util/showdevicetree: drop unmaintained tool

This tool doesn't have a makefile, when trying to compile it manually
with the given instructions it even fails to compile after fixing the
paths in the given command, and it references the non-existing
PCI_BUS_SEGN_BITS Kconfig symbol, so just drop this.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I8ca75db281a215bf3f194ab72a107f666dc0694e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79934
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

Documentation/util.md

@@ -144,7 +144,6 @@ from the local git repository for auditing or release `Bash`
 Does not show variants. `Shell`
 	* _ucode_h_to_bin.sh_ - Microcode conversion tool `Bash`
 	* _update_submodules_ - Check all submodules for updates `Bash`
-* __showdevicetree__ - Compile and dump the device tree `C`
 * __spdtool__ - Dumps SPD ROMs from a given blob to separate files
 using known patterns and reserved bits. Useful for analysing firmware
 that holds SPDs on boards that have soldered down DRAM. `python`

util/README.md

@@ -133,7 +133,6 @@ from the local git repository for auditing or release `Bash`
 Does not show variants. `Shell`
 	* _ucode_h_to_bin.sh_ - Microcode conversion tool `Bash`
 	* _update_submodules_ - Check all submodules for updates `Bash`
-* __showdevicetree__ - Compile and dump the device tree `C`
 * __spdtool__ - Dumps SPD ROMs from a given blob to separate files
 using known patterns and reserved bits. Useful for analysing firmware
 that holds SPDs on boards that have soldered down DRAM. `python`

util/showdevicetree/description.md

@@ -1 +0,0 @@
-Compile and dump the device tree `C`

util/showdevicetree/showdt.c

@@ -1,156 +0,0 @@
-/* Compile and dump the device tree */
-/* SPDX-License-Identifier: GPL-2.0-only */
-#include  <stdio.h>
-/* you can't include string.h due to conflicts with coreboot prototypes. */
-void *memcpy(void *m1, void *m2, size_t s);
-
-struct device_operations default_dev_ops_root = {
-	.read_resources   = NULL,
-	.set_resources    = NULL,
-	.enable_resources = NULL,
-	.init             = NULL,
-	.scan_bus         = NULL,
-	.reset_bus        = NULL,
-};
-
-extern struct device dev_root;
-struct device *all_devices = &dev_root;
-
-const char mainboard_name[] = "showdt";
-
-/*
- * Warning: This function uses a static buffer. Don't call it more than once
- * from the same print statement!
- */
-const char *dev_path(device_t dev)
-{
-	static char buffer[DEVICE_PATH_MAX];
-
-	buffer[0] = '\0';
-	if (!dev) {
-		memcpy(buffer, "<null>", 7);
-	} else {
-		switch(dev->path.type) {
-		case DEVICE_PATH_ROOT:
-			memcpy(buffer, "Root Device", 12);
-			break;
-		case DEVICE_PATH_PCI:
-#if CONFIG_PCI_BUS_SEGN_BITS
-			sprintf(buffer, "PCI: %04x:%02x:%02x.%01x",
-				dev->bus->secondary >> 8,
-				dev->bus->secondary & 0xff,
-				PCI_SLOT(dev->path.pci.devfn),
-				PCI_FUNC(dev->path.pci.devfn));
-#else
-			sprintf(buffer, "PCI: %02x:%02x.%01x",
-				dev->bus->secondary,
-				PCI_SLOT(dev->path.pci.devfn),
-				PCI_FUNC(dev->path.pci.devfn));
-#endif
-			break;
-		case DEVICE_PATH_PNP:
-			sprintf(buffer, "PNP: %04x.%01x",
-				dev->path.pnp.port, dev->path.pnp.device);
-			break;
-		case DEVICE_PATH_I2C:
-			sprintf(buffer, "I2C: %02x:%02x",
-				dev->bus->secondary,
-				dev->path.i2c.device);
-			break;
-		case DEVICE_PATH_APIC:
-			sprintf(buffer, "APIC: %02x",
-				dev->path.apic.apic_id);
-			break;
-		case DEVICE_PATH_IOAPIC:
-			sprintf(buffer, "IOAPIC: %02x",
-				dev->path.ioapic.ioapic_id);
-			break;
-		case DEVICE_PATH_DOMAIN:
-			sprintf(buffer, "DOMAIN: %04x",
-				dev->path.domain.domain);
-			break;
-		case DEVICE_PATH_CPU_CLUSTER:
-			sprintf(buffer, "CPU_CLUSTER: %01x",
-				dev->path.cpu_cluster.cluster);
-			break;
-		case DEVICE_PATH_CPU:
-			sprintf(buffer, "CPU: %02x", dev->path.cpu.id);
-			break;
-		case DEVICE_PATH_CPU_BUS:
-			sprintf(buffer, "CPU_BUS: %02x", dev->path.cpu_bus.id);
-			break;
-		case DEVICE_PATH_MMIO:
-			sprintf(buffer, "MMIO: %08x", dev->path.mmio.addr);
-			break;
-		default:
-			printf("Unknown device path type: %d\n",
-			       dev->path.type);
-			break;
-		}
-	}
-	return buffer;
-}
-
-
-void show_devs_tree(struct device *dev, int debug_level, int depth, int linknum)
-{
-	char depth_str[20] = "";
-	int i;
-	struct device *sibling;
-	struct bus *link;
-
-	for (i = 0; i < depth; i++)
-		depth_str[i] = ' ';
-	depth_str[i] = '\0';
-
-	printf("%s%s: enabled %d%s\n",
-		depth_str, dev_path(dev), dev->enabled,
-		dev->chip_ops ? ":has a chip":"");
-
-	for (link = dev->link_list; link; link = link->next) {
-		for (sibling = link->children; sibling;
-		     sibling = sibling->sibling)
-			show_devs_tree(sibling, debug_level, depth + 1, i);
-	}
-}
-
-void show_all_devs_tree(int debug_level, const char *msg)
-{
-	printf("Show all devs in tree form...%s\n", msg);
-
-	show_devs_tree(all_devices, debug_level, 0, -1);
-}
-
-void show_devs_subtree(struct device *root, int debug_level, const char *msg)
-{
-	printf("Show all devs in subtree %s...%s\n",
-	       dev_path(root), msg);
-
-	printf("%s\n", msg);
-	show_devs_tree(root, debug_level, 0, -1);
-}
-
-void show_all_devs(int debug_level, const char *msg)
-{
-	struct device *dev;
-
-	printf("Show all devs...%s\n", msg);
-	for (dev = all_devices; dev; dev = dev->next) {
-		printf("%s: enabled %d%s\n",
-			dev_path(dev), dev->enabled,
-			dev->chip_ops ? ":has a chip":"");
-	}
-}
-
-main()
-{
-	show_all_devs(1, "");
-	show_all_devs_tree(1, "");
-}
-
-/*
- * Example: (yank this and paste into M-x compile in emacs)
- * or tail -2 showdt.c | head -1 |sh
- * or whatever.
-   cc -I ../src -I ../src/include -I ../src/arch/arm/include/ -include build/mainboard/google/snow/static.c showdt.c
-*/