| Jacky Bai | a617700 | 2019-03-06 17:15:06 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <stdlib.h> |
| 8 | #include <stdint.h> |
| 9 | #include <stdbool.h> |
| 10 | |
| 11 | #include <common/debug.h> |
| 12 | #include <drivers/delay_timer.h> |
| 13 | #include <lib/mmio.h> |
| 14 | #include <lib/psci/psci.h> |
| 15 | #include <lib/smccc.h> |
| 16 | #include <platform_def.h> |
| 17 | #include <services/std_svc.h> |
| 18 | |
| 19 | #include <gpc.h> |
| 20 | #include <imx_sip_svc.h> |
| 21 | |
| 22 | void imx_gpc_init(void) |
| 23 | { |
| 24 | unsigned int val; |
| 25 | int i; |
| 26 | |
| 27 | /* mask all the wakeup irq by default */ |
| 28 | for (i = 0; i < 4; i++) { |
| 29 | mmio_write_32(IMX_GPC_BASE + IMR1_CORE0_A53 + i * 4, ~0x0); |
| 30 | mmio_write_32(IMX_GPC_BASE + IMR1_CORE1_A53 + i * 4, ~0x0); |
| 31 | mmio_write_32(IMX_GPC_BASE + IMR1_CORE2_A53 + i * 4, ~0x0); |
| 32 | mmio_write_32(IMX_GPC_BASE + IMR1_CORE3_A53 + i * 4, ~0x0); |
| 33 | mmio_write_32(IMX_GPC_BASE + IMR1_CORE0_M4 + i * 4, ~0x0); |
| 34 | } |
| 35 | |
| 36 | val = mmio_read_32(IMX_GPC_BASE + LPCR_A53_BSC); |
| 37 | /* use GIC wake_request to wakeup C0~C3 from LPM */ |
| 38 | val |= 0x30c00000; |
| 39 | /* clear the MASTER0 LPM handshake */ |
| 40 | val &= ~(1 << 6); |
| 41 | mmio_write_32(IMX_GPC_BASE + LPCR_A53_BSC, val); |
| 42 | |
| 43 | /* clear MASTER1 & MASTER2 mapping in CPU0(A53) */ |
| 44 | mmio_clrbits_32(IMX_GPC_BASE + MST_CPU_MAPPING, (MASTER1_MAPPING | |
| 45 | MASTER2_MAPPING)); |
| 46 | |
| 47 | /* set all mix/PU in A53 domain */ |
| 48 | mmio_write_32(IMX_GPC_BASE + PGC_CPU_0_1_MAPPING, 0xffff); |
| 49 | |
| 50 | /* |
| 51 | * Set the CORE & SCU power up timing: |
| 52 | * SW = 0x1, SW2ISO = 0x1; |
| 53 | * the CPU CORE and SCU power up timming counter |
| 54 | * is drived by 32K OSC, each domain's power up |
| 55 | * latency is (SW + SW2ISO) / 32768 |
| 56 | */ |
| 57 | mmio_write_32(IMX_GPC_BASE + COREx_PGC_PCR(0) + 0x4, 0x81); |
| 58 | mmio_write_32(IMX_GPC_BASE + COREx_PGC_PCR(1) + 0x4, 0x81); |
| 59 | mmio_write_32(IMX_GPC_BASE + COREx_PGC_PCR(2) + 0x4, 0x81); |
| 60 | mmio_write_32(IMX_GPC_BASE + COREx_PGC_PCR(3) + 0x4, 0x81); |
| 61 | mmio_write_32(IMX_GPC_BASE + PLAT_PGC_PCR + 0x4, 0x81); |
| 62 | mmio_write_32(IMX_GPC_BASE + PGC_SCU_TIMING, |
| 63 | (0x59 << 10) | 0x5B | (0x2 << 20)); |
| 64 | |
| 65 | /* set DUMMY PDN/PUP ACK by default for A53 domain */ |
| 66 | mmio_write_32(IMX_GPC_BASE + PGC_ACK_SEL_A53, |
| 67 | A53_DUMMY_PUP_ACK | A53_DUMMY_PDN_ACK); |
| 68 | |
| 69 | /* clear DSM by default */ |
| 70 | val = mmio_read_32(IMX_GPC_BASE + SLPCR); |
| 71 | val &= ~SLPCR_EN_DSM; |
| 72 | /* enable the fast wakeup wait mode */ |
| 73 | val |= SLPCR_A53_FASTWUP_WAIT_MODE; |
| 74 | /* clear the RBC */ |
| 75 | val &= ~(0x3f << SLPCR_RBC_COUNT_SHIFT); |
| 76 | /* set the STBY_COUNT to 0x5, (128 * 30)us */ |
| 77 | val &= ~(0x7 << SLPCR_STBY_COUNT_SHFT); |
| 78 | val |= (0x5 << SLPCR_STBY_COUNT_SHFT); |
| 79 | mmio_write_32(IMX_GPC_BASE + SLPCR, val); |
| 80 | |
| 81 | /* |
| 82 | * USB PHY power up needs to make sure RESET bit in SRC is clear, |
| 83 | * otherwise, the PU power up bit in GPC will NOT self-cleared. |
| 84 | * only need to do it once. |
| 85 | */ |
| 86 | mmio_clrbits_32(IMX_SRC_BASE + SRC_OTG1PHY_SCR, 0x1); |
| 87 | mmio_clrbits_32(IMX_SRC_BASE + SRC_OTG2PHY_SCR, 0x1); |
| 88 | |
| 89 | /* enable all the power domain by default */ |
| 90 | mmio_write_32(IMX_GPC_BASE + PU_PGC_UP_TRG, 0x3fcf); |
| 91 | } |