From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/common/stdio.c | 401 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 401 insertions(+)
create mode 100644 roms/u-boot/common/stdio.c
(limited to 'roms/u-boot/common/stdio.c')
diff --git a/roms/u-boot/common/stdio.c b/roms/u-boot/common/stdio.c
new file mode 100644
index 000000000..d4acc5256
--- /dev/null
+++ b/roms/u-boot/common/stdio.c
@@ -0,0 +1,401 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Changes for multibus/multiadapter I2C support.
+ *
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ */
+
+#include <config.h>
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <stdarg.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+#include <serial.h>
+#include <splash.h>
+#include <i2c.h>
+#include <asm/global_data.h>
+#include <dm/device-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct stdio_dev devs;
+struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
+char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
+
+int stdio_file_to_flags(const int file)
+{
+ switch (file) {
+ case stdin:
+ return DEV_FLAGS_INPUT;
+ case stdout:
+ case stderr:
+ return DEV_FLAGS_OUTPUT;
+ default:
+ return -EINVAL;
+ }
+}
+
+#if CONFIG_IS_ENABLED(SYS_DEVICE_NULLDEV)
+static void nulldev_putc(struct stdio_dev *dev, const char c)
+{
+ /* nulldev is empty! */
+}
+
+static void nulldev_puts(struct stdio_dev *dev, const char *s)
+{
+ /* nulldev is empty! */
+}
+
+static int nulldev_input(struct stdio_dev *dev)
+{
+ /* nulldev is empty! */
+ return 0;
+}
+
+static void nulldev_register(void)
+{
+ struct stdio_dev dev;
+
+ memset(&dev, '\0', sizeof(dev));
+
+ strcpy(dev.name, "nulldev");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
+ dev.putc = nulldev_putc;
+ dev.puts = nulldev_puts;
+ dev.getc = nulldev_input;
+ dev.tstc = nulldev_input;
+
+ stdio_register(&dev);
+}
+#else
+static inline void nulldev_register(void) {}
+#endif /* SYS_DEVICE_NULLDEV */
+
+static void stdio_serial_putc(struct stdio_dev *dev, const char c)
+{
+ serial_putc(c);
+}
+
+static void stdio_serial_puts(struct stdio_dev *dev, const char *s)
+{
+ serial_puts(s);
+}
+
+static int stdio_serial_getc(struct stdio_dev *dev)
+{
+ return serial_getc();
+}
+
+static int stdio_serial_tstc(struct stdio_dev *dev)
+{
+ return serial_tstc();
+}
+
+/**************************************************************************
+ * SYSTEM DRIVERS
+ **************************************************************************
+ */
+
+static void drv_system_init (void)
+{
+ struct stdio_dev dev;
+
+ memset (&dev, 0, sizeof (dev));
+
+ strcpy (dev.name, "serial");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
+ dev.putc = stdio_serial_putc;
+ dev.puts = stdio_serial_puts;
+ dev.getc = stdio_serial_getc;
+ dev.tstc = stdio_serial_tstc;
+ stdio_register (&dev);
+
+ nulldev_register();
+}
+
+/**************************************************************************
+ * DEVICES
+ **************************************************************************
+ */
+struct list_head* stdio_get_list(void)
+{
+ return &devs.list;
+}
+
+/**
+ * stdio_probe_device() - Find a device which provides the given stdio device
+ *
+ * This looks for a device of the given uclass which provides a particular
+ * stdio device. It is currently really only useful for UCLASS_VIDEO.
+ *
+ * Ultimately we want to be able to probe a device by its stdio name. At
+ * present devices register in their probe function (for video devices this
+ * is done in vidconsole_post_probe()) and we don't know what name they will
+ * use until they do so.
+ * TODO(sjg@chromium.org): We should be able to determine the name before
+ * probing, and probe the required device.
+ *
+ * @name: stdio device name (e.g. "vidconsole")
+ * id: Uclass ID of device to look for (e.g. UCLASS_VIDEO)
+ * @sdevp: Returns stdout device, if found, else NULL
+ * @return 0 if found, -ENOENT if no device found with that name, other -ve
+ * on other error
+ */
+static int stdio_probe_device(const char *name, enum uclass_id id,
+ struct stdio_dev **sdevp)
+{
+ struct stdio_dev *sdev;
+ struct udevice *dev;
+ int seq, ret;
+
+ *sdevp = NULL;
+ seq = trailing_strtoln(name, NULL);
+ if (seq == -1)
+ seq = 0;
+ ret = uclass_get_device_by_seq(id, seq, &dev);
+ if (ret == -ENODEV)
+ ret = uclass_first_device_err(id, &dev);
+ if (ret) {
+ debug("No %s device for seq %d (%s)\n", uclass_get_name(id),
+ seq, name);
+ return ret;
+ }
+ /* The device should be be the last one registered */
+ sdev = list_empty(&devs.list) ? NULL :
+ list_last_entry(&devs.list, struct stdio_dev, list);
+ if (!sdev || strcmp(sdev->name, name)) {
+ debug("Device '%s' did not register with stdio as '%s'\n",
+ dev->name, name);
+ return -ENOENT;
+ }
+ *sdevp = sdev;
+
+ return 0;
+}
+
+struct stdio_dev *stdio_get_by_name(const char *name)
+{
+ struct list_head *pos;
+ struct stdio_dev *sdev;
+
+ if (!name)
+ return NULL;
+
+ list_for_each(pos, &devs.list) {
+ sdev = list_entry(pos, struct stdio_dev, list);
+ if (strcmp(sdev->name, name) == 0)
+ return sdev;
+ }
+ if (IS_ENABLED(CONFIG_DM_VIDEO)) {
+ /*
+ * We did not find a suitable stdio device. If there is a video
+ * driver with a name starting with 'vidconsole', we can try
+ * probing that in the hope that it will produce the required
+ * stdio device.
+ *
+ * This function is sometimes called with the entire value of
+ * 'stdout', which may include a list of devices separate by
+ * commas. Obviously this is not going to work, so we ignore
+ * that case. The call path in that case is
+ * console_init_r() -> console_search_dev() -> stdio_get_by_name()
+ */
+ if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') &&
+ !stdio_probe_device(name, UCLASS_VIDEO, &sdev))
+ return sdev;
+ }
+
+ return NULL;
+}
+
+struct stdio_dev *stdio_clone(struct stdio_dev *dev)
+{
+ struct stdio_dev *_dev;
+
+ if (!dev)
+ return NULL;
+
+ _dev = calloc(1, sizeof(struct stdio_dev));
+ if (!_dev)
+ return NULL;
+
+ memcpy(_dev, dev, sizeof(struct stdio_dev));
+
+ return _dev;
+}
+
+int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp)
+{
+ struct stdio_dev *_dev;
+
+ _dev = stdio_clone(dev);
+ if (!_dev)
+ return -ENODEV;
+ list_add_tail(&_dev->list, &devs.list);
+ if (devp)
+ *devp = _dev;
+
+ return 0;
+}
+
+int stdio_register(struct stdio_dev *dev)
+{
+ return stdio_register_dev(dev, NULL);
+}
+
+int stdio_deregister_dev(struct stdio_dev *dev, int force)
+{
+ struct list_head *pos;
+ char temp_names[3][16];
+ int i;
+
+ /* get stdio devices (ListRemoveItem changes the dev list) */
+ for (i = 0 ; i < MAX_FILES; i++) {
+ if (stdio_devices[i] == dev) {
+ if (force) {
+ strcpy(temp_names[i], "nulldev");
+ continue;
+ }
+ /* Device is assigned -> report error */
+ return -EBUSY;
+ }
+ memcpy(&temp_names[i][0], stdio_devices[i]->name,
+ sizeof(temp_names[i]));
+ }
+
+ list_del(&dev->list);
+ free(dev);
+
+ /* reassign device list */
+ list_for_each(pos, &devs.list) {
+ dev = list_entry(pos, struct stdio_dev, list);
+ for (i = 0 ; i < MAX_FILES; i++) {
+ if (strcmp(dev->name, temp_names[i]) == 0)
+ stdio_devices[i] = dev;
+ }
+ }
+
+ return 0;
+}
+
+int stdio_init_tables(void)
+{
+#if defined(CONFIG_NEEDS_MANUAL_RELOC)
+ /* already relocated for current ARM implementation */
+ ulong relocation_offset = gd->reloc_off;
+ int i;
+
+ /* relocate device name pointers */
+ for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
+ stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
+ relocation_offset);
+ }
+#endif /* CONFIG_NEEDS_MANUAL_RELOC */
+
+ /* Initialize the list */
+ INIT_LIST_HEAD(&devs.list);
+
+ return 0;
+}
+
+int stdio_add_devices(void)
+{
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ if (IS_ENABLED(CONFIG_DM_KEYBOARD)) {
+ /*
+ * For now we probe all the devices here. At some point this
+ * should be done only when the devices are required - e.g. we
+ * have a list of input devices to start up in the stdin
+ * environment variable. That work probably makes more sense
+ * when stdio itself is converted to driver model.
+ *
+ * TODO(sjg@chromium.org): Convert changing
+ * uclass_first_device() etc. to return the device even on
+ * error. Then we could use that here.
+ */
+ ret = uclass_get(UCLASS_KEYBOARD, &uc);
+ if (ret)
+ return ret;
+
+ /*
+ * Don't report errors to the caller - assume that they are
+ * non-fatal
+ */
+ uclass_foreach_dev(dev, uc) {
+ ret = device_probe(dev);
+ if (ret)
+ printf("Failed to probe keyboard '%s'\n",
+ dev->name);
+ }
+ }
+#ifdef CONFIG_SYS_I2C
+ i2c_init_all();
+#endif
+ if (IS_ENABLED(CONFIG_DM_VIDEO)) {
+ /*
+ * If the console setting is not in environment variables then
+ * console_init_r() will not be calling iomux_doenv() (which
+ * calls console_search_dev()). So we will not dynamically add
+ * devices by calling stdio_probe_device().
+ *
+ * So just probe all video devices now so that whichever one is
+ * required will be available.
+ */
+ struct udevice *vdev;
+ int ret;
+
+ if (!IS_ENABLED(CONFIG_SYS_CONSOLE_IS_IN_ENV)) {
+ for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
+ vdev;
+ ret = uclass_next_device(&vdev))
+ ;
+ if (ret)
+ printf("%s: Video device failed (ret=%d)\n",
+ __func__, ret);
+ }
+ if (IS_ENABLED(CONFIG_SPLASH_SCREEN) &&
+ IS_ENABLED(CONFIG_CMD_BMP))
+ splash_display();
+ } else {
+ if (IS_ENABLED(CONFIG_LCD))
+ drv_lcd_init();
+ if (IS_ENABLED(CONFIG_VIDEO) ||
+ IS_ENABLED(CONFIG_CFB_CONSOLE) ||
+ IS_ENABLED(CONFIG_VIDEO_VCXK))
+ drv_video_init();
+ }
+
+#if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
+ drv_keyboard_init();
+#endif
+ drv_system_init();
+ serial_stdio_init();
+#ifdef CONFIG_USB_TTY
+ drv_usbtty_init();
+#endif
+ if (IS_ENABLED(CONFIG_NETCONSOLE))
+ drv_nc_init();
+#ifdef CONFIG_JTAG_CONSOLE
+ drv_jtag_console_init();
+#endif
+ if (IS_ENABLED(CONFIG_CBMEM_CONSOLE))
+ cbmemc_init();
+
+ return 0;
+}
+
+int stdio_init(void)
+{
+ stdio_init_tables();
+ stdio_add_devices();
+
+ return 0;
+}
--
cgit