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