1 files changed, 414 insertions, 0 deletions

diff --git a/arch/mips/fw/cfe/cfe_api.c b/arch/mips/fw/cfe/cfe_api.c
new file mode 100644
index 000000000..0c9c97ab2
--- /dev/null
+++ b/arch/mips/fw/cfe/cfe_api.c
@@ -0,0 +1,414 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
+ */
+
+/*
+ *
+ * Broadcom Common Firmware Environment (CFE)
+ *
+ * This module contains device function stubs (small routines to
+ * call the standard "iocb" interface entry point to CFE).
+ * There should be one routine here per iocb function call.
+ *
+ * Authors:  Mitch Lichtenberg, Chris Demetriou
+ */
+
+#include <asm/fw/cfe/cfe_api.h>
+#include "cfe_api_int.h"
+
+/* Cast from a native pointer to a cfe_xptr_t and back.  */
+#define XPTR_FROM_NATIVE(n)     ((cfe_xptr_t) (intptr_t) (n))
+#define NATIVE_FROM_XPTR(x)     ((void *) (intptr_t) (x))
+
+int cfe_iocb_dispatch(struct cfe_xiocb *xiocb);
+
+/*
+ * Declare the dispatch function with args of "intptr_t".
+ * This makes sure whatever model we're compiling in
+ * puts the pointers in a single register.  For example,
+ * combining -mlong64 and -mips1 or -mips2 would lead to
+ * trouble, since the handle and IOCB pointer will be
+ * passed in two registers each, and CFE expects one.
+ */
+
+static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb);
+static u64 cfe_handle;
+
+int cfe_init(u64 handle, u64 ept)
+{
+        cfe_dispfunc = NATIVE_FROM_XPTR(ept);
+        cfe_handle = handle;
+        return 0;
+}
+
+int cfe_iocb_dispatch(struct cfe_xiocb * xiocb)
+{
+        if (!cfe_dispfunc)
+                return -1;
+        return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
+}
+
+int cfe_close(int handle)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = handle;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = 0;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+
+}
+
+int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
+        xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
+        xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START;
+        xiocb.plist.xiocb_cpuctl.gp_val = gp;
+        xiocb.plist.xiocb_cpuctl.sp_val = sp;
+        xiocb.plist.xiocb_cpuctl.a1_val = a1;
+        xiocb.plist.xiocb_cpuctl.start_addr = (long) fn;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_cpu_stop(int cpu)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
+        xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
+        xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
+        xiocb.plist.xiocb_envbuf.enum_idx = idx;
+        xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
+        xiocb.plist.xiocb_envbuf.name_length = namelen;
+        xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
+        xiocb.plist.xiocb_envbuf.val_length = vallen;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int
+cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = flags;
+        xiocb.xiocb_psize = sizeof(struct xiocb_meminfo);
+        xiocb.plist.xiocb_meminfo.mi_idx = idx;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+
+        *start = xiocb.plist.xiocb_meminfo.mi_addr;
+        *length = xiocb.plist.xiocb_meminfo.mi_size;
+        *type = xiocb.plist.xiocb_meminfo.mi_type;
+
+        return 0;
+}
+
+int cfe_exit(int warm, int status)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_RESTART;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_exitstat);
+        xiocb.plist.xiocb_exitstat.status = status;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_flushcache(int flg)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = flg;
+        xiocb.xiocb_psize = 0;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_getdevinfo(char *name)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
+        xiocb.plist.xiocb_buffer.buf_offset = 0;
+        xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
+        xiocb.plist.xiocb_buffer.buf_length = strlen(name);
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.plist.xiocb_buffer.buf_ioctlcmd;
+}
+
+int cfe_getenv(char *name, char *dest, int destlen)
+{
+        struct cfe_xiocb xiocb;
+
+        *dest = 0;
+
+        xiocb.xiocb_fcode = CFE_CMD_ENV_GET;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
+        xiocb.plist.xiocb_envbuf.enum_idx = 0;
+        xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
+        xiocb.plist.xiocb_envbuf.name_length = strlen(name);
+        xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest);
+        xiocb.plist.xiocb_envbuf.val_length = destlen;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_getfwinfo(cfe_fwinfo_t * info)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_fwinfo);
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+
+        info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version;
+        info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem;
+        info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags;
+        info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid;
+        info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va;
+        info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa;
+        info->fwi_bootarea_size =
+            xiocb.plist.xiocb_fwinfo.fwi_bootarea_size;
+
+        return 0;
+}
+
+int cfe_getstdhandle(int flg)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = flg;
+        xiocb.xiocb_psize = 0;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.xiocb_handle;
+}
+
+int64_t
+cfe_getticks(void)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_time);
+        xiocb.plist.xiocb_time.ticks = 0;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.plist.xiocb_time.ticks;
+
+}
+
+int cfe_inpstat(int handle)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = handle;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_inpstat);
+        xiocb.plist.xiocb_inpstat.inp_status = 0;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.plist.xiocb_inpstat.inp_status;
+}
+
+int
+cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
+          int length, int *retlen, u64 offset)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = handle;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
+        xiocb.plist.xiocb_buffer.buf_offset = offset;
+        xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum;
+        xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
+        xiocb.plist.xiocb_buffer.buf_length = length;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (retlen)
+                *retlen = xiocb.plist.xiocb_buffer.buf_retlen;
+        return xiocb.xiocb_status;
+}
+
+int cfe_open(char *name)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
+        xiocb.plist.xiocb_buffer.buf_offset = 0;
+        xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
+        xiocb.plist.xiocb_buffer.buf_length = strlen(name);
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.xiocb_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_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = handle;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
+        xiocb.plist.xiocb_buffer.buf_offset = offset;
+        xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
+        xiocb.plist.xiocb_buffer.buf_length = length;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.plist.xiocb_buffer.buf_retlen;
+}
+
+int cfe_setenv(char *name, char *val)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = 0;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
+        xiocb.plist.xiocb_envbuf.enum_idx = 0;
+        xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
+        xiocb.plist.xiocb_envbuf.name_length = strlen(name);
+        xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
+        xiocb.plist.xiocb_envbuf.val_length = strlen(val);
+
+        cfe_iocb_dispatch(&xiocb);
+
+        return xiocb.xiocb_status;
+}
+
+int cfe_write(int handle, const char *buffer, int length)
+{
+        return cfe_writeblk(handle, 0, buffer, length);
+}
+
+int cfe_writeblk(int handle, s64 offset, const char *buffer, int length)
+{
+        struct cfe_xiocb xiocb;
+
+        xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
+        xiocb.xiocb_status = 0;
+        xiocb.xiocb_handle = handle;
+        xiocb.xiocb_flags = 0;
+        xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
+        xiocb.plist.xiocb_buffer.buf_offset = offset;
+        xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
+        xiocb.plist.xiocb_buffer.buf_length = length;
+
+        cfe_iocb_dispatch(&xiocb);
+
+        if (xiocb.xiocb_status < 0)
+                return xiocb.xiocb_status;
+        return xiocb.plist.xiocb_buffer.buf_retlen;
+}