blob: ade083753b6e128f80b0b174cd3e43399b5326dc [file] [log] [blame]
Rex-BC Chen1782ce92021-12-02 14:03:44 +08001/*
2 * Copyright (c) 2022, MediaTek Inc. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#include <arch_helpers.h>
8#include <common/debug.h>
9#include <lib/mmio.h>
10#include <mtk_sip_svc.h>
11#include <plat_dfd.h>
12
13static bool dfd_enabled;
14static uint64_t dfd_base_addr;
15static uint64_t dfd_chain_length;
16static uint64_t dfd_cache_dump;
17
18static void dfd_setup(uint64_t base_addr, uint64_t chain_length,
19 uint64_t cache_dump)
20{
21 mmio_write_32(MCUSYS_DFD_MAP, base_addr >> 24);
22 mmio_write_32(WDT_DEBUG_CTL, WDT_DEBUG_CTL_VAL_0);
23
24 sync_writel(DFD_INTERNAL_CTL, (BIT(0) | BIT(2)));
25
26 mmio_setbits_32(DFD_INTERNAL_CTL, BIT(13));
27 mmio_setbits_32(DFD_INTERNAL_CTL, BIT(3));
28 mmio_setbits_32(DFD_INTERNAL_CTL, (BIT(19) | BIT(20)));
29 mmio_write_32(DFD_INTERNAL_PWR_ON, (BIT(0) | BIT(1) | BIT(3)));
30 mmio_write_32(DFD_CHAIN_LENGTH0, chain_length);
31 mmio_write_32(DFD_INTERNAL_SHIFT_CLK_RATIO, 0);
32 mmio_write_32(DFD_INTERNAL_TEST_SO_0, DFD_INTERNAL_TEST_SO_0_VAL);
33 mmio_write_32(DFD_INTERNAL_NUM_OF_TEST_SO_GROUP, 1);
34
35 mmio_write_32(DFD_TEST_SI_0, DFD_TEST_SI_0_VAL);
36 mmio_write_32(DFD_TEST_SI_1, DFD_TEST_SI_1_VAL);
37
38 sync_writel(DFD_V30_CTL, 1);
39
40 mmio_write_32(DFD_V30_BASE_ADDR, (base_addr & 0xFFF00000));
41
42 /* setup global variables for suspend and resume */
43 dfd_enabled = true;
44 dfd_base_addr = base_addr;
45 dfd_chain_length = chain_length;
46 dfd_cache_dump = cache_dump;
47
48 if ((cache_dump & DFD_CACHE_DUMP_ENABLE) != 0UL) {
49 mmio_write_32(WDT_DEBUG_CTL, WDT_DEBUG_CTL_VAL_1);
50 sync_writel(DFD_V35_ENALBE, 1);
51 sync_writel(DFD_V35_TAP_NUMBER, DFD_V35_TAP_NUMBER_VAL);
52 sync_writel(DFD_V35_TAP_EN, DFD_V35_TAP_EN_VAL);
53 sync_writel(DFD_V35_SEQ0_0, DFD_V35_SEQ0_0_VAL);
54
55 if (cache_dump & DFD_PARITY_ERR_TRIGGER) {
56 sync_writel(DFD_HW_TRIGGER_MASK, DFD_HW_TRIGGER_MASK_VAL);
57 mmio_setbits_32(DFD_INTERNAL_CTL, BIT(4));
58 }
59 }
60 dsbsy();
61}
62
63void dfd_resume(void)
64{
65 if (dfd_enabled == true) {
66 dfd_setup(dfd_base_addr, dfd_chain_length, dfd_cache_dump);
67 }
68}
69
70uint64_t dfd_smc_dispatcher(uint64_t arg0, uint64_t arg1,
71 uint64_t arg2, uint64_t arg3)
72{
73 uint64_t ret = 0L;
74
75 switch (arg0) {
76 case PLAT_MTK_DFD_SETUP_MAGIC:
77 INFO("[%s] DFD setup call from kernel\n", __func__);
78 dfd_setup(arg1, arg2, arg3);
79 break;
80 case PLAT_MTK_DFD_READ_MAGIC:
81 /* only allow to access DFD register base + 0x200 */
82 if (arg1 <= 0x200) {
83 ret = mmio_read_32(MISC1_CFG_BASE + arg1);
84 }
85 break;
86 case PLAT_MTK_DFD_WRITE_MAGIC:
87 /* only allow to access DFD register base + 0x200 */
88 if (arg1 <= 0x200) {
89 sync_writel(MISC1_CFG_BASE + arg1, arg2);
90 }
91 break;
92 default:
93 ret = MTK_SIP_E_INVALID_PARAM;
94 break;
95 }
96
97 return ret;
98}