diff options
Diffstat (limited to 'roms/u-boot/drivers/serial/sandbox.c')
| -rw-r--r-- | roms/u-boot/drivers/serial/sandbox.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/serial/sandbox.c b/roms/u-boot/drivers/serial/sandbox.c new file mode 100644 index 000000000..5243c955f --- /dev/null +++ b/roms/u-boot/drivers/serial/sandbox.c @@ -0,0 +1,249 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2011 The Chromium OS Authors. + */ + +/* + * This provide a test serial port. It provides an emulated serial port where + * a test program and read out the serial output and inject serial input for + * U-Boot. + */ + +#include <common.h> +#include <console.h> +#include <dm.h> +#include <lcd.h> +#include <os.h> +#include <serial.h> +#include <video.h> +#include <asm/global_data.h> +#include <linux/compiler.h> +#include <asm/serial.h> +#include <asm/state.h> + +DECLARE_GLOBAL_DATA_PTR; + +/** + * output_ansi_colour() - Output an ANSI colour code + * + * @colour: Colour to output (0-7) + */ +static void output_ansi_colour(int colour) +{ + char ansi_code[] = "\x1b[1;3Xm"; + + ansi_code[5] = '0' + colour; + os_write(1, ansi_code, sizeof(ansi_code) - 1); +} + +static void output_ansi_reset(void) +{ + os_write(1, "\x1b[0m", 4); +} + +static int sandbox_serial_probe(struct udevice *dev) +{ + struct sandbox_state *state = state_get_current(); + struct sandbox_serial_priv *priv = dev_get_priv(dev); + + if (state->term_raw != STATE_TERM_COOKED) + os_tty_raw(0, state->term_raw == STATE_TERM_RAW_WITH_SIGS); + priv->start_of_line = 0; + + if (state->term_raw != STATE_TERM_RAW) + disable_ctrlc(1); + membuff_init(&priv->buf, priv->serial_buf, sizeof(priv->serial_buf)); + + return 0; +} + +static int sandbox_serial_remove(struct udevice *dev) +{ + struct sandbox_serial_plat *plat = dev_get_plat(dev); + + if (plat->colour != -1) + output_ansi_reset(); + + return 0; +} + +static int sandbox_serial_putc(struct udevice *dev, const char ch) +{ + struct sandbox_serial_priv *priv = dev_get_priv(dev); + struct sandbox_serial_plat *plat = dev_get_plat(dev); + + /* With of-platdata we don't real the colour correctly, so disable it */ + if (!CONFIG_IS_ENABLED(OF_PLATDATA) && priv->start_of_line && + plat->colour != -1) { + priv->start_of_line = false; + output_ansi_colour(plat->colour); + } + + os_write(1, &ch, 1); + if (ch == '\n') + priv->start_of_line = true; + + return 0; +} + +static int sandbox_serial_pending(struct udevice *dev, bool input) +{ + struct sandbox_serial_priv *priv = dev_get_priv(dev); + ssize_t count; + char *data; + int avail; + + if (!input) + return 0; + + os_usleep(100); + if (!IS_ENABLED(CONFIG_SPL_BUILD)) + video_sync_all(); + avail = membuff_putraw(&priv->buf, 100, false, &data); + if (!avail) + return 1; /* buffer full */ + + count = os_read(0, data, avail); + if (count > 0) + membuff_putraw(&priv->buf, count, true, &data); + + return membuff_avail(&priv->buf); +} + +static int sandbox_serial_getc(struct udevice *dev) +{ + struct sandbox_serial_priv *priv = dev_get_priv(dev); + + if (!sandbox_serial_pending(dev, true)) + return -EAGAIN; /* buffer empty */ + + return membuff_getbyte(&priv->buf); +} + +#ifdef CONFIG_DEBUG_UART_SANDBOX + +#include <debug_uart.h> + +static inline void _debug_uart_init(void) +{ +} + +static inline void _debug_uart_putc(int ch) +{ + os_putc(ch); +} + +DEBUG_UART_FUNCS + +#endif /* CONFIG_DEBUG_UART_SANDBOX */ + +static int sandbox_serial_getconfig(struct udevice *dev, uint *serial_config) +{ + uint config = SERIAL_DEFAULT_CONFIG; + + if (!serial_config) + return -EINVAL; + + *serial_config = config; + + return 0; +} + +static int sandbox_serial_setconfig(struct udevice *dev, uint serial_config) +{ + u8 parity = SERIAL_GET_PARITY(serial_config); + u8 bits = SERIAL_GET_BITS(serial_config); + u8 stop = SERIAL_GET_STOP(serial_config); + + if (bits != SERIAL_8_BITS || stop != SERIAL_ONE_STOP || + parity != SERIAL_PAR_NONE) + return -ENOTSUPP; /* not supported in driver*/ + + return 0; +} + +static int sandbox_serial_getinfo(struct udevice *dev, + struct serial_device_info *serial_info) +{ + struct serial_device_info info = { + .type = SERIAL_CHIP_UNKNOWN, + .addr_space = SERIAL_ADDRESS_SPACE_IO, + .addr = SERIAL_DEFAULT_ADDRESS, + .reg_width = 1, + .reg_offset = 0, + .reg_shift = 0, + .clock = SERIAL_DEFAULT_CLOCK, + }; + + if (!serial_info) + return -EINVAL; + + *serial_info = info; + + return 0; +} + +static const char * const ansi_colour[] = { + "black", "red", "green", "yellow", "blue", "megenta", "cyan", + "white", +}; + +static int sandbox_serial_of_to_plat(struct udevice *dev) +{ + struct sandbox_serial_plat *plat = dev_get_plat(dev); + const char *colour; + int i; + + if (CONFIG_IS_ENABLED(OF_PLATDATA)) + return 0; + plat->colour = -1; + colour = dev_read_string(dev, "sandbox,text-colour"); + if (colour) { + for (i = 0; i < ARRAY_SIZE(ansi_colour); i++) { + if (!strcmp(colour, ansi_colour[i])) { + plat->colour = i; + break; + } + } + } + + return 0; +} + +static const struct dm_serial_ops sandbox_serial_ops = { + .putc = sandbox_serial_putc, + .pending = sandbox_serial_pending, + .getc = sandbox_serial_getc, + .getconfig = sandbox_serial_getconfig, + .setconfig = sandbox_serial_setconfig, + .getinfo = sandbox_serial_getinfo, +}; + +static const struct udevice_id sandbox_serial_ids[] = { + { .compatible = "sandbox,serial" }, + { } +}; + +U_BOOT_DRIVER(sandbox_serial) = { + .name = "sandbox_serial", + .id = UCLASS_SERIAL, + .of_match = sandbox_serial_ids, + .of_to_plat = sandbox_serial_of_to_plat, + .plat_auto = sizeof(struct sandbox_serial_plat), + .priv_auto = sizeof(struct sandbox_serial_priv), + .probe = sandbox_serial_probe, + .remove = sandbox_serial_remove, + .ops = &sandbox_serial_ops, + .flags = DM_FLAG_PRE_RELOC, +}; + +#if !CONFIG_IS_ENABLED(OF_PLATDATA) +static const struct sandbox_serial_plat platdata_non_fdt = { + .colour = -1, +}; + +U_BOOT_DRVINFO(serial_sandbox_non_fdt) = { + .name = "sandbox_serial", + .plat = &platdata_non_fdt, +}; +#endif |