mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 03:08:31 +00:00
0060517ae0
There are a number of places where U-Boot intentionally and legally accesses physical address 0x0000, for example when installing exception vectors on systems where these are located in low memory. Add "cppcheck-suppress nullPointer" comments to silence cppcheck where this is intentional and legal. Signed-off-by: Wolfgang Denk <wd@denx.de>
97 lines
1.8 KiB
C
97 lines
1.8 KiB
C
/*
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* (C) Copyright 2002-2004
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <net.h>
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#include <asm/io.h>
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#include <pci.h>
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#include <asm/4xx_pci.h>
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#include <asm/processor.h>
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#include "pci405.h"
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#if defined(CONFIG_CMD_BSP)
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/*
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* Command loadpci: wait for signal from host and boot image.
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*/
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int do_loadpci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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unsigned int *ptr;
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int count = 0;
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int count2 = 0;
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int i;
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char addr[16];
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char str[] = "\\|/-";
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char *local_args[2];
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/*
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* Mark sync address
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*/
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ptr = 0;
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/* cppcheck-suppress nullPointer */
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*ptr = 0xffffffff;
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puts("\nWaiting for image from pci host -");
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/*
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* Wait for host to write the start address
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*/
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/* cppcheck-suppress nullPointer */
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while (*ptr == 0xffffffff) {
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count++;
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if (!(count % 100)) {
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count2++;
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putc(0x08); /* backspace */
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putc(str[count2 % 4]);
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}
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/* Abort if ctrl-c was pressed */
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if (ctrlc()) {
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puts("\nAbort\n");
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return 0;
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}
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udelay(1000);
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}
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if (*ptr == PCI_RECONFIG_MAGIC) {
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/*
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* Save own pci configuration in PRAM
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*/
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memset((char *)PCI_REGS_ADDR, 0, PCI_REGS_LEN);
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ptr = (unsigned int *)PCI_REGS_ADDR + 1;
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for (i=0; i<0x40; i+=4) {
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pci_read_config_dword(PCIDEVID_405GP, i, ptr++);
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}
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ptr = (unsigned int *)PCI_REGS_ADDR;
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*ptr = crc32(0, (uchar *)PCI_REGS_ADDR+4, PCI_REGS_LEN-4);
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printf("\nStoring PCI Configuration Regs...\n");
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} else {
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sprintf(addr, "%08x", *ptr);
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/*
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* Boot image via bootm
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*/
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printf("\nBooting Image at addr 0x%s ...\n", addr);
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setenv("loadaddr", addr);
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local_args[0] = argv[0];
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local_args[1] = NULL;
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do_bootm (cmdtp, 0, 1, local_args);
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}
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return 0;
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}
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U_BOOT_CMD(
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loadpci, 1, 1, do_loadpci,
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"Wait for pci-image and boot it",
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""
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);
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#endif
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