Jacky Bai | 64130a3 | 2019-07-18 13:43:17 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019, NXP. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
Dario Binacchi | baf2b31 | 2024-09-12 11:08:36 +0200 | [diff] [blame] | 7 | #include <errno.h> |
| 8 | |
Jacky Bai | 64130a3 | 2019-07-18 13:43:17 +0800 | [diff] [blame] | 9 | #include <lib/mmio.h> |
| 10 | |
| 11 | #include <imx_rdc.h> |
| 12 | |
Dario Binacchi | baf2b31 | 2024-09-12 11:08:36 +0200 | [diff] [blame] | 13 | struct imx_uart { |
| 14 | int index; |
| 15 | unsigned int uart_base; |
| 16 | }; |
| 17 | |
| 18 | static const struct imx_uart imx8m_uart_info[] = { |
| 19 | { /* UART 1 */ |
| 20 | .index = RDC_PDAP_UART1, |
| 21 | .uart_base = IMX_UART1_BASE, |
| 22 | }, { /* UART 2 */ |
| 23 | .index = RDC_PDAP_UART2, |
| 24 | .uart_base = IMX_UART2_BASE, |
| 25 | }, { /* UART 3 */ |
| 26 | .index = RDC_PDAP_UART3, |
| 27 | .uart_base = IMX_UART3_BASE, |
| 28 | }, { /* UART 4 */ |
| 29 | .index = RDC_PDAP_UART4, |
| 30 | .uart_base = IMX_UART4_BASE, |
| 31 | } |
| 32 | }; |
| 33 | |
| 34 | static int imx_rdc_uart_get_pdap_index(unsigned int uart_base) |
| 35 | { |
| 36 | size_t i; |
| 37 | |
| 38 | for (i = 0; i < ARRAY_SIZE(imx8m_uart_info); i++) { |
| 39 | if (imx8m_uart_info[i].uart_base == uart_base) { |
| 40 | return imx8m_uart_info[i].index; |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | return -ENODEV; |
| 45 | } |
| 46 | |
| 47 | static void imx_rdc_console_access_enable(struct imx_rdc_cfg *rdc_cfg, |
| 48 | unsigned int console_base) |
Jacky Bai | 64130a3 | 2019-07-18 13:43:17 +0800 | [diff] [blame] | 49 | { |
Dario Binacchi | baf2b31 | 2024-09-12 11:08:36 +0200 | [diff] [blame] | 50 | struct imx_rdc_cfg *rdc; |
| 51 | int console_pdap_index; |
| 52 | |
| 53 | console_pdap_index = imx_rdc_uart_get_pdap_index(console_base); |
| 54 | if (console_pdap_index < 0) { |
| 55 | return; |
| 56 | } |
| 57 | |
| 58 | for (rdc = rdc_cfg; rdc->type != RDC_INVALID; rdc++) { |
| 59 | if (rdc->type != RDC_PDAP || rdc->index != console_pdap_index) { |
| 60 | continue; |
| 61 | } |
| 62 | |
| 63 | if (rdc->index == console_pdap_index && |
| 64 | rdc->setting.rdc_pdap == (D0R | D0W)) { |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | if (rdc->index == console_pdap_index) { |
| 69 | rdc->setting.rdc_pdap = D0R | D0W; |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | void imx_rdc_init(struct imx_rdc_cfg *rdc_cfg, unsigned int console_base) |
| 75 | { |
| 76 | struct imx_rdc_cfg *rdc = rdc_cfg; |
| 77 | |
| 78 | imx_rdc_console_access_enable(rdc, console_base); |
Jacky Bai | 64130a3 | 2019-07-18 13:43:17 +0800 | [diff] [blame] | 79 | |
| 80 | while (rdc->type != RDC_INVALID) { |
| 81 | switch (rdc->type) { |
| 82 | case RDC_MDA: |
| 83 | /* MDA config */ |
| 84 | mmio_write_32(MDAn(rdc->index), rdc->setting.rdc_mda); |
| 85 | break; |
| 86 | case RDC_PDAP: |
| 87 | /* peripheral access permission config */ |
| 88 | mmio_write_32(PDAPn(rdc->index), rdc->setting.rdc_pdap); |
| 89 | break; |
| 90 | case RDC_MEM_REGION: |
| 91 | /* memory region access permission config */ |
| 92 | mmio_write_32(MRSAn(rdc->index), rdc->setting.rdc_mem_region[0]); |
| 93 | mmio_write_32(MREAn(rdc->index), rdc->setting.rdc_mem_region[1]); |
| 94 | mmio_write_32(MRCn(rdc->index), rdc->setting.rdc_mem_region[2]); |
| 95 | break; |
| 96 | default: |
| 97 | break; |
| 98 | } |
| 99 | |
| 100 | rdc++; |
| 101 | } |
| 102 | } |