mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
983e37007d
This moves what was in arch/arm/cpu/armv7/omap-common in to
arch/arm/mach-omap2 and moves
arch/arm/cpu/armv7/{am33xx,omap3,omap4,omap5} in to arch/arm/mach-omap2
as subdirectories. All refernces to the former locations are updated to
the current locations. For the logic to decide what our outputs are,
consolidate the tests into a single config.mk rather than including 4.
Signed-off-by: Tom Rini <trini@konsulko.com>
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/*
|
|
*
|
|
* Security related functions for OMAP5 class devices
|
|
*
|
|
* (C) Copyright 2016
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* Daniel Allred <d-allred@ti.com>
|
|
* Harinarayan Bhatta <harinarayan@ti.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <asm/omap_common.h>
|
|
#include <asm/omap_sec_common.h>
|
|
#include <asm/spl.h>
|
|
#include <spl.h>
|
|
|
|
/* Index for signature PPA-based TI HAL APIs */
|
|
#define PPA_HAL_SERVICES_START_INDEX (0x200)
|
|
#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)
|
|
|
|
static 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 +
|
|
(omap_sdram_size() - 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;
|
|
}
|