itp_call_secure_service((u32)ISSWAPI_SECURE_LOAD,
SEC_ROM_FORCE_CLEAN_MASK,
IPL_ITEM_ID,
ab8500_cutid);
if (returnvalue != SEC_ROM_RET_OK) {
printf("itp_load_ipl: ISSWAPI_SECURE_LOAD failed: %d\n",
returnvalue);
return 1;
}
return 0;
}
static int itp_load_toc_entry(block_dev_desc_t *block_dev,
const char *partname,
u32 *loadaddress)
{
u32 n;
u32 offset;
u32 size;
debug("itp_load_toc_entry: Loading %s\n", partname);
if (get_entry_info_toc(block_dev, partname, &offset,
&size, loadaddress)) {
printf("itp_load_toc_entry: get_entry_info_toc failed\n");
return 1;
}
size = (size / block_dev->blksz) +
((size % block_dev->blksz) ? 1 : 0);
n = block_dev->block_read(block_dev->dev,
offset / block_dev->blksz,
size,
loadaddress);
if (n != size) {
printf("itp_load_toc_entry: Failed to load %s!\n", partname);
return 1;
}
return 0;
}
/*
* itp_load_itp_and_modem - Loads itp and modem depending on config.
* If itp is loaded ok it will be executed and u-boot execution will stop
*/
int itp_load_itp_and_modem(block_dev_desc_t *block_dev)
{
int retval = 0;
u32 cspsa_key;
void (*loadaddress)(void) = NULL;
debug("\nitp_load_itp_and_modem\n");
if (itp_init_bridge()) {
retval = 1;
goto exit;
}
if (cspsa_fp_read(block_dev,
ITP_CSPSA_KEY,
&cspsa_key)) {
printf("itp_load_itp_and_modem: cspsa_fp_read failed\n");
retval = 1;
goto exit;
}
if (cspsa_key & ITP_LOAD_MODEM) {
if (itp_load_toc_entry(block_dev,
ITP_TOC_MODEM_NAME,
(u32 *)loadaddress)) {
retval = 1;
goto exit;
}
if (itp_load_ipl(block_dev)) {
retval = 1;
goto exit;
}
}
if (cspsa_key & ITP_LOAD_ITP) {
if (itp_load_toc_entry(block_dev,
ITP_TOC_ITP_NAME,
(u32 *)loadaddress)) {
retval = 1;
goto exit;
}
}
exit:
/* Always Flush */
if (hw_sec_rom_pub_bridge != NULL)
itp_flush_issw();
if ((cspsa_key & ITP_LOAD_ITP) && !retval)
loadaddress(); /* U-boot execution will end here*/
/* Return on error */
return retval;
}
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