From: Kees Jongenburger Date: Fri, 13 Dec 2013 10:18:02 +0000 (+0100) Subject: arm:refactor replace cmdline.txt by bootargs passed to the kernel. X-Git-Tag: v3.3.0~661 X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/index.css?a=commitdiff_plain;h=8c02dd7b2a4755bf3d154e84a34b5bf06c5ecacc;p=minix.git arm:refactor replace cmdline.txt by bootargs passed to the kernel. Put the boot arguments in uEnv.txt and not in cmdline.txt to allow a more dynamic configuration of the system. We now also pass the u-boot board_name parameter to the kernel. --- diff --git a/kernel/arch/earm/pre_init.c b/kernel/arch/earm/pre_init.c index 7360bd661..9778eed1b 100644 --- a/kernel/arch/earm/pre_init.c +++ b/kernel/arch/earm/pre_init.c @@ -30,7 +30,7 @@ struct kmessages kmessages; /* pg_utils.c uses this; in this phase, there is a 1:1 mapping. */ phys_bytes vir2phys(void *addr) { return (phys_bytes) addr; } -static void setup_mbi(multiboot_info_t *mbi); +static void setup_mbi(multiboot_info_t *mbi, char *bootargs); /* String length used for mb_itoa */ #define ITOA_BUFFER_SIZE 20 @@ -103,7 +103,6 @@ int overlaps(multiboot_module_t *mod, int n, int cmp_mod) /* XXX: hard-coded stuff for modules */ #define MB_MODS_NR 12 #define MB_MODS_BASE 0x82000000 -#define MB_PARAM_MOD 0x88000000 #define MB_MODS_ALIGN 0x00800000 /* 8 MB */ #define MB_MMAP_START 0x80000000 #define MB_MMAP_SIZE 0x10000000 /* 256 MB */ @@ -111,7 +110,7 @@ int overlaps(multiboot_module_t *mod, int n, int cmp_mod) multiboot_module_t mb_modlist[MB_MODS_NR]; multiboot_memory_map_t mb_memmap; -void setup_mbi(multiboot_info_t *mbi) +void setup_mbi(multiboot_info_t *mbi, char *bootargs) { memset(mbi, 0, sizeof(*mbi)); mbi->flags = MULTIBOOT_INFO_MODS | MULTIBOOT_INFO_MEM_MAP | @@ -127,8 +126,8 @@ void setup_mbi(multiboot_info_t *mbi) mb_modlist[i].cmdline = 0; } - /* Final 'module' is actually a string holding the boot cmdline */ - mbi->cmdline = MB_PARAM_MOD; + /* morph the bootargs into multiboot */ + mbi->cmdline = (u32_t) bootargs; mbi->mmap_addr =(u32_t)&mb_memmap; mbi->mmap_length = sizeof(mb_memmap); @@ -139,7 +138,7 @@ void setup_mbi(multiboot_info_t *mbi) mb_memmap.type = MULTIBOOT_MEMORY_AVAILABLE; } -void get_parameters(u32_t ebx, kinfo_t *cbi) +void get_parameters(kinfo_t *cbi, char *bootargs) { multiboot_memory_map_t *mmap; multiboot_info_t *mbi = &cbi->mbi; @@ -153,8 +152,7 @@ void get_parameters(u32_t ebx, kinfo_t *cbi) static char cmdline[BUF]; /* get our own copy of the multiboot info struct and module list */ - //memcpy((void *) mbi, (void *) ebx, sizeof(*mbi)); - setup_mbi(mbi); + setup_mbi(mbi, bootargs); /* Set various bits of info for the higher-level kernel. */ cbi->mem_high_phys = 0; @@ -277,16 +275,33 @@ void get_parameters(u32_t ebx, kinfo_t *cbi) } } -kinfo_t *pre_init(u32_t magic, u32_t ebx) +/* + * During low level init many things are not supposed to work + * serial being one of them. We therefore can't rely on the + * serial to debug. POORMANS_FAILURE_NOTIFICATION can be used + * before we setup our own vector table and will result in calling + * the bootloader's debugging methods that will hopefully show some + * information like the currnet PC at on the serial. + */ +#define POORMANS_FAILURE_NOTIFICATION asm volatile("svc #00\n") + +kinfo_t *pre_init(u32_t argc, char **argv) { /* Clear BSS */ memset(&_edata, 0, (u32_t)&_end - (u32_t)&_edata); + /* we get called in a c like fashion where the first arg + * is the program name (load address) and the rest are + * arguments. by convention the second argument is the + * command line */ + if (argc != 2){ + POORMANS_FAILURE_NOTIFICATION; + } omap3_ser_init(); /* Get our own copy boot params pointed to by ebx. * Here we find out whether we should do serial output. */ - get_parameters(ebx, &kinfo); + get_parameters(&kinfo, argv[1]); /* Make and load a pagetable that will map the kernel * to where it should be; but first a 1:1 mapping so diff --git a/releasetools/arm_sdimage.sh b/releasetools/arm_sdimage.sh index b8b40d75a..360548531 100755 --- a/releasetools/arm_sdimage.sh +++ b/releasetools/arm_sdimage.sh @@ -153,27 +153,20 @@ mkfs.vfat ${IMG_DIR}/fat.img # Create a uEnv.txt file # -n default to network boot # -p add a prefix to the network booted files (e.g. xm/" -./releasetools/gen_uEnv.txt.sh > ${IMG_DIR}/uEnv.txt - -# -# Generate the MINIX command line -# -# options: # -c set console e.g. tty02 or tty00 # -v set verbosity e.g. 0 to 3 -./releasetools/gen_cmdline.txt.sh -c ${CONSOLE} > ${IMG_DIR}/cmdline.txt +#./releasetools/gen_uEnv.txt.sh -c ${CONSOLE} -n -p bb/ > ${IMG_DIR}/uEnv.txt +./releasetools/gen_uEnv.txt.sh -c ${CONSOLE} > ${IMG_DIR}/uEnv.txt echo "Copying configuration kernel and boot modules" mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/$MLO ::MLO mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/$UBOOT ::u-boot.img mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/uEnv.txt ::uEnv.txt -mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/cmdline.txt ::cmdline.txt # # For tftp booting # cp ${IMG_DIR}/uEnv.txt ${OBJ}/ -cp ${IMG_DIR}/cmdline.txt ${OBJ}/ # # Do some last processing of the kernel and servers before also putting diff --git a/releasetools/gen_cmdline.txt.sh b/releasetools/gen_cmdline.txt.sh deleted file mode 100755 index ff8d87ee9..000000000 --- a/releasetools/gen_cmdline.txt.sh +++ /dev/null @@ -1,30 +0,0 @@ -#!/bin/sh -#default for the beagleboard-xM -CONSOLE=tty02 -#verbosity -VERBOSE=3 -HZ=1000 -while getopts "c:v:?" c -do - case "$c" in - \?) - echo "Usage: $0 [-c consoletty] [-v level]" >&2 - exit 1 - ;; - c) - # genrate netbooting uEnv.txt - CONSOLE=$OPTARG - ;; - v) - # genrate netbooting uEnv.txt - VERBOSE=$OPTARG - ;; - h) - # system hz - HZ=$OPTARG - ;; - esac -done - - -echo console=$CONSOLE rootdevname=c0d0p1 verbose=$VERBOSE hz=$HZ diff --git a/releasetools/gen_uEnv.txt.sh b/releasetools/gen_uEnv.txt.sh index 6cd7552dc..6b09133f1 100755 --- a/releasetools/gen_uEnv.txt.sh +++ b/releasetools/gen_uEnv.txt.sh @@ -13,8 +13,7 @@ list="0x80200000 kernel.bin 0x86000000 mfs.elf 0x86800000 vm.elf 0x87000000 pfs.elf -0x87800000 init.elf -0x88000000 cmdline.txt" +0x87800000 init.elf" # # PREFIX for loading file over tftp to allow hosting multiple @@ -23,11 +22,17 @@ NETBOOT_PREFIX="" NETBOOT="no" BOOT="mmcbootcmd" -while getopts "p:n?" c +#default for the beagleboard-xM +CONSOLE=tty02 +#verbosity +VERBOSE=3 +HZ=1000 + +while getopts "c:v:h:p:n?" c do case "$c" in \?) - echo "Usage: $0 [-p netboot_prefix] -n" >&2 + echo "Usage: $0 [-p netboot_prefix] -n [-c consoletty] [-v level] " >&2 exit 1 ;; n) @@ -38,6 +43,16 @@ do p) NETBOOT_PREFIX=$OPTARG ;; + c) + CONSOLE=$OPTARG + ;; + v) + VERBOSE=$OPTARG + ;; + h) + # system hz + HZ=$OPTARG + ;; esac done @@ -61,14 +76,16 @@ fill_cmd() { echo "# Set the command to be executed" echo "uenvcmd=run $BOOT" +echo "bootargs=console=$CONSOLE rootdevname=c0d0p1 verbose=$VERBOSE hz=$HZ" +echo +echo 'bootminix=setenv bootargs \$bootargs board_name=\$board_name ; echo \$bootargs; go 0x80200000 \\\"$bootargs\\\"' echo -echo "# With cmdline/bootargs in cmdline.txt" -echo "mmcbootcmd=echo starting from MMC ; mmc part 0; mw.b 0x88000000 0 16384 $(fill_cmd "fatload mmc 0:1" "") ; dcache off ; icache off ; go 0x80200000" +echo "mmcbootcmd=echo starting from MMC ; mmc part 0; $(fill_cmd "fatload mmc 0:1" "") ; dcache off ; icache off ; run bootminix" echo echo "# Netbooting." echo "serverip=192.168.12.10" echo "ipaddr=192.168.12.62" echo "usbnet_devaddr=e8:03:9a:24:f9:10" echo "usbethaddr=e8:03:9a:24:f9:11" -echo "netbootcmd=echo starting from TFTP; mw.b 0x88000000 0 16384 $(fill_cmd "tftp" "$NETBOOT_PREFIX") ; dcache off ; icache off ; go 0x80200000" +echo "netbootcmd=echo starting from TFTP; $(fill_cmd "tftp" "$NETBOOT_PREFIX") ; dcache off ; icache off ; run bootminix" exit 0