avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/board/esd/vme8349/caddy.c

@@ -0,0 +1,178 @@
+/*
+ * caddy.c -- esd VME8349 support for "missing" access modes in TSI148.
+ * Copyright (c) 2009 esd gmbh.
+ *
+ * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <console.h>
+#include <ioports.h>
+#include <mpc83xx.h>
+#include <asm/mpc8349_pci.h>
+#include <pci.h>
+#include <asm/mmu.h>
+#include <asm/io.h>
+
+#include "caddy.h"
+
+static struct caddy_interface *caddy_interface;
+
+void generate_answer(struct caddy_cmd *cmd, uint32_t status, uint32_t *result)
+{
+	struct caddy_answer *answer;
+	uint32_t ptr;
+
+	answer = &caddy_interface->answer[caddy_interface->answer_in];
+	memset((void *)answer, 0, sizeof(struct caddy_answer));
+	answer->answer = cmd->cmd;
+	answer->issue = cmd->issue;
+	answer->status = status;
+	memcpy(answer->par, result, 5 * sizeof(result[0]));
+	ptr = caddy_interface->answer_in + 1;
+	ptr = ptr & (ANSWER_SIZE - 1);
+	if (ptr != caddy_interface->answer_out)
+		caddy_interface->answer_in = ptr;
+}
+
+int do_caddy(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	unsigned long base_addr;
+	uint32_t ptr;
+	struct caddy_cmd *caddy_cmd;
+	uint32_t result[5];
+	uint16_t data16;
+	uint8_t data8;
+	uint32_t status;
+	pci_dev_t dev;
+	void *pci_ptr;
+
+	if (argc < 2) {
+		puts("Missing parameter\n");
+		return 1;
+	}
+
+	base_addr = simple_strtoul(argv[1], NULL, 16);
+	caddy_interface = (struct caddy_interface *) base_addr;
+
+	memset((void *)caddy_interface, 0, sizeof(struct caddy_interface));
+	memcpy((void *)&caddy_interface->magic[0], &CADDY_MAGIC, 16);
+
+	while (ctrlc() == 0) {
+		if (caddy_interface->cmd_in != caddy_interface->cmd_out) {
+			memset(result, 0, 5 * sizeof(result[0]));
+			status = 0;
+			caddy_cmd = &caddy_interface->cmd[caddy_interface->cmd_out];
+			pci_ptr = (void *)CONFIG_SYS_PCI1_IO_PHYS +
+				(caddy_cmd->addr & 0x001fffff);
+
+			switch (caddy_cmd->cmd) {
+			case CADDY_CMD_IO_READ_8:
+				result[0] = in_8(pci_ptr);
+				break;
+
+			case CADDY_CMD_IO_READ_16:
+				result[0] = in_be16(pci_ptr);
+				break;
+
+			case CADDY_CMD_IO_READ_32:
+				result[0] = in_be32(pci_ptr);
+				break;
+
+			case CADDY_CMD_IO_WRITE_8:
+				data8 = caddy_cmd->par[0] & 0x000000ff;
+				out_8(pci_ptr, data8);
+				break;
+
+			case CADDY_CMD_IO_WRITE_16:
+				data16 = caddy_cmd->par[0] & 0x0000ffff;
+				out_be16(pci_ptr, data16);
+				break;
+
+			case CADDY_CMD_IO_WRITE_32:
+				out_be32(pci_ptr, caddy_cmd->par[0]);
+				break;
+
+			case CADDY_CMD_CONFIG_READ_8:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				status = pci_read_config_byte(dev,
+							      caddy_cmd->addr,
+							      &data8);
+				result[0] = data8;
+				break;
+
+			case CADDY_CMD_CONFIG_READ_16:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				status = pci_read_config_word(dev,
+							      caddy_cmd->addr,
+							      &data16);
+				result[0] = data16;
+				break;
+
+			case CADDY_CMD_CONFIG_READ_32:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				status = pci_read_config_dword(dev,
+							       caddy_cmd->addr,
+							       &result[0]);
+				break;
+
+			case CADDY_CMD_CONFIG_WRITE_8:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				data8 = caddy_cmd->par[3] & 0x000000ff;
+				status = pci_write_config_byte(dev,
+							       caddy_cmd->addr,
+							       data8);
+				break;
+
+			case CADDY_CMD_CONFIG_WRITE_16:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				data16 = caddy_cmd->par[3] & 0x0000ffff;
+				status = pci_write_config_word(dev,
+							       caddy_cmd->addr,
+							       data16);
+				break;
+
+			case CADDY_CMD_CONFIG_WRITE_32:
+				dev = PCI_BDF(caddy_cmd->par[0],
+					      caddy_cmd->par[1],
+					      caddy_cmd->par[2]);
+				status = pci_write_config_dword(dev,
+								caddy_cmd->addr,
+								caddy_cmd->par[3]);
+				break;
+
+			default:
+				status = 0xffffffff;
+				break;
+			}
+
+			generate_answer(caddy_cmd, status, &result[0]);
+
+			ptr = caddy_interface->cmd_out + 1;
+			ptr = ptr & (CMD_SIZE - 1);
+			caddy_interface->cmd_out = ptr;
+		}
+
+		caddy_interface->heartbeat++;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	caddy,	2,	0,	do_caddy,
+	"Start Caddy server.",
+	"Start Caddy server with Data structure a given addr\n"
+	);