Date: Mon, 1 May 2023 21:28:48 GMT From: Warner Losh <imp@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: cf6044857e2b - main - stand: Testing program for smbios Message-ID: <202305012128.341LSmDU085867@gitrepo.freebsd.org>
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The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=cf6044857e2b20f2ecf90929027e9dd335b38803 commit cf6044857e2b20f2ecf90929027e9dd335b38803 Author: Warner Losh <imp@FreeBSD.org> AuthorDate: 2023-05-01 21:12:19 +0000 Commit: Warner Losh <imp@FreeBSD.org> CommitDate: 2023-05-01 21:12:19 +0000 stand: Testing program for smbios Write a quick and dirty testing program to dump physical memory to help test and debug the smbios.c code in new environments. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D39791 --- tools/boot/smbios/Makefile | 11 ++++++ tools/boot/smbios/main.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++ tools/boot/smbios/stand.h | 18 +++++++++ 3 files changed, 125 insertions(+) diff --git a/tools/boot/smbios/Makefile b/tools/boot/smbios/Makefile new file mode 100644 index 000000000000..a555470aab14 --- /dev/null +++ b/tools/boot/smbios/Makefile @@ -0,0 +1,11 @@ +# $FreeBSD$ + +PROG= smbios +MAN= +.PATH: ${SRCTOP}/stand/libsa +SRCS= main.c +CFLAGS+= -I${.CURDIR} -I${SRCTOP}/stand/libsa + +.include <bsd.prog.mk> + +CFLAGS+= -Wno-cast-align diff --git a/tools/boot/smbios/main.c b/tools/boot/smbios/main.c new file mode 100644 index 000000000000..60263d2ea8d9 --- /dev/null +++ b/tools/boot/smbios/main.c @@ -0,0 +1,96 @@ +/* + * Copyright (c) 2023 Warner Losh + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +/* + * Test program for smbios support in the boot loader. This program will mmap + * physical memory, and print the smbios table at the passed in PA. This is + * intended to test the code and debug problems in a debugger friendly + * environment. + */ + +#include <sys/param.h> +#define setenv my_setenv + +#define SMBIOS_SERIAL_NUMBERS 1 +#define SMBIOS_LITTLE_ENDIAN_UUID 1 + +#include <arpa/inet.h> + +#include "smbios.h" +#include "smbios.c" + +#include <sys/mman.h> + +#define MAX_MAP 10 +#define PAGE (64<<10) + +static struct mapping +{ + uintptr_t pa; + caddr_t va; +} map[MAX_MAP]; +static int fd; +static int nmap; + +caddr_t ptov(uintptr_t pa) +{ + caddr_t va; + uintptr_t pa2; + struct mapping *m = map; + + pa2 = rounddown(pa, PAGE); + for (int i = 0; i < nmap; i++, m++) { + if (m->pa == pa2) { + return (m->va + pa - m->pa); + } + } + if (nmap == MAX_MAP) + errx(1, "Too many maps"); + va = mmap(0, PAGE, PROT_READ, MAP_SHARED, fd, pa2); + if (va == MAP_FAILED) + err(1, "mmap offset %#lx", (long)pa2); + m = &map[nmap++]; + m->pa = pa2; + m->va = va; + return (m->va + pa - m->pa); +} + +static void +cleanup(void) +{ + for (int i = 0; i < nmap; i++) { + munmap(map[i].va, PAGE); + } +} + +int +my_setenv(const char *name, const char *value, int overwrite __unused) +{ + printf("%s=%s\n", name, value); + return 0; +} + +static void +usage(void) +{ + errx(1, "smbios address"); +} + +int +main(int argc, char **argv) +{ + uintptr_t addr; + + if (argc != 2) + usage(); + addr = strtoull(argv[1], NULL, 0); + /* For mmap later */ + fd = open("/dev/mem", O_RDONLY); + if (fd < 0) + err(1, "Opening /dev/mem"); + smbios_detect(ptov(addr)); + cleanup(); +} diff --git a/tools/boot/smbios/stand.h b/tools/boot/smbios/stand.h new file mode 100644 index 000000000000..d754189fad13 --- /dev/null +++ b/tools/boot/smbios/stand.h @@ -0,0 +1,18 @@ +/* + * Copyright (c) 2023 Warner Losh + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <sys/types.h> + +#include <err.h> +#include <fcntl.h> +#include <limits.h> +#include <stdlib.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +caddr_t ptov(uintptr_t pa);
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