| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * This file consists of data imported from bdk-config.c |
| */ |
| |
| // coreboot |
| #include <string.h> |
| #include <assert.h> |
| #include <device/i2c.h> |
| #include <device/i2c_simple.h> |
| #include <endian.h> |
| #include <soc/timer.h> |
| |
| // BDK |
| #include <libbdk-arch/bdk-numa.h> |
| #include <libbdk-hal/bdk-config.h> |
| #include <libbdk-hal/bdk-twsi.h> |
| #include <libbdk-boot/bdk-watchdog.h> |
| |
| /** |
| * Do a twsi read from a 7 bit device address using an (optional) |
| * internal address. Up to 4 bytes can be read at a time. |
| * |
| * @param twsi_id which TWSI bus to use |
| * @param dev_addr Device address (7 bit) |
| * @param internal_addr |
| * Internal address. Can be 0, 1 or 2 bytes in width |
| * @param num_bytes Number of data bytes to read (1-4) |
| * @param ia_width_bytes |
| * Internal address size in bytes (0, 1, or 2) |
| * |
| * @return Read data, or -1 on failure |
| */ |
| int64_t bdk_twsix_read_ia(bdk_node_t node, int twsi_id, uint8_t dev_addr, |
| uint16_t internal_addr, int num_bytes, |
| int ia_width_bytes) |
| { |
| struct i2c_msg seg[2]; |
| u32 buf; |
| |
| assert (num_bytes < 5); |
| assert (ia_width_bytes < 3); |
| |
| seg[0].flags = 0; |
| seg[0].slave = dev_addr; |
| seg[0].buf = (u8 *)&internal_addr; |
| seg[0].len = ia_width_bytes; |
| seg[1].flags = I2C_M_RD; |
| seg[1].slave = dev_addr; |
| seg[1].buf = (u8 *)&buf; |
| seg[1].len = num_bytes; |
| |
| if (i2c_transfer(twsi_id, seg, ARRAY_SIZE(seg)) < 0) |
| return -1; |
| |
| return cpu_to_be32(buf); |
| } |
| |
| /** |
| * Write 1-8 bytes to a TWSI device using an internal address. |
| * |
| * @param twsi_id which TWSI interface to use |
| * @param dev_addr TWSI device address (7 bit only) |
| * @param internal_addr |
| * TWSI internal address (0, 8, or 16 bits) |
| * @param num_bytes Number of bytes to write (1-8) |
| * @param ia_width_bytes |
| * internal address width, in bytes (0, 1, 2) |
| * @param data Data to write. Data is written MSB first on the twsi bus, |
| * and only the lower num_bytes bytes of the argument are |
| * valid. If a 2 byte write is done, only the low 2 bytes of |
| * the argument is used. |
| * |
| * @return Zero on success, -1 on error |
| */ |
| int bdk_twsix_write_ia(bdk_node_t node, int twsi_id, uint8_t dev_addr, |
| uint16_t internal_addr, int num_bytes, |
| int ia_width_bytes, uint64_t data) |
| { |
| struct i2c_msg seg; |
| u8 buf[10]; |
| |
| assert (num_bytes <= 8); |
| assert (ia_width_bytes < 3); |
| |
| memcpy(buf, &internal_addr, ia_width_bytes); |
| memcpy(&buf[ia_width_bytes], &data, num_bytes); |
| |
| seg.flags = 0; |
| seg.slave = dev_addr; |
| seg.buf = buf; |
| seg.len = num_bytes + ia_width_bytes; |
| |
| return platform_i2c_transfer(twsi_id, &seg, 1); |
| } |
| |
| void bdk_watchdog_set(unsigned int timeout_ms) |
| { |
| watchdog_set(0, timeout_ms); |
| } |
| |
| void bdk_watchdog_poke(void) |
| { |
| watchdog_poke(0); |
| } |
| |
| void bdk_watchdog_disable(void) |
| { |
| watchdog_disable(0); |
| } |
| |
| int bdk_watchdog_is_running(void) |
| { |
| return watchdog_is_running(0); |
| } |