+++ /dev/null
-/*
- * Broadcom Common Firmware Environment (CFE) support
- *
- * Copyright 2000, 2001, 2002
- * Broadcom Corporation. All rights reserved.
- *
- * Copyright (C) 2006 Michael Buesch
- *
- * Original Authors: Mitch Lichtenberg, Chris Demetriou
- *
- * This software is furnished under license and may be used and copied only
- * in accordance with the following terms and conditions. Subject to these
- * conditions, you may download, copy, install, use, modify and distribute
- * modified or unmodified copies of this software in source and/or binary
- * form. No title or ownership is transferred hereby.
- *
- * 1) Any source code used, modified or distributed must reproduce and
- * retain this copyright notice and list of conditions as they appear in
- * the source file.
- *
- * 2) No right is granted to use any trade name, trademark, or logo of
- * Broadcom Corporation. The "Broadcom Corporation" name may not be
- * used to endorse or promote products derived from this software
- * without the prior written permission of Broadcom Corporation.
- *
- * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
- * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
- * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-#include <asm/cfe.h>
-
-#include "cfe_private.h"
-
-
-static cfe_uint_t cfe_handle;
-static int (*cfe_trampoline)(long handle, long iocb);
-
-
-#include <linux/kernel.h>
-
-void __init cfe_setup(unsigned long fwarg0, unsigned long fwarg1,
- unsigned long fwarg2, unsigned long fwarg3)
-{
- if (fwarg3 == 0x80300000) {
- /* WRT54G workaround */
- fwarg3 = CFE_EPTSEAL;
- fwarg2 = 0xBFC00500;
- }
- if (fwarg3 != CFE_EPTSEAL) {
- /* We are not booted from CFE */
- return;
- }
- if (fwarg1 == 0) {
- /* We are on the boot CPU */
- cfe_handle = (cfe_uint_t)fwarg0;
- cfe_trampoline = CFE_TO_PTR(fwarg2);
- }
-}
-
-int cfe_vprintk(const char *fmt, va_list args)
-{
- static char buffer[1024];
- static DEFINE_SPINLOCK(lock);
- static const char pfx[] = "CFE-console: ";
- static const size_t pfx_len = sizeof(pfx) - 1;
- unsigned long flags;
- int len, cnt, pos;
- int handle;
- int res;
-
- if (!cfe_present())
- return -ENODEV;
-
- spin_lock_irqsave(&lock, flags);
- handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
- if (CFE_ISERR(handle)) {
- len = -EIO;
- goto out;
- }
- strcpy(buffer, pfx);
- len = vscnprintf(buffer + pfx_len,
- sizeof(buffer) - pfx_len - 2,
- fmt, args);
- len += pfx_len;
- /* The CFE console requires CR-LF line-ends.
- * Add a CR, if we only terminate lines with a LF.
- * This does only fix CR-LF at the end of the string.
- * So for multiple lines, use multiple cfe_vprintk calls.
- */
- if (len > 1 &&
- buffer[len - 1] == '\n' && buffer[len - 2] != '\r') {
- buffer[len - 1] = '\r';
- buffer[len] = '\n';
- len += 1;
- }
- cnt = len;
- pos = 0;
- while (cnt > 0) {
- res = cfe_write(handle, buffer + pos, len - pos);
- if (CFE_ISERR(res)) {
- len = -EIO;
- goto out;
- }
- cnt -= res;
- pos += res;
- }
-out:
- spin_unlock_irqrestore(&lock, flags);
-
- return len;
-}
-
-int cfe_printk(const char *fmt, ...)
-{
- va_list args;
- int res;
-
- va_start(args, fmt);
- res = cfe_vprintk(fmt, args);
- va_end(args);
-
- return res;
-}
-
-static int cfe_iocb_dispatch(struct cfe_iocb *iocb)
-{
- if (!cfe_present())
- return CFE_ERR_UNSUPPORTED;
- return cfe_trampoline((long)cfe_handle, (long)iocb);
-}
-
-int cfe_present(void)
-{
- return (cfe_trampoline != NULL);
-}
-
-int cfe_close(int handle)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_CLOSE;
- iocb.handle = handle;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_cpu_start(int cpu, void (*fn)(void), long sp, long gp, long a1)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_CPUCTL;
- iocb.psize = sizeof(struct cfe_iocb_cpuctl);
- iocb.cpuctl.number = cpu;
- iocb.cpuctl.command = CFE_CPU_CMD_START;
- iocb.cpuctl.gp = gp;
- iocb.cpuctl.sp = sp;
- iocb.cpuctl.a1 = a1;
- iocb.cpuctl.start_addr = (long)fn;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_cpu_stop(int cpu)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_CPUCTL;
- iocb.psize = sizeof(struct cfe_iocb_cpuctl);
- iocb.cpuctl.number = cpu;
- iocb.cpuctl.command = CFE_CPU_CMD_STOP;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_ENV_ENUM;
- iocb.psize = sizeof(struct cfe_iocb_envbuf);
- iocb.envbuf.index = idx;
- iocb.envbuf.name = PTR_TO_CFE(name);
- iocb.envbuf.name_len = namelen;
- iocb.envbuf.val = PTR_TO_CFE(val);
- iocb.envbuf.val_len = vallen;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_enumdev(int idx, char *name, int namelen)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
-
- iocb.fcode = CFE_CMD_DEV_ENUM;
- iocb.psize = sizeof(struct cfe_iocb_envbuf);
- iocb.envbuf.index = idx;
- iocb.envbuf.name = PTR_TO_CFE(name);
- iocb.envbuf.name_len = namelen;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_enummem(int idx, int flags, u64 *start, u64 *length,
- u64 *type)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
-
- iocb.fcode = CFE_CMD_FW_MEMENUM;
- iocb.flags = flags;
- iocb.psize = sizeof(struct cfe_iocb_meminfo);
- iocb.meminfo.index = idx;
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (!CFE_ISERR(iocb.status)) {
- *start = iocb.meminfo.addr;
- *length = iocb.meminfo.size;
- *type = iocb.meminfo.type;
- }
-
- return iocb.status;
-}
-
-int cfe_exit(int warm, int status)
-{
- struct cfe_iocb iocb;
- int err;
-
-printk("CFE REBOOT\n");
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_RESTART;
- if (warm)
- iocb.flags = CFE_FLG_WARMSTART;
- iocb.psize = sizeof(struct cfe_iocb_exitstat);
- iocb.exitstat.status = status;
-
-printk("CALL\n");
- err = cfe_iocb_dispatch(&iocb);
-printk("DONE\n");
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_flushcache(int flags)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_FLUSHCACHE;
- iocb.flags = flags;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_getdevinfo(char *name)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_GETINFO;
- iocb.psize = sizeof(struct cfe_iocb_buf);
- iocb.buffer.ptr = PTR_TO_CFE(name);
- iocb.buffer.length = strlen(name);
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.buffer.devflags;
-}
-
-int cfe_getenv(char *name, char *dest, int destlen)
-{
- struct cfe_iocb iocb;
- int err;
-
- dest[0] = '\0';
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_ENV_GET;
- iocb.psize = sizeof(struct cfe_iocb_envbuf);
- iocb.envbuf.name = PTR_TO_CFE(name);
- iocb.envbuf.name_len = strlen(name);
- iocb.envbuf.val = PTR_TO_CFE(dest);
- iocb.envbuf.val_len = destlen;
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_getfwinfo(struct cfe_fwinfo *info)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_GETINFO;
- iocb.psize = sizeof(struct cfe_iocb_fwinfo);
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return err;
-
- info->version = iocb.fwinfo.version;
- info->totalmem = iocb.fwinfo.totalmem;
- info->flags = iocb.fwinfo.flags;
- info->boardid = iocb.fwinfo.boardid;
- info->bootarea_va = iocb.fwinfo.bootarea_va;
- info->bootarea_pa = iocb.fwinfo.bootarea_pa;
- info->bootarea_size = iocb.fwinfo.bootarea_size;
-
- return iocb.status;
-}
-
-int cfe_getstdhandle(int handletype)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_GETHANDLE;
- iocb.flags = handletype;
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.handle;
-}
-
-int cfe_getticks(s64 *ticks)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_FW_GETTIME;
- iocb.psize = sizeof(struct cfe_iocb_time);
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (!CFE_ISERR(iocb.status))
- *ticks = iocb.time.ticks;
-
- return iocb.status;
-}
-
-int cfe_inpstat(int handle)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_INPSTAT;
- iocb.handle = handle;
- iocb.psize = sizeof(struct cfe_iocb_inpstat);
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.inpstat.status;
-}
-
-int cfe_ioctl(int handle, unsigned int ioctlnum,
- unsigned char *buffer, int length,
- int *retlen, u64 offset)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_IOCTL;
- iocb.handle = handle;
- iocb.psize = sizeof(struct cfe_iocb_buf);
- iocb.buffer.offset = offset;
- iocb.buffer.ioctlcmd = ioctlnum;
- iocb.buffer.ptr = PTR_TO_CFE(buffer);
- iocb.buffer.length = length;
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
- if (retlen)
- *retlen = iocb.buffer.retlen;
-
- return iocb.status;
-}
-
-int cfe_open(char *name)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_OPEN;
- iocb.psize = sizeof(struct cfe_iocb_buf);
- iocb.buffer.ptr = PTR_TO_CFE(name);
- iocb.buffer.length = strlen(name);
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.handle;
-}
-
-int cfe_read(int handle, unsigned char *buffer, int length)
-{
- return cfe_readblk(handle, 0, buffer, length);
-}
-
-int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_READ;
- iocb.handle = handle;
- iocb.psize = sizeof(struct cfe_iocb_buf);
- iocb.buffer.offset = offset;
- iocb.buffer.ptr = PTR_TO_CFE(buffer);
- iocb.buffer.length = length;
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.buffer.retlen;
-}
-
-int cfe_setenv(char *name, char *val)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_ENV_SET;
- iocb.psize = sizeof(struct cfe_iocb_envbuf);
- iocb.envbuf.name = PTR_TO_CFE(name);
- iocb.envbuf.name_len = strlen(name);
- iocb.envbuf.val = PTR_TO_CFE(val);
- iocb.envbuf.val_len = strlen(val);
-
- err = cfe_iocb_dispatch(&iocb);
-
- return (CFE_ISERR(err)) ? err : iocb.status;
-}
-
-int cfe_write(int handle, unsigned char *buffer, int length)
-{
- return cfe_writeblk(handle, 0, buffer, length);
-}
-
-int cfe_writeblk(int handle, s64 offset, unsigned char *buffer, int length)
-{
- struct cfe_iocb iocb;
- int err;
-
- memset(&iocb, 0, sizeof(iocb));
- iocb.fcode = CFE_CMD_DEV_WRITE;
- iocb.handle = handle;
- iocb.psize = sizeof(struct cfe_iocb_buf);
- iocb.buffer.offset = offset;
- iocb.buffer.ptr = PTR_TO_CFE(buffer);
- iocb.buffer.length = length;
-
- err = cfe_iocb_dispatch(&iocb);
- if (CFE_ISERR(err))
- return err;
- if (CFE_ISERR(iocb.status))
- return iocb.status;
-
- return iocb.buffer.retlen;
-}
projects / openwrt.git / blobdiff