4c0a9db94a
- extend ub_dev_read() and ub_dev_recv() so that the actual len and all error codes can be passed and processed properly; unify behaviour of these routines - introduce syscall general error code (API_ESYSC)
599 lines
13 KiB
C
599 lines
13 KiB
C
/*-
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* Copyright (c) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include "api_public.h"
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#include "glue.h"
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#define DEBUG
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#undef DEBUG
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#ifdef DEBUG
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#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt,##args); } while (0)
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#else
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#define debugf(fmt, args...)
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#endif
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/* Some random address used by U-Boot. */
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extern long uboot_address;
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/* crc32 stuff stolen from lib/libdisk/write_ia64_disk.c */
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static uint32_t crc32_tab[] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
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0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
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};
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static uint32_t
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crc32(const void *buf, size_t size)
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{
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const uint8_t *p;
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uint32_t crc;
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p = buf;
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crc = ~0U;
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while (size--)
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crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
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return (crc ^ ~0U);
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}
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static int
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valid_sig(struct api_signature *sig)
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{
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uint32_t checksum;
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struct api_signature s;
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if (sig == NULL)
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return (0);
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/*
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* Clear the checksum field (in the local copy) so as to calculate the
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* CRC with the same initial contents as at the time when the sig was
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* produced
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*/
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s = *sig;
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s.checksum = 0;
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checksum = crc32((void *)&s, sizeof(struct api_signature));
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if (checksum != sig->checksum)
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return (0);
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return (1);
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}
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/*
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* Searches for the U-Boot API signature
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*
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* returns 1/0 depending on found/not found result
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*/
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int
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api_search_sig(struct api_signature **sig)
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{
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unsigned char *sp, *spend;
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if (sig == NULL)
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return (0);
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if (uboot_address == 0)
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uboot_address = 255 * 1024 * 1024;
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sp = (void *)(uboot_address & ~0x000fffff);
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spend = sp + 0x00100000 - API_SIG_MAGLEN;
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while (sp < spend) {
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if (!bcmp(sp, API_SIG_MAGIC, API_SIG_MAGLEN)) {
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*sig = (struct api_signature *)sp;
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if (valid_sig(*sig))
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return (1);
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}
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sp += API_SIG_MAGLEN;
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}
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*sig = NULL;
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return (0);
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}
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/****************************************
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*
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* console
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*
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****************************************/
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int
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ub_getc(void)
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{
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int c;
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if (!syscall(API_GETC, NULL, (uint32_t)&c))
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return (-1);
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return (c);
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}
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int
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ub_tstc(void)
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{
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int t;
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if (!syscall(API_TSTC, NULL, (uint32_t)&t))
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return (-1);
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return (t);
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}
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void
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ub_putc(char c)
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{
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syscall(API_PUTC, NULL, (uint32_t)&c);
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}
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void
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ub_puts(const char *s)
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{
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syscall(API_PUTS, NULL, (uint32_t)s);
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}
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/****************************************
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*
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* system
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*
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****************************************/
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void
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ub_reset(void)
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{
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syscall(API_RESET, NULL);
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}
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static struct mem_region mr[UB_MAX_MR];
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static struct sys_info si;
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struct sys_info *
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ub_get_sys_info(void)
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{
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int err = 0;
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memset(&si, 0, sizeof(struct sys_info));
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si.mr = mr;
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si.mr_no = UB_MAX_MR;
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memset(&mr, 0, sizeof(mr));
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if (!syscall(API_GET_SYS_INFO, &err, (u_int32_t)&si))
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return (NULL);
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return ((err) ? NULL : &si);
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}
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/****************************************
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*
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* timing
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*
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****************************************/
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void
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ub_udelay(unsigned long usec)
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{
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syscall(API_UDELAY, NULL, &usec);
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}
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unsigned long
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ub_get_timer(unsigned long base)
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{
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unsigned long cur;
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if (!syscall(API_GET_TIMER, NULL, &cur, &base))
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return (0);
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return (cur);
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}
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/****************************************************************************
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*
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* devices
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*
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* Devices are identified by handles: numbers 0, 1, 2, ..., UB_MAX_DEV-1
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*
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***************************************************************************/
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static struct device_info devices[UB_MAX_DEV];
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struct device_info *
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ub_dev_get(int i)
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{
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return ((i < 0 || i >= UB_MAX_DEV) ? NULL : &devices[i]);
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}
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/*
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* Enumerates the devices: fills out device_info elements in the devices[]
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* array.
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*
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* returns: number of devices found
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*/
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int
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ub_dev_enum(void)
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{
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struct device_info *di;
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int n = 0;
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memset(&devices, 0, sizeof(struct device_info) * UB_MAX_DEV);
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di = &devices[0];
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if (!syscall(API_DEV_ENUM, NULL, di))
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return (0);
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while (di->cookie != NULL) {
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if (++n >= UB_MAX_DEV)
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break;
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/* take another device_info */
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di++;
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/* pass on the previous cookie */
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di->cookie = devices[n - 1].cookie;
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if (!syscall(API_DEV_ENUM, NULL, di))
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return (0);
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}
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return (n);
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}
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/*
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* handle: 0-based id of the device
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*
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* returns: 0 when OK, err otherwise
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*/
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int
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ub_dev_open(int handle)
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{
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struct device_info *di;
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int err = 0;
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if (handle < 0 || handle >= UB_MAX_DEV)
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return (API_EINVAL);
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di = &devices[handle];
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if (!syscall(API_DEV_OPEN, &err, di))
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return (-1);
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return (err);
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}
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int
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ub_dev_close(int handle)
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{
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struct device_info *di;
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if (handle < 0 || handle >= UB_MAX_DEV)
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return (API_EINVAL);
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di = &devices[handle];
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if (!syscall(API_DEV_CLOSE, NULL, di))
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return (-1);
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return (0);
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}
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/*
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* Validates device for read/write, it has to:
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*
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* - have sane handle
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* - be opened
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*
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* returns: 0/1 accordingly
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*/
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static int
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dev_valid(int handle)
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{
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if (handle < 0 || handle >= UB_MAX_DEV)
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return (0);
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if (devices[handle].state != DEV_STA_OPEN)
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return (0);
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return (1);
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}
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static int
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dev_stor_valid(int handle)
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{
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if (!dev_valid(handle))
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return (0);
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if (!(devices[handle].type & DEV_TYP_STOR))
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return (0);
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return (1);
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}
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int
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ub_dev_read(int handle, void *buf, lbasize_t len, lbastart_t start,
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lbasize_t *rlen)
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{
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struct device_info *di;
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lbasize_t act_len;
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int err = 0;
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if (!dev_stor_valid(handle))
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return (API_ENODEV);
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di = &devices[handle];
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if (!syscall(API_DEV_READ, &err, di, buf, &len, &start, &act_len))
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return (API_ESYSC);
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if (!err && rlen)
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*rlen = act_len;
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return (err);
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}
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static int
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dev_net_valid(int handle)
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{
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if (!dev_valid(handle))
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return (0);
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if (devices[handle].type != DEV_TYP_NET)
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return (0);
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return (1);
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}
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int
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ub_dev_recv(int handle, void *buf, int len, int *rlen)
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{
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struct device_info *di;
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int err = 0, act_len;
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if (!dev_net_valid(handle))
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return (API_ENODEV);
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di = &devices[handle];
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if (!syscall(API_DEV_READ, &err, di, buf, &len, &act_len))
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return (API_ESYSC);
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if (!err)
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*rlen = act_len;
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return (err);
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}
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int
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ub_dev_send(int handle, void *buf, int len)
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{
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struct device_info *di;
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int err = 0;
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if (!dev_net_valid(handle))
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return (API_ENODEV);
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di = &devices[handle];
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if (!syscall(API_DEV_WRITE, &err, di, buf, &len))
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return (API_ESYSC);
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return (err);
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}
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static char *
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ub_stor_type(int type)
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{
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if (type & DT_STOR_IDE)
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return ("IDE");
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if (type & DT_STOR_SCSI)
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return ("SCSI");
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if (type & DT_STOR_USB)
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return ("USB");
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if (type & DT_STOR_MMC);
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return ("MMC");
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return ("Unknown");
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}
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char *
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ub_mem_type(int flags)
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{
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switch(flags & 0x000F) {
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case MR_ATTR_FLASH:
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return ("FLASH");
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case MR_ATTR_DRAM:
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return ("DRAM");
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case MR_ATTR_SRAM:
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return ("SRAM");
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default:
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return ("Unknown");
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}
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}
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void
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ub_dump_di(int handle)
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{
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struct device_info *di = ub_dev_get(handle);
|
|
int i;
|
|
|
|
printf("device info (%d):\n", handle);
|
|
printf(" cookie\t= 0x%08x\n", (uint32_t)di->cookie);
|
|
printf(" type\t\t= 0x%08x\n", di->type);
|
|
|
|
if (di->type == DEV_TYP_NET) {
|
|
printf(" hwaddr\t= ");
|
|
for (i = 0; i < 6; i++)
|
|
printf("%02x ", di->di_net.hwaddr[i]);
|
|
|
|
printf("\n");
|
|
|
|
} else if (di->type & DEV_TYP_STOR) {
|
|
printf(" type\t\t= %s\n", ub_stor_type(di->type));
|
|
printf(" blk size\t\t= %ld\n", di->di_stor.block_size);
|
|
printf(" blk count\t\t= %ld\n", di->di_stor.block_count);
|
|
}
|
|
}
|
|
|
|
void
|
|
ub_dump_si(struct sys_info *si)
|
|
{
|
|
int i;
|
|
|
|
printf("sys info:\n");
|
|
printf(" clkbus\t= %ld MHz\n", si->clk_bus / 1000 / 1000);
|
|
printf(" clkcpu\t= %ld MHz\n", si->clk_cpu / 1000 / 1000);
|
|
printf(" bar\t\t= 0x%08lx\n", si->bar);
|
|
|
|
printf("---\n");
|
|
for (i = 0; i < si->mr_no; i++) {
|
|
if (si->mr[i].flags == 0)
|
|
break;
|
|
|
|
printf(" start\t= 0x%08lx\n", si->mr[i].start);
|
|
printf(" size\t= 0x%08lx\n", si->mr[i].size);
|
|
printf(" type\t= %s\n", ub_mem_type(si->mr[i].flags));
|
|
printf("---\n");
|
|
}
|
|
}
|
|
|
|
/****************************************
|
|
*
|
|
* env vars
|
|
*
|
|
****************************************/
|
|
|
|
char *
|
|
ub_env_get(const char *name)
|
|
{
|
|
char *value;
|
|
|
|
if (!syscall(API_ENV_GET, NULL, (uint32_t)name, (uint32_t)&value))
|
|
return (NULL);
|
|
|
|
return (value);
|
|
}
|
|
|
|
void
|
|
ub_env_set(const char *name, char *value)
|
|
{
|
|
|
|
syscall(API_ENV_SET, NULL, (uint32_t)name, (uint32_t)value);
|
|
}
|
|
|
|
|
|
static char env_name[256];
|
|
|
|
const char *
|
|
ub_env_enum(const char *last)
|
|
{
|
|
const char *env, *str;
|
|
int i;
|
|
|
|
env = NULL;
|
|
|
|
/*
|
|
* It's OK to pass only the name piece as last (and not the whole
|
|
* 'name=val' string), since the API_ENUM_ENV call uses envmatch()
|
|
* internally, which handles such case
|
|
*/
|
|
if (!syscall(API_ENV_ENUM, NULL, (uint32_t)last, (uint32_t)&env))
|
|
return (NULL);
|
|
|
|
if (!env)
|
|
/* no more env. variables to enumerate */
|
|
return (NULL);
|
|
#if 0
|
|
if (last && strncmp(env, last, strlen(last)) == 0);
|
|
/* error, trying to enumerate non existing env. variable */
|
|
return NULL;
|
|
#endif
|
|
|
|
/* next enumerated env var */
|
|
memset(env_name, 0, 256);
|
|
for (i = 0, str = env; *str != '=' && *str != '\0';)
|
|
env_name[i++] = *str++;
|
|
|
|
env_name[i] = '\0';
|
|
|
|
return (env_name);
|
|
}
|