| Andrey Petrov | 1b325dd | 2020-03-20 12:12:12 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrey Petrov | 1b325dd | 2020-03-20 12:12:12 -0700 | [diff] [blame] | 2 | |
| 3 | #include <bootblock_common.h> |
| 4 | #include <device/pci_def.h> |
| 5 | #include <device/pci_ops.h> |
| 6 | #include <intelblocks/lpc_lib.h> |
| 7 | #include <intelblocks/pcr.h> |
| 8 | #include <soc/pci_devs.h> |
| 9 | #include <soc/pcr_ids.h> |
| 10 | #include <superio/aspeed/ast2400/ast2400.h> |
| 11 | #include <superio/aspeed/common/aspeed.h> |
| Maxim Polyakov | 04a2edf | 2020-04-26 21:08:20 +0300 | [diff] [blame] | 12 | #include "include/gpio.h" |
| Andrey Petrov | 1b325dd | 2020-03-20 12:12:12 -0700 | [diff] [blame] | 13 | |
| 14 | void bootblock_mainboard_early_init(void) |
| 15 | { |
| Maxim Polyakov | 04a2edf | 2020-04-26 21:08:20 +0300 | [diff] [blame] | 16 | /* Configure Lewisburg PCH GPIOs */ |
| 17 | gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table)); |
| 18 | |
| Andrey Petrov | 1b325dd | 2020-03-20 12:12:12 -0700 | [diff] [blame] | 19 | /* Enable COM1 only */ |
| 20 | pcr_write32(PID_DMI, 0x2770, 0); |
| 21 | pcr_write32(PID_DMI, 0x2774, 1); |
| 22 | |
| 23 | /* Decode for SuperIO (0x2e) and COM1 (0x3f8) */ |
| Nico Huber | f4f365f | 2021-10-14 18:16:39 +0200 | [diff] [blame^] | 24 | pci_s_write_config32(PCH_DEV_LPC, 0x80, (1 << 28) | (1 << 16)); |
| Andrey Petrov | 1b325dd | 2020-03-20 12:12:12 -0700 | [diff] [blame] | 25 | |
| 26 | const pnp_devfn_t serial_dev = PNP_DEV(0x2e, AST2400_SUART1); |
| 27 | aspeed_enable_serial(serial_dev, CONFIG_TTYS0_BASE); |
| 28 | } |