Angel Pons | c3f58f6 | 2020-04-05 15:46:41 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Aaron Durbin | c626b74 | 2013-11-12 16:40:33 -0600 | [diff] [blame] | 2 | |
Kyösti Mälkki | 5daa1d3 | 2020-06-14 12:01:58 +0300 | [diff] [blame] | 3 | #include <acpi/acpi_gnvs.h> |
Aaron Durbin | c626b74 | 2013-11-12 16:40:33 -0600 | [diff] [blame] | 4 | #include <console/console.h> |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 5 | #include <device/device.h> |
| 6 | #include <device/pci.h> |
Aaron Durbin | c626b74 | 2013-11-12 16:40:33 -0600 | [diff] [blame] | 7 | #include <reg_script.h> |
| 8 | |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 9 | #include <soc/iosf.h> |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 10 | #include <soc/device_nvs.h> |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 11 | #include <soc/ramstage.h> |
Aaron Durbin | c626b74 | 2013-11-12 16:40:33 -0600 | [diff] [blame] | 12 | |
| 13 | static const struct reg_script scc_start_dll[] = { |
| 14 | /* Configure master DLL. */ |
| 15 | REG_IOSF_WRITE(IOSF_PORT_SCORE, 0x4964, 0x00078000), |
| 16 | /* Configure Swing,FSM for Master DLL */ |
| 17 | REG_IOSF_WRITE(IOSF_PORT_SCORE, 0x4970, 0x00000133), |
| 18 | /* Run+Local Reset on Master DLL */ |
| 19 | REG_IOSF_WRITE(IOSF_PORT_SCORE, 0x4970, 0x00001933), |
| 20 | REG_SCRIPT_END, |
| 21 | }; |
| 22 | |
| 23 | static const struct reg_script scc_after_dll[] = { |
| 24 | /* Configure Write Path */ |
| 25 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x4954, ~0x7fff, 0x35ad), |
| 26 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x4958, ~0x7fff, 0x35ad), |
| 27 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x495c, ~0x7fff, 0x35ad), |
| 28 | /* Configure Read Path */ |
| 29 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x43e4, ~0x7fff, 0x35ad), |
| 30 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x4324, ~0x7fff, 0x35ad), |
| 31 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x42b4, ~0x7fff, 0x35ad), |
| 32 | /* eMMC 4.5 TX and RX DLL */ |
| 33 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49a4, ~0x1f001f, 0xa000d), |
| 34 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49a8, ~0x1f001f, 0xd000d), |
| 35 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49ac, ~0x1f001f, 0xd000d), |
| 36 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49b0, ~0x1f001f, 0xd000d), |
| 37 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49b4, ~0x1f001f, 0xd000d), |
| 38 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x49b8, ~0x1, 0x0), |
| 39 | /* cfio_regs_mmc1_ELECTRICAL.nslew/pslew */ |
| 40 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x48c0, ~0x3c, 0x0), |
| 41 | REG_IOSF_RMW(IOSF_PORT_SCORE, 0x48c4, ~0x3c, 0x0), |
| 42 | /* |
| 43 | * iosf2ocp_private.GENREGRW1.cr_clock_enable_clk_ocp = 01 |
| 44 | * iosf2ocp_private.GENREGRW1.cr_clock_enable_clk_xin = 01 |
| 45 | */ |
| 46 | REG_IOSF_RMW(IOSF_PORT_SCC, 0x600, ~0xf, 0x5), |
| 47 | /* Enable IOSF Snoop */ |
| 48 | REG_IOSF_OR(IOSF_PORT_SCC, 0x00, (1 << 7)), |
| 49 | /* SDIO 3V Support. */ |
| 50 | REG_IOSF_RMW(IOSF_PORT_SCC, 0x600, ~0x30, 0x30), |
| 51 | REG_SCRIPT_END, |
| 52 | }; |
| 53 | |
| 54 | void baytrail_init_scc(void) |
| 55 | { |
| 56 | uint32_t dll_values; |
| 57 | |
| 58 | printk(BIOS_DEBUG, "Initializing sideband SCC registers.\n"); |
| 59 | |
| 60 | /* Common Sideband Initialization for SCC */ |
| 61 | reg_script_run(scc_start_dll); |
| 62 | |
| 63 | /* Override Slave Path - populate DLL settings. */ |
| 64 | dll_values = iosf_score_read(0x496c) & 0x7ffff; |
| 65 | dll_values |= iosf_score_read(0x4950) & ~0xfffff; |
| 66 | iosf_score_write(0x4950, dll_values | (1 << 19)); |
| 67 | |
| 68 | reg_script_run(scc_after_dll); |
| 69 | } |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 70 | |
Elyes HAOUAS | 17a3ceb | 2018-05-22 10:42:28 +0200 | [diff] [blame] | 71 | void scc_enable_acpi_mode(struct device *dev, int iosf_reg, int nvs_index) |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 72 | { |
| 73 | struct reg_script ops[] = { |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 74 | /* Disable PCI interrupt, enable Memory and Bus Master */ |
Elyes HAOUAS | d2bbc68 | 2020-04-29 10:12:33 +0200 | [diff] [blame] | 75 | REG_PCI_OR16(PCI_COMMAND, |
Angel Pons | 89739ba | 2020-07-25 02:46:39 +0200 | [diff] [blame] | 76 | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INT_DISABLE), |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 77 | /* Enable ACPI mode */ |
| 78 | REG_IOSF_OR(IOSF_PORT_SCC, iosf_reg, |
| 79 | SCC_CTL_PCI_CFG_DIS | SCC_CTL_ACPI_INT_EN), |
| 80 | REG_SCRIPT_END |
| 81 | }; |
| 82 | struct resource *bar; |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 83 | struct device_nvs *dev_nvs = acpi_get_device_nvs(); |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 84 | |
| 85 | /* Save BAR0 and BAR1 to ACPI NVS */ |
Angel Pons | c1bfbe0 | 2021-11-03 13:18:53 +0100 | [diff] [blame] | 86 | bar = probe_resource(dev, PCI_BASE_ADDRESS_0); |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 87 | if (bar) |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 88 | dev_nvs->scc_bar0[nvs_index] = (u32)bar->base; |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 89 | |
Angel Pons | c1bfbe0 | 2021-11-03 13:18:53 +0100 | [diff] [blame] | 90 | bar = probe_resource(dev, PCI_BASE_ADDRESS_1); |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 91 | if (bar) |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 92 | dev_nvs->scc_bar1[nvs_index] = (u32)bar->base; |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 93 | |
| 94 | /* Device is enabled in ACPI mode */ |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 95 | dev_nvs->scc_en[nvs_index] = 1; |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 96 | |
| 97 | /* Put device in ACPI mode */ |
Aaron Durbin | 616f394 | 2013-12-10 17:12:44 -0800 | [diff] [blame] | 98 | reg_script_run_on_dev(dev, ops); |
Duncan Laurie | 430bf0d | 2013-12-10 14:37:42 -0800 | [diff] [blame] | 99 | } |