diff options
Diffstat (limited to 'target/linux/brcm47xx/files-2.6.25/arch/mips/cfe/cfe.c')
-rw-r--r-- | target/linux/brcm47xx/files-2.6.25/arch/mips/cfe/cfe.c | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/files-2.6.25/arch/mips/cfe/cfe.c b/target/linux/brcm47xx/files-2.6.25/arch/mips/cfe/cfe.c new file mode 100644 index 000000000..6d16111e1 --- /dev/null +++ b/target/linux/brcm47xx/files-2.6.25/arch/mips/cfe/cfe.c @@ -0,0 +1,533 @@ +/* + * 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; +} |