mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 18:09:03 +09:00
![Trevor Woerner](/assets/img/avatar_default.png)
While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances where these configuration items are conditional on SPL. This commit adds SPL variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates the configurations as required. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Trevor Woerner <trevor@toganlabs.com> [trini: Make the default depend on the setting for full U-Boot, update more zynq hardware] Signed-off-by: Tom Rini <trini@konsulko.com>
377 lines
10 KiB
C
377 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
*
|
|
* Common security related functions for OMAP devices
|
|
*
|
|
* (C) Copyright 2016-2017
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* Daniel Allred <d-allred@ti.com>
|
|
* Andreas Dannenberg <dannenberg@ti.com>
|
|
* Harinarayan Bhatta <harinarayan@ti.com>
|
|
* Andrew F. Davis <afd@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/omap_common.h>
|
|
#include <asm/omap_sec_common.h>
|
|
#include <asm/spl.h>
|
|
#include <asm/ti-common/sys_proto.h>
|
|
#include <mapmem.h>
|
|
#include <spl.h>
|
|
#include <tee/optee.h>
|
|
|
|
/* Index for signature verify ROM API */
|
|
#ifdef CONFIG_AM33XX
|
|
#define API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX (0x0000000C)
|
|
#else
|
|
#define API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX (0x0000000E)
|
|
#endif
|
|
|
|
/* Index for signature PPA-based TI HAL APIs */
|
|
#define PPA_HAL_SERVICES_START_INDEX (0x200)
|
|
#define PPA_SERV_HAL_TEE_LOAD_MASTER (PPA_HAL_SERVICES_START_INDEX + 23)
|
|
#define PPA_SERV_HAL_TEE_LOAD_SLAVE (PPA_HAL_SERVICES_START_INDEX + 24)
|
|
#define PPA_SERV_HAL_SETUP_SEC_RESVD_REGION (PPA_HAL_SERVICES_START_INDEX + 25)
|
|
#define PPA_SERV_HAL_SETUP_EMIF_FW_REGION (PPA_HAL_SERVICES_START_INDEX + 26)
|
|
#define PPA_SERV_HAL_LOCK_EMIF_FW (PPA_HAL_SERVICES_START_INDEX + 27)
|
|
|
|
/* Offset of header size if image is signed as ISW */
|
|
#define HEADER_SIZE_OFFSET (0x6D)
|
|
|
|
int tee_loaded = 0;
|
|
|
|
/* Argument for PPA_SERV_HAL_TEE_LOAD_MASTER */
|
|
struct ppa_tee_load_info {
|
|
u32 tee_sec_mem_start; /* Physical start address reserved for TEE */
|
|
u32 tee_sec_mem_size; /* Size of the memory reserved for TEE */
|
|
u32 tee_cert_start; /* Address where signed TEE binary is loaded */
|
|
u32 tee_cert_size; /* Size of TEE certificate (signed binary) */
|
|
u32 tee_jump_addr; /* Address to jump to start TEE execution */
|
|
u32 tee_arg0; /* argument to TEE jump function, in r0 */
|
|
};
|
|
|
|
static uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN) __section(".data");
|
|
|
|
u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...)
|
|
{
|
|
int i;
|
|
u32 num_args;
|
|
va_list ap;
|
|
|
|
va_start(ap, flag);
|
|
|
|
num_args = va_arg(ap, u32);
|
|
|
|
if (num_args > 4) {
|
|
va_end(ap);
|
|
return 1;
|
|
}
|
|
|
|
/* Copy args to aligned args structure */
|
|
for (i = 0; i < num_args; i++)
|
|
secure_rom_call_args[i + 1] = va_arg(ap, u32);
|
|
|
|
secure_rom_call_args[0] = num_args;
|
|
|
|
va_end(ap);
|
|
|
|
/* if data cache is enabled, flush the aligned args structure */
|
|
flush_dcache_range(
|
|
(unsigned int)&secure_rom_call_args[0],
|
|
(unsigned int)&secure_rom_call_args[0] +
|
|
roundup(sizeof(secure_rom_call_args), ARCH_DMA_MINALIGN));
|
|
|
|
return omap_smc_sec(service, proc_id, flag, secure_rom_call_args);
|
|
}
|
|
|
|
static u32 find_sig_start(char *image, size_t size)
|
|
{
|
|
char *image_end = image + size;
|
|
char *sig_start_magic = "CERT_";
|
|
int magic_str_len = strlen(sig_start_magic);
|
|
char *ch;
|
|
|
|
while (--image_end > image) {
|
|
if (*image_end == '_') {
|
|
ch = image_end - magic_str_len + 1;
|
|
if (!strncmp(ch, sig_start_magic, magic_str_len))
|
|
return (u32)ch;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int secure_boot_verify_image(void **image, size_t *size)
|
|
{
|
|
int result = 1;
|
|
u32 cert_addr, sig_addr;
|
|
size_t cert_size;
|
|
|
|
/* Perform cache writeback on input buffer */
|
|
flush_dcache_range(
|
|
rounddown((u32)*image, ARCH_DMA_MINALIGN),
|
|
roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
|
|
|
|
cert_addr = (uint32_t)*image;
|
|
sig_addr = find_sig_start((char *)*image, *size);
|
|
|
|
if (sig_addr == 0) {
|
|
printf("No signature found in image!\n");
|
|
result = 1;
|
|
goto auth_exit;
|
|
}
|
|
|
|
*size = sig_addr - cert_addr; /* Subtract out the signature size */
|
|
/* Subtract header if present */
|
|
if (strncmp((char *)sig_addr, "CERT_ISW_", 9) == 0)
|
|
*size -= ((u32 *)*image)[HEADER_SIZE_OFFSET];
|
|
cert_size = *size;
|
|
|
|
/* Check if image load address is 32-bit aligned */
|
|
if (!IS_ALIGNED(cert_addr, 4)) {
|
|
printf("Image is not 4-byte aligned!\n");
|
|
result = 1;
|
|
goto auth_exit;
|
|
}
|
|
|
|
/* Image size also should be multiple of 4 */
|
|
if (!IS_ALIGNED(cert_size, 4)) {
|
|
printf("Image size is not 4-byte aligned!\n");
|
|
result = 1;
|
|
goto auth_exit;
|
|
}
|
|
|
|
/* Call ROM HAL API to verify certificate signature */
|
|
debug("%s: load_addr = %x, size = %x, sig_addr = %x\n", __func__,
|
|
cert_addr, cert_size, sig_addr);
|
|
|
|
result = secure_rom_call(
|
|
API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX, 0, 0,
|
|
4, cert_addr, cert_size, sig_addr, 0xFFFFFFFF);
|
|
|
|
/* Perform cache writeback on output buffer */
|
|
flush_dcache_range(
|
|
rounddown((u32)*image, ARCH_DMA_MINALIGN),
|
|
roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
|
|
|
|
auth_exit:
|
|
if (result != 0) {
|
|
printf("Authentication failed!\n");
|
|
printf("Return Value = %08X\n", result);
|
|
hang();
|
|
}
|
|
|
|
/*
|
|
* Output notification of successful authentication to re-assure the
|
|
* user that the secure code is being processed as expected. However
|
|
* suppress any such log output in case of building for SPL and booting
|
|
* via YMODEM. This is done to avoid disturbing the YMODEM serial
|
|
* protocol transactions.
|
|
*/
|
|
if (!(IS_ENABLED(CONFIG_SPL_BUILD) &&
|
|
IS_ENABLED(CONFIG_SPL_YMODEM_SUPPORT) &&
|
|
spl_boot_device() == BOOT_DEVICE_UART))
|
|
printf("Authentication passed\n");
|
|
|
|
return result;
|
|
}
|
|
|
|
u32 get_sec_mem_start(void)
|
|
{
|
|
u32 sec_mem_start = CONFIG_TI_SECURE_EMIF_REGION_START;
|
|
u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE;
|
|
/*
|
|
* Total reserved region is all contiguous with protected
|
|
* region coming first, followed by the non-secure region.
|
|
* If 0x0 start address is given, we simply put the reserved
|
|
* region at the end of the external DRAM.
|
|
*/
|
|
if (sec_mem_start == 0)
|
|
sec_mem_start =
|
|
(CONFIG_SYS_SDRAM_BASE + (
|
|
#if defined(CONFIG_OMAP54XX)
|
|
omap_sdram_size()
|
|
#else
|
|
get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
|
|
CONFIG_MAX_RAM_BANK_SIZE)
|
|
#endif
|
|
- sec_mem_size));
|
|
return sec_mem_start;
|
|
}
|
|
|
|
int secure_emif_firewall_setup(uint8_t region_num, uint32_t start_addr,
|
|
uint32_t size, uint32_t access_perm,
|
|
uint32_t initiator_perm)
|
|
{
|
|
int result = 1;
|
|
|
|
/*
|
|
* Call PPA HAL API to do any other general firewall
|
|
* configuration for regions 1-6 of the EMIF firewall.
|
|
*/
|
|
debug("%s: regionNum = %x, startAddr = %x, size = %x", __func__,
|
|
region_num, start_addr, size);
|
|
|
|
result = secure_rom_call(
|
|
PPA_SERV_HAL_SETUP_EMIF_FW_REGION, 0, 0, 4,
|
|
(start_addr & 0xFFFFFFF0) | (region_num & 0x0F),
|
|
size, access_perm, initiator_perm);
|
|
|
|
if (result != 0) {
|
|
puts("Secure EMIF Firewall Setup failed!\n");
|
|
debug("Return Value = %x\n", result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE < \
|
|
CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE)
|
|
#error "TI Secure EMIF: Protected size cannot be larger than total size."
|
|
#endif
|
|
int secure_emif_reserve(void)
|
|
{
|
|
int result = 1;
|
|
u32 sec_mem_start = get_sec_mem_start();
|
|
u32 sec_prot_size = CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE;
|
|
|
|
/* If there is no protected region, there is no reservation to make */
|
|
if (sec_prot_size == 0)
|
|
return 0;
|
|
|
|
/*
|
|
* Call PPA HAL API to reserve a chunk of EMIF SDRAM
|
|
* for secure world use. This region should be carved out
|
|
* from use by any public code. EMIF firewall region 7
|
|
* will be used to protect this block of memory.
|
|
*/
|
|
result = secure_rom_call(
|
|
PPA_SERV_HAL_SETUP_SEC_RESVD_REGION,
|
|
0, 0, 2, sec_mem_start, sec_prot_size);
|
|
|
|
if (result != 0) {
|
|
puts("SDRAM Firewall: Secure memory reservation failed!\n");
|
|
debug("Return Value = %x\n", result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int secure_emif_firewall_lock(void)
|
|
{
|
|
int result = 1;
|
|
|
|
/*
|
|
* Call PPA HAL API to lock the EMIF firewall configurations.
|
|
* After this API is called, none of the PPA HAL APIs for
|
|
* configuring the EMIF firewalls will be usable again (that
|
|
* is, calls to those APIs will return failure and have no
|
|
* effect).
|
|
*/
|
|
|
|
result = secure_rom_call(
|
|
PPA_SERV_HAL_LOCK_EMIF_FW,
|
|
0, 0, 0);
|
|
|
|
if (result != 0) {
|
|
puts("Secure EMIF Firewall Lock failed!\n");
|
|
debug("Return Value = %x\n", result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static struct ppa_tee_load_info tee_info __aligned(ARCH_DMA_MINALIGN);
|
|
|
|
int secure_tee_install(u32 addr)
|
|
{
|
|
struct optee_header *hdr;
|
|
void *loadptr;
|
|
u32 tee_file_size;
|
|
u32 sec_mem_start = get_sec_mem_start();
|
|
const u32 size = CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE;
|
|
u32 ret;
|
|
|
|
/* If there is no protected region, there is no place to put the TEE */
|
|
if (size == 0) {
|
|
printf("Error loading TEE, no protected memory region available\n");
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
hdr = (struct optee_header *)map_sysmem(addr, sizeof(struct optee_header));
|
|
/* 280 bytes = size of signature */
|
|
tee_file_size = hdr->init_size + hdr->paged_size +
|
|
sizeof(struct optee_header) + 280;
|
|
|
|
if ((hdr->magic != OPTEE_MAGIC) ||
|
|
(hdr->version != OPTEE_VERSION) ||
|
|
(tee_file_size > size)) {
|
|
printf("Error in TEE header. Check firewall and TEE sizes\n");
|
|
unmap_sysmem(hdr);
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
tee_info.tee_sec_mem_start = sec_mem_start;
|
|
tee_info.tee_sec_mem_size = size;
|
|
tee_info.tee_jump_addr = hdr->init_load_addr_lo;
|
|
tee_info.tee_cert_start = addr;
|
|
tee_info.tee_cert_size = tee_file_size;
|
|
tee_info.tee_arg0 = hdr->init_size + tee_info.tee_jump_addr;
|
|
unmap_sysmem(hdr);
|
|
loadptr = map_sysmem(addr, tee_file_size);
|
|
|
|
debug("tee_info.tee_sec_mem_start= %08X\n", tee_info.tee_sec_mem_start);
|
|
debug("tee_info.tee_sec_mem_size = %08X\n", tee_info.tee_sec_mem_size);
|
|
debug("tee_info.tee_jump_addr = %08X\n", tee_info.tee_jump_addr);
|
|
debug("tee_info.tee_cert_start = %08X\n", tee_info.tee_cert_start);
|
|
debug("tee_info.tee_cert_size = %08X\n", tee_info.tee_cert_size);
|
|
debug("tee_info.tee_arg0 = %08X\n", tee_info.tee_arg0);
|
|
debug("tee_file_size = %d\n", tee_file_size);
|
|
|
|
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
|
|
flush_dcache_range(
|
|
rounddown((u32)loadptr, ARCH_DMA_MINALIGN),
|
|
roundup((u32)loadptr + tee_file_size, ARCH_DMA_MINALIGN));
|
|
|
|
flush_dcache_range((u32)&tee_info, (u32)&tee_info +
|
|
roundup(sizeof(tee_info), ARCH_DMA_MINALIGN));
|
|
#endif
|
|
unmap_sysmem(loadptr);
|
|
|
|
ret = secure_rom_call(PPA_SERV_HAL_TEE_LOAD_MASTER, 0, 0, 1, &tee_info);
|
|
if (ret) {
|
|
printf("TEE_LOAD_MASTER Failed\n");
|
|
return ret;
|
|
}
|
|
printf("TEE_LOAD_MASTER Done\n");
|
|
|
|
#if defined(CONFIG_OMAP54XX)
|
|
if (!is_dra72x()) {
|
|
u32 *smc_cpu1_params;
|
|
/* Reuse the tee_info buffer for SMC params */
|
|
smc_cpu1_params = (u32 *)&tee_info;
|
|
smc_cpu1_params[0] = 0;
|
|
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
|
|
flush_dcache_range((u32)smc_cpu1_params, (u32)smc_cpu1_params +
|
|
roundup(sizeof(u32), ARCH_DMA_MINALIGN));
|
|
#endif
|
|
ret = omap_smc_sec_cpu1(PPA_SERV_HAL_TEE_LOAD_SLAVE, 0, 0,
|
|
smc_cpu1_params);
|
|
if (ret) {
|
|
printf("TEE_LOAD_SLAVE Failed\n");
|
|
return ret;
|
|
}
|
|
printf("TEE_LOAD_SLAVE Done\n");
|
|
}
|
|
#endif
|
|
|
|
tee_loaded = 1;
|
|
|
|
return 0;
|
|
}
|