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/*
* Copyright (c) 2020 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <soc/hw_init.h>
#include <soc/pmc.h>
#include <soc/t210.h>
#include <utils/util.h>
void pmc_scratch_lock(pmc_sec_lock_t lock_mask)
{
// Lock Private key disable, Fuse write enable, MC carveout, Warmboot PA id and Warmboot address.
if (lock_mask & PMC_SEC_LOCK_MISC)
{
PMC(APBDEV_PMC_SEC_DISABLE) |= 0x700FF0; // RW lock: 0-3.
PMC(APBDEV_PMC_SEC_DISABLE2) |= 0xFC000000; // RW lock: 21-23.
PMC(APBDEV_PMC_SEC_DISABLE3) |= 0x3F0FFF00; // RW lock: 28-33, 36-38.
PMC(APBDEV_PMC_SEC_DISABLE6) |= 0xC000000; // RW lock: 85.
PMC(APBDEV_PMC_SEC_DISABLE8) |= 0xFF00FF00; // RW lock: 108-111, 116-119.
// SE2 context.
if (hw_get_chip_id() == GP_HIDREV_MAJOR_T210B01)
{
PMC(APBDEV_PMC_SEC_DISABLE9) |= 0x3FF; // RW lock: 120-124. (0xB38)
PMC(APBDEV_PMC_SEC_DISABLE10) = 0xFFFFFFFF; // RW lock: 135-150.
}
}
if (lock_mask & PMC_SEC_LOCK_LP0_PARAMS)
{
PMC(APBDEV_PMC_SEC_DISABLE2) |= 0x3FCFFFF; // RW lock: 8-15, 17-20.
PMC(APBDEV_PMC_SEC_DISABLE4) |= 0x3F3FFFFF; // RW lock: 40-50, 52-54.
PMC(APBDEV_PMC_SEC_DISABLE5) = 0xFFFFFFFF; // RW lock: 56-71.
PMC(APBDEV_PMC_SEC_DISABLE6) |= 0xF3FFC00F; // RW lock: 72-73, 79-84, 86-87.
PMC(APBDEV_PMC_SEC_DISABLE7) |= 0x3FFFFF; // RW lock: 88-98.
PMC(APBDEV_PMC_SEC_DISABLE8) |= 0xFF; // RW lock: 104-107.
}
if (lock_mask & PMC_SEC_LOCK_RST_VECTOR)
PMC(APBDEV_PMC_SEC_DISABLE3) |= 0xF00000; // RW lock: 34-35.
if (lock_mask & PMC_SEC_LOCK_CARVEOUTS)
{
PMC(APBDEV_PMC_SEC_DISABLE2) |= 0x30000; // RW lock: 16.
PMC(APBDEV_PMC_SEC_DISABLE3) |= 0xC0000000; // RW lock: 39.
PMC(APBDEV_PMC_SEC_DISABLE4) |= 0xC0C00000; // RW lock: 51, 55.
PMC(APBDEV_PMC_SEC_DISABLE6) |= 0x3FF0; // RW lock: 74-78.
PMC(APBDEV_PMC_SEC_DISABLE7) |= 0xFFC00000; // RW lock: 99-103.
}
if (lock_mask & PMC_SEC_LOCK_TZ_CMAC_W)
PMC(APBDEV_PMC_SEC_DISABLE8) |= 0x550000; // W lock: 112-115.
if (lock_mask & PMC_SEC_LOCK_TZ_CMAC_R)
PMC(APBDEV_PMC_SEC_DISABLE8) |= 0xAA0000; // R lock: 112-115.
if (lock_mask & PMC_SEC_LOCK_TZ_KEK_W)
PMC(APBDEV_PMC_SEC_DISABLE3) |= 0x55; // W lock: 24-27.
if (lock_mask & PMC_SEC_LOCK_TZ_KEK_R)
PMC(APBDEV_PMC_SEC_DISABLE3) |= 0xAA; // R lock: 24-27.
if (lock_mask & PMC_SEC_LOCK_SE_SRK)
PMC(APBDEV_PMC_SEC_DISABLE) |= 0xFF000; // RW lock: 4-7
}
int pmc_enable_partition(pmc_power_rail_t part, u32 enable)
{
u32 part_mask = BIT(part);
u32 desired_state = enable << part;
// Check if the partition has the state we want.
if ((PMC(APBDEV_PMC_PWRGATE_STATUS) & part_mask) == desired_state)
return 1;
u32 i = 5001;
while (PMC(APBDEV_PMC_PWRGATE_TOGGLE) & 0x100)
{
usleep(1);
i--;
if (i < 1)
return 0;
}
// Toggle power gating.
PMC(APBDEV_PMC_PWRGATE_TOGGLE) = part | 0x100;
i = 5001;
while (i > 0)
{
if ((PMC(APBDEV_PMC_PWRGATE_STATUS) & part_mask) == desired_state)
break;
usleep(1);
i--;
}
return 1;
}
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