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-rw-r--r--arch/mips/fw/arc/Makefile15
-rw-r--r--arch/mips/fw/arc/arc_con.c54
-rw-r--r--arch/mips/fw/arc/cmdline.c110
-rw-r--r--arch/mips/fw/arc/env.c21
-rw-r--r--arch/mips/fw/arc/file.c25
-rw-r--r--arch/mips/fw/arc/identify.c111
-rw-r--r--arch/mips/fw/arc/init.c51
-rw-r--r--arch/mips/fw/arc/memory.c192
-rw-r--r--arch/mips/fw/arc/misc.c36
-rw-r--r--arch/mips/fw/arc/promlib.c61
-rw-r--r--arch/mips/fw/cfe/Makefile6
-rw-r--r--arch/mips/fw/cfe/cfe_api.c480
-rw-r--r--arch/mips/fw/cfe/cfe_api_int.h135
-rw-r--r--arch/mips/fw/lib/Makefile8
-rw-r--r--arch/mips/fw/lib/call_o32.S104
-rw-r--r--arch/mips/fw/lib/cmdline.c103
-rw-r--r--arch/mips/fw/sni/Makefile6
-rw-r--r--arch/mips/fw/sni/sniprom.c149
18 files changed, 1667 insertions, 0 deletions
diff --git a/arch/mips/fw/arc/Makefile b/arch/mips/fw/arc/Makefile
new file mode 100644
index 0000000000..64d685efcc
--- /dev/null
+++ b/arch/mips/fw/arc/Makefile
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the ARC prom monitor library routines under Linux.
+#
+
+ifdef CONFIG_ARC_CMDLINE_ONLY
+lib-y += cmdline.o
+else
+lib-y += cmdline.o env.o file.o identify.o init.o \
+ misc.o
+endif
+
+lib-$(CONFIG_ARC_MEMORY) += memory.o
+lib-$(CONFIG_ARC_CONSOLE) += arc_con.o
+lib-$(CONFIG_ARC_PROMLIB) += promlib.o
diff --git a/arch/mips/fw/arc/arc_con.c b/arch/mips/fw/arc/arc_con.c
new file mode 100644
index 0000000000..7fdce236b2
--- /dev/null
+++ b/arch/mips/fw/arc/arc_con.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Wrap-around code for a console using the
+ * ARC io-routines.
+ *
+ * Copyright (c) 1998 Harald Koerfgen
+ * Copyright (c) 2001 Ralf Baechle
+ * Copyright (c) 2002 Thiemo Seufer
+ */
+#include <linux/tty.h>
+#include <linux/major.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/fs.h>
+#include <asm/setup.h>
+#include <asm/sgialib.h>
+
+static void prom_console_write(struct console *co, const char *s,
+ unsigned count)
+{
+ /* Do each character */
+ while (count--) {
+ if (*s == '\n')
+ prom_putchar('\r');
+ prom_putchar(*s++);
+ }
+}
+
+static int prom_console_setup(struct console *co, char *options)
+{
+ if (prom_flags & PROM_FLAG_USE_AS_CONSOLE)
+ return 0;
+ return -ENODEV;
+}
+
+static struct console arc_cons = {
+ .name = "arc",
+ .write = prom_console_write,
+ .setup = prom_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+/*
+ * Register console.
+ */
+
+static int __init arc_console_init(void)
+{
+ register_console(&arc_cons);
+
+ return 0;
+}
+console_initcall(arc_console_init);
diff --git a/arch/mips/fw/arc/cmdline.c b/arch/mips/fw/arc/cmdline.c
new file mode 100644
index 0000000000..155c5e9117
--- /dev/null
+++ b/arch/mips/fw/arc/cmdline.c
@@ -0,0 +1,110 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * cmdline.c: Kernel command line creation using ARCS argc/argv.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/bug.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/sgialib.h>
+#include <asm/bootinfo.h>
+
+#undef DEBUG_CMDLINE
+
+/*
+ * A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
+ * These macro take care of sign extension.
+ */
+#define prom_argv(index) ((char *) (long)argv[(index)])
+
+static char *ignored[] = {
+ "ConsoleIn=",
+ "ConsoleOut=",
+ "SystemPartition=",
+ "OSLoader=",
+ "OSLoadPartition=",
+ "OSLoadFilename=",
+ "OSLoadOptions="
+};
+
+static char *used_arc[][2] = {
+ { "OSLoadPartition=", "root=" },
+ { "OSLoadOptions=", "" }
+};
+
+static char __init *move_firmware_args(int argc, LONG *argv, char *cp)
+{
+ char *s;
+ int actr, i;
+
+ actr = 1; /* Always ignore argv[0] */
+
+ while (actr < argc) {
+ for(i = 0; i < ARRAY_SIZE(used_arc); i++) {
+ int len = strlen(used_arc[i][0]);
+
+ if (!strncmp(prom_argv(actr), used_arc[i][0], len)) {
+ /* Ok, we want it. First append the replacement... */
+ strcat(cp, used_arc[i][1]);
+ cp += strlen(used_arc[i][1]);
+ /* ... and now the argument */
+ s = strchr(prom_argv(actr), '=');
+ if (s) {
+ s++;
+ strcpy(cp, s);
+ cp += strlen(s);
+ }
+ *cp++ = ' ';
+ break;
+ }
+ }
+ actr++;
+ }
+
+ return cp;
+}
+
+void __init prom_init_cmdline(int argc, LONG *argv)
+{
+ char *cp;
+ int actr, i;
+
+ actr = 1; /* Always ignore argv[0] */
+
+ cp = arcs_cmdline;
+ /*
+ * Move ARC variables to the beginning to make sure they can be
+ * overridden by later arguments.
+ */
+ cp = move_firmware_args(argc, argv, cp);
+
+ while (actr < argc) {
+ for (i = 0; i < ARRAY_SIZE(ignored); i++) {
+ int len = strlen(ignored[i]);
+
+ if (!strncmp(prom_argv(actr), ignored[i], len))
+ goto pic_cont;
+ }
+ /* Ok, we want it. */
+ strcpy(cp, prom_argv(actr));
+ cp += strlen(prom_argv(actr));
+ *cp++ = ' ';
+
+ pic_cont:
+ actr++;
+ }
+
+ if (cp != arcs_cmdline) /* get rid of trailing space */
+ --cp;
+ *cp = '\0';
+
+#ifdef DEBUG_CMDLINE
+ printk(KERN_DEBUG "prom cmdline: %s\n", arcs_cmdline);
+#endif
+}
diff --git a/arch/mips/fw/arc/env.c b/arch/mips/fw/arc/env.c
new file mode 100644
index 0000000000..02407a7bb3
--- /dev/null
+++ b/arch/mips/fw/arc/env.c
@@ -0,0 +1,21 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * env.c: ARCS environment variable routines.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/fw/arc/types.h>
+#include <asm/sgialib.h>
+
+PCHAR __init
+ArcGetEnvironmentVariable(CHAR *name)
+{
+ return (CHAR *) ARC_CALL1(get_evar, name);
+}
diff --git a/arch/mips/fw/arc/file.c b/arch/mips/fw/arc/file.c
new file mode 100644
index 0000000000..b0d8535c80
--- /dev/null
+++ b/arch/mips/fw/arc/file.c
@@ -0,0 +1,25 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * ARC firmware interface.
+ *
+ * Copyright (C) 1994, 1995, 1996, 1999 Ralf Baechle
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ */
+
+#include <asm/fw/arc/types.h>
+#include <asm/sgialib.h>
+
+LONG
+ArcRead(ULONG FileID, VOID *Buffer, ULONG N, ULONG *Count)
+{
+ return ARC_CALL4(read, FileID, Buffer, N, Count);
+}
+
+LONG
+ArcWrite(ULONG FileID, PVOID Buffer, ULONG N, PULONG Count)
+{
+ return ARC_CALL4(write, FileID, Buffer, N, Count);
+}
diff --git a/arch/mips/fw/arc/identify.c b/arch/mips/fw/arc/identify.c
new file mode 100644
index 0000000000..5527e0f540
--- /dev/null
+++ b/arch/mips/fw/arc/identify.c
@@ -0,0 +1,111 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * identify.c: identify machine by looking up system identifier
+ *
+ * Copyright (C) 1998 Thomas Bogendoerfer
+ *
+ * This code is based on arch/mips/sgi/kernel/system.c, which is
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/bug.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+
+#include <asm/sgialib.h>
+#include <asm/bootinfo.h>
+
+struct smatch {
+ char *arcname;
+ char *liname;
+ int flags;
+};
+
+static struct smatch mach_table[] = {
+ {
+ .arcname = "SGI-IP22",
+ .liname = "SGI Indy",
+ .flags = PROM_FLAG_ARCS,
+ }, {
+ .arcname = "SGI-IP28",
+ .liname = "SGI IP28",
+ .flags = PROM_FLAG_ARCS,
+ }, {
+ .arcname = "SGI-IP30",
+ .liname = "SGI Octane",
+ .flags = PROM_FLAG_ARCS,
+ }, {
+ .arcname = "SGI-IP32",
+ .liname = "SGI O2",
+ .flags = PROM_FLAG_ARCS,
+ }, {
+ .arcname = "Microsoft-Jazz",
+ .liname = "Jazz MIPS_Magnum_4000",
+ .flags = 0,
+ }, {
+ .arcname = "PICA-61",
+ .liname = "Jazz Acer_PICA_61",
+ .flags = 0,
+ }, {
+ .arcname = "RM200PCI",
+ .liname = "SNI RM200_PCI",
+ .flags = PROM_FLAG_DONT_FREE_TEMP,
+ }, {
+ .arcname = "RM200PCI-R5K",
+ .liname = "SNI RM200_PCI-R5K",
+ .flags = PROM_FLAG_DONT_FREE_TEMP,
+ }
+};
+
+int prom_flags;
+
+static struct smatch * __init string_to_mach(const char *s)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
+ if (!strcmp(s, mach_table[i].arcname))
+ return &mach_table[i];
+ }
+
+ panic("Yeee, could not determine architecture type <%s>", s);
+}
+
+char *system_type;
+
+const char *get_system_type(void)
+{
+ return system_type;
+}
+
+static pcomponent * __init ArcGetChild(pcomponent *Current)
+{
+ return (pcomponent *) ARC_CALL1(child_component, Current);
+}
+
+void __init prom_identify_arch(void)
+{
+ pcomponent *p;
+ struct smatch *mach;
+ const char *iname;
+
+ /*
+ * The root component tells us what machine architecture we have here.
+ */
+ p = ArcGetChild(PROM_NULL_COMPONENT);
+ if (p == NULL) {
+ iname = "Unknown";
+ } else
+ iname = (char *) (long) p->iname;
+
+ printk("ARCH: %s\n", iname);
+ mach = string_to_mach(iname);
+ system_type = mach->liname;
+
+ prom_flags = mach->flags;
+}
diff --git a/arch/mips/fw/arc/init.c b/arch/mips/fw/arc/init.c
new file mode 100644
index 0000000000..f9d1dea9b2
--- /dev/null
+++ b/arch/mips/fw/arc/init.c
@@ -0,0 +1,51 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * PROM library initialisation code.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <asm/bootinfo.h>
+#include <asm/sgialib.h>
+#include <asm/smp-ops.h>
+
+#undef DEBUG_PROM_INIT
+
+/* Master romvec interface. */
+struct linux_romvec *romvec;
+
+#if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
+/* stack for calling 32bit ARC prom */
+u64 o32_stk[4096];
+#endif
+
+void __init prom_init(void)
+{
+ PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
+
+ romvec = ROMVECTOR;
+
+ if (pb->magic != 0x53435241) {
+ printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
+ (unsigned long) pb->magic);
+ while(1)
+ ;
+ }
+
+ prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
+ prom_identify_arch();
+ printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
+ pb->ver, pb->rev);
+ prom_meminit();
+
+#ifdef DEBUG_PROM_INIT
+ pr_info("Press a key to reboot\n");
+ ArcRead(0, &c, 1, &cnt);
+ ArcEnterInteractiveMode();
+#endif
+}
diff --git a/arch/mips/fw/arc/memory.c b/arch/mips/fw/arc/memory.c
new file mode 100644
index 0000000000..66188739f5
--- /dev/null
+++ b/arch/mips/fw/arc/memory.c
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * memory.c: PROM library functions for acquiring/using memory descriptors
+ * given to us from the ARCS firmware.
+ *
+ * Copyright (C) 1996 by David S. Miller
+ * Copyright (C) 1999, 2000, 2001 by Ralf Baechle
+ * Copyright (C) 1999, 2000 by Silicon Graphics, Inc.
+ *
+ * PROM library functions for acquiring/using memory descriptors given to us
+ * from the ARCS firmware. This is only used when CONFIG_ARC_MEMORY is set
+ * because on some machines like SGI IP27 the ARC memory configuration data
+ * completely bogus and alternate easier to use mechanisms are available.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/memblock.h>
+#include <linux/swap.h>
+
+#include <asm/sgialib.h>
+#include <asm/page.h>
+#include <asm/bootinfo.h>
+
+#undef DEBUG
+
+#define MAX_PROM_MEM 5
+static phys_addr_t prom_mem_base[MAX_PROM_MEM] __initdata;
+static phys_addr_t prom_mem_size[MAX_PROM_MEM] __initdata;
+static unsigned int nr_prom_mem __initdata;
+
+/*
+ * For ARC firmware memory functions the unit of measuring memory is always
+ * a 4k page of memory
+ */
+#define ARC_PAGE_SHIFT 12
+
+struct linux_mdesc * __init ArcGetMemoryDescriptor(struct linux_mdesc *Current)
+{
+ return (struct linux_mdesc *) ARC_CALL1(get_mdesc, Current);
+}
+
+#ifdef DEBUG /* convenient for debugging */
+static char *arcs_mtypes[8] = {
+ "Exception Block",
+ "ARCS Romvec Page",
+ "Free/Contig RAM",
+ "Generic Free RAM",
+ "Bad Memory",
+ "Standalone Program Pages",
+ "ARCS Temp Storage Area",
+ "ARCS Permanent Storage Area"
+};
+
+static char *arc_mtypes[8] = {
+ "Exception Block",
+ "SystemParameterBlock",
+ "FreeMemory",
+ "Bad Memory",
+ "LoadedProgram",
+ "FirmwareTemporary",
+ "FirmwarePermanent",
+ "FreeContiguous"
+};
+#define mtypes(a) (prom_flags & PROM_FLAG_ARCS) ? arcs_mtypes[a.arcs] \
+ : arc_mtypes[a.arc]
+#endif
+
+enum {
+ mem_free, mem_prom_used, mem_reserved
+};
+
+static inline int memtype_classify_arcs(union linux_memtypes type)
+{
+ switch (type.arcs) {
+ case arcs_fcontig:
+ case arcs_free:
+ return mem_free;
+ case arcs_atmp:
+ return mem_prom_used;
+ case arcs_eblock:
+ case arcs_rvpage:
+ case arcs_bmem:
+ case arcs_prog:
+ case arcs_aperm:
+ return mem_reserved;
+ default:
+ BUG();
+ }
+ while(1); /* Nuke warning. */
+}
+
+static inline int memtype_classify_arc(union linux_memtypes type)
+{
+ switch (type.arc) {
+ case arc_free:
+ case arc_fcontig:
+ return mem_free;
+ case arc_atmp:
+ return mem_prom_used;
+ case arc_eblock:
+ case arc_rvpage:
+ case arc_bmem:
+ case arc_prog:
+ case arc_aperm:
+ return mem_reserved;
+ default:
+ BUG();
+ }
+ while(1); /* Nuke warning. */
+}
+
+static int __init prom_memtype_classify(union linux_memtypes type)
+{
+ if (prom_flags & PROM_FLAG_ARCS) /* SGI is ``different'' ... */
+ return memtype_classify_arcs(type);
+
+ return memtype_classify_arc(type);
+}
+
+void __weak __init prom_meminit(void)
+{
+ struct linux_mdesc *p;
+
+#ifdef DEBUG
+ int i = 0;
+
+ printk("ARCS MEMORY DESCRIPTOR dump:\n");
+ p = ArcGetMemoryDescriptor(PROM_NULL_MDESC);
+ while(p) {
+ printk("[%d,%p]: base<%08lx> pages<%08lx> type<%s>\n",
+ i, p, p->base, p->pages, mtypes(p->type));
+ p = ArcGetMemoryDescriptor(p);
+ i++;
+ }
+#endif
+
+ nr_prom_mem = 0;
+ p = PROM_NULL_MDESC;
+ while ((p = ArcGetMemoryDescriptor(p))) {
+ unsigned long base, size;
+ long type;
+
+ base = p->base << ARC_PAGE_SHIFT;
+ size = p->pages << ARC_PAGE_SHIFT;
+ type = prom_memtype_classify(p->type);
+
+ /* ignore mirrored RAM on IP28/IP30 */
+ if (base < PHYS_OFFSET)
+ continue;
+
+ memblock_add(base, size);
+
+ if (type == mem_reserved)
+ memblock_reserve(base, size);
+
+ if (type == mem_prom_used) {
+ memblock_reserve(base, size);
+ if (nr_prom_mem >= 5) {
+ pr_err("Too many ROM DATA regions");
+ continue;
+ }
+ prom_mem_base[nr_prom_mem] = base;
+ prom_mem_size[nr_prom_mem] = size;
+ nr_prom_mem++;
+ }
+ }
+}
+
+void __weak __init prom_cleanup(void)
+{
+}
+
+void __init prom_free_prom_memory(void)
+{
+ int i;
+
+ if (prom_flags & PROM_FLAG_DONT_FREE_TEMP)
+ return;
+
+ for (i = 0; i < nr_prom_mem; i++) {
+ free_init_pages("prom memory",
+ prom_mem_base[i], prom_mem_base[i] + prom_mem_size[i]);
+ }
+ /*
+ * at this point it isn't safe to call PROM functions
+ * give platforms a way to do PROM cleanups
+ */
+ prom_cleanup();
+}
diff --git a/arch/mips/fw/arc/misc.c b/arch/mips/fw/arc/misc.c
new file mode 100644
index 0000000000..d5b2d59013
--- /dev/null
+++ b/arch/mips/fw/arc/misc.c
@@ -0,0 +1,36 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Miscellaneous ARCS PROM routines.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ */
+#include <linux/compiler.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/irqflags.h>
+
+#include <asm/bcache.h>
+
+#include <asm/fw/arc/types.h>
+#include <asm/sgialib.h>
+#include <asm/bootinfo.h>
+
+VOID __noreturn
+ArcEnterInteractiveMode(VOID)
+{
+ bc_disable();
+ local_irq_disable();
+ ARC_CALL0(imode);
+
+ unreachable();
+}
+
+DISPLAY_STATUS * __init ArcGetDisplayStatus(ULONG FileID)
+{
+ return (DISPLAY_STATUS *) ARC_CALL1(GetDisplayStatus, FileID);
+}
diff --git a/arch/mips/fw/arc/promlib.c b/arch/mips/fw/arc/promlib.c
new file mode 100644
index 0000000000..5e9e840a93
--- /dev/null
+++ b/arch/mips/fw/arc/promlib.c
@@ -0,0 +1,61 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@sgi.com)
+ * Compatibility with board caches, Ulf Carlsson
+ */
+#include <linux/kernel.h>
+#include <asm/sgialib.h>
+#include <asm/bcache.h>
+#include <asm/setup.h>
+
+#if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
+/*
+ * For 64bit kernels working with a 32bit ARC PROM pointer arguments
+ * for ARC calls need to reside in CKEG0/1. But as soon as the kernel
+ * switches to it's first kernel thread stack is set to an address in
+ * XKPHYS, so anything on stack can't be used anymore. This is solved
+ * by using a * static declartion variables are put into BSS, which is
+ * linked to a CKSEG0 address. Since this is only used on UP platforms
+ * there is not spinlock needed
+ */
+#define O32_STATIC static
+#else
+#define O32_STATIC
+#endif
+
+/*
+ * IP22 boardcache is not compatible with board caches. Thus we disable it
+ * during romvec action. Since r4xx0.c is always compiled and linked with your
+ * kernel, this shouldn't cause any harm regardless what MIPS processor you
+ * have.
+ *
+ * The ARC write and read functions seem to interfere with the serial lines
+ * in some way. You should be careful with them.
+ */
+
+void prom_putchar(char c)
+{
+ O32_STATIC ULONG cnt;
+ O32_STATIC CHAR it;
+
+ it = c;
+
+ bc_disable();
+ ArcWrite(1, &it, 1, &cnt);
+ bc_enable();
+}
+
+char prom_getchar(void)
+{
+ O32_STATIC ULONG cnt;
+ O32_STATIC CHAR c;
+
+ bc_disable();
+ ArcRead(0, &c, 1, &cnt);
+ bc_enable();
+
+ return c;
+}
diff --git a/arch/mips/fw/cfe/Makefile b/arch/mips/fw/cfe/Makefile
new file mode 100644
index 0000000000..55b77633e4
--- /dev/null
+++ b/arch/mips/fw/cfe/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for the Broadcom Common Firmware Environment support
+#
+
+lib-y += cfe_api.o
diff --git a/arch/mips/fw/cfe/cfe_api.c b/arch/mips/fw/cfe/cfe_api.c
new file mode 100644
index 0000000000..dcdfd962db
--- /dev/null
+++ b/arch/mips/fw/cfe/cfe_api.c
@@ -0,0 +1,480 @@
+// 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 <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <asm/mipsregs.h>
+#include <asm/fw/cfe/cfe_api.h>
+#include "cfe_api_int.h"
+
+unsigned long __initdata cfe_seal;
+
+/* 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;
+}
+
+void __init cfe_die(char *fmt, ...)
+{
+ unsigned int prid, __maybe_unused rev;
+ char msg[128];
+ va_list ap;
+ int handle;
+ unsigned int count;
+
+ va_start(ap, fmt);
+ vsprintf(msg, fmt, ap);
+ strcat(msg, "\r\n");
+
+ if (cfe_seal != CFE_EPTSEAL)
+ goto no_cfe;
+
+ prid = read_c0_prid();
+ if ((prid & PRID_COMP_MASK) != PRID_COMP_BROADCOM)
+ goto no_cfe;
+
+ rev = prid & PRID_REV_MASK;
+
+ /* disable XKS01 so that CFE can access the registers */
+ switch (prid & PRID_IMP_MASK) {
+#ifdef CONFIG_CPU_BMIPS4380
+ case PRID_IMP_BMIPS43XX:
+ if (rev >= PRID_REV_BMIPS4380_LO &&
+ rev <= PRID_REV_BMIPS4380_HI)
+ __write_32bit_c0_register($22, 3,
+ __read_32bit_c0_register($22, 3) & ~BIT(12));
+ break;
+#endif
+#ifdef CONFIG_CPU_BMIPS5000
+ case PRID_IMP_BMIPS5000:
+ case PRID_IMP_BMIPS5200:
+ __write_32bit_c0_register($22, 5,
+ __read_32bit_c0_register($22, 5) & ~BIT(8));
+ break;
+#endif
+ default:
+ break;
+ }
+
+ handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
+ if (handle < 0)
+ goto no_cfe;
+
+ cfe_write(handle, msg, strlen(msg));
+
+ for (count = 0; count < 0x7fffffff; count++)
+ mb();
+ cfe_exit(0, 1);
+ while (1)
+ ;
+
+no_cfe:
+ /* probably won't print anywhere useful */
+ panic("%s", msg);
+
+ va_end(ap);
+}
diff --git a/arch/mips/fw/cfe/cfe_api_int.h b/arch/mips/fw/cfe/cfe_api_int.h
new file mode 100644
index 0000000000..61a665d443
--- /dev/null
+++ b/arch/mips/fw/cfe/cfe_api_int.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
+ */
+#ifndef CFE_API_INT_H
+#define CFE_API_INT_H
+
+/*
+ * Constants.
+ */
+#define CFE_CMD_FW_GETINFO 0
+#define CFE_CMD_FW_RESTART 1
+#define CFE_CMD_FW_BOOT 2
+#define CFE_CMD_FW_CPUCTL 3
+#define CFE_CMD_FW_GETTIME 4
+#define CFE_CMD_FW_MEMENUM 5
+#define CFE_CMD_FW_FLUSHCACHE 6
+
+#define CFE_CMD_DEV_GETHANDLE 9
+#define CFE_CMD_DEV_ENUM 10
+#define CFE_CMD_DEV_OPEN 11
+#define CFE_CMD_DEV_INPSTAT 12
+#define CFE_CMD_DEV_READ 13
+#define CFE_CMD_DEV_WRITE 14
+#define CFE_CMD_DEV_IOCTL 15
+#define CFE_CMD_DEV_CLOSE 16
+#define CFE_CMD_DEV_GETINFO 17
+
+#define CFE_CMD_ENV_ENUM 20
+#define CFE_CMD_ENV_GET 22
+#define CFE_CMD_ENV_SET 23
+#define CFE_CMD_ENV_DEL 24
+
+#define CFE_CMD_MAX 32
+
+#define CFE_CMD_VENDOR_USE 0x8000 /* codes above this are for customer use */
+
+/*
+ * Structures.
+ */
+
+/* eeek, signed "pointers" */
+typedef s64 cfe_xptr_t;
+
+struct xiocb_buffer {
+ u64 buf_offset; /* offset on device (bytes) */
+ cfe_xptr_t buf_ptr; /* pointer to a buffer */
+ u64 buf_length; /* length of this buffer */
+ u64 buf_retlen; /* returned length (for read ops) */
+ u64 buf_ioctlcmd; /* IOCTL command (used only for IOCTLs) */
+};
+
+struct xiocb_inpstat {
+ u64 inp_status; /* 1 means input available */
+};
+
+struct xiocb_envbuf {
+ s64 enum_idx; /* 0-based enumeration index */
+ cfe_xptr_t name_ptr; /* name string buffer */
+ s64 name_length; /* size of name buffer */
+ cfe_xptr_t val_ptr; /* value string buffer */
+ s64 val_length; /* size of value string buffer */
+};
+
+struct xiocb_cpuctl {
+ u64 cpu_number; /* cpu number to control */
+ u64 cpu_command; /* command to issue to CPU */
+ u64 start_addr; /* CPU start address */
+ u64 gp_val; /* starting GP value */
+ u64 sp_val; /* starting SP value */
+ u64 a1_val; /* starting A1 value */
+};
+
+struct xiocb_time {
+ s64 ticks; /* current time in ticks */
+};
+
+struct xiocb_exitstat{
+ s64 status;
+};
+
+struct xiocb_meminfo {
+ s64 mi_idx; /* 0-based enumeration index */
+ s64 mi_type; /* type of memory block */
+ u64 mi_addr; /* physical start address */
+ u64 mi_size; /* block size */
+};
+
+struct xiocb_fwinfo {
+ s64 fwi_version; /* major, minor, eco version */
+ s64 fwi_totalmem; /* total installed mem */
+ s64 fwi_flags; /* various flags */
+ s64 fwi_boardid; /* board ID */
+ s64 fwi_bootarea_va; /* VA of boot area */
+ s64 fwi_bootarea_pa; /* PA of boot area */
+ s64 fwi_bootarea_size; /* size of boot area */
+ s64 fwi_reserved1;
+ s64 fwi_reserved2;
+ s64 fwi_reserved3;
+};
+
+struct cfe_xiocb {
+ u64 xiocb_fcode; /* IOCB function code */
+ s64 xiocb_status; /* return status */
+ s64 xiocb_handle; /* file/device handle */
+ u64 xiocb_flags; /* flags for this IOCB */
+ u64 xiocb_psize; /* size of parameter list */
+ union {
+ /* buffer parameters */
+ struct xiocb_buffer xiocb_buffer;
+
+ /* input status parameters */
+ struct xiocb_inpstat xiocb_inpstat;
+
+ /* environment function parameters */
+ struct xiocb_envbuf xiocb_envbuf;
+
+ /* CPU control parameters */
+ struct xiocb_cpuctl xiocb_cpuctl;
+
+ /* timer parameters */
+ struct xiocb_time xiocb_time;
+
+ /* memory arena info parameters */
+ struct xiocb_meminfo xiocb_meminfo;
+
+ /* firmware information */
+ struct xiocb_fwinfo xiocb_fwinfo;
+
+ /* Exit Status */
+ struct xiocb_exitstat xiocb_exitstat;
+ } plist;
+};
+
+#endif /* CFE_API_INT_H */
diff --git a/arch/mips/fw/lib/Makefile b/arch/mips/fw/lib/Makefile
new file mode 100644
index 0000000000..cf9634548c
--- /dev/null
+++ b/arch/mips/fw/lib/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for generic prom monitor library routines under Linux.
+#
+
+lib-y += cmdline.o
+
+lib-$(CONFIG_64BIT) += call_o32.o
diff --git a/arch/mips/fw/lib/call_o32.S b/arch/mips/fw/lib/call_o32.S
new file mode 100644
index 0000000000..ee856709e0
--- /dev/null
+++ b/arch/mips/fw/lib/call_o32.S
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * O32 interface for the 64 (or N32) ABI.
+ *
+ * Copyright (C) 2002, 2014 Maciej W. Rozycki
+ */
+
+#include <asm/asm.h>
+#include <asm/regdef.h>
+
+/* O32 register size. */
+#define O32_SZREG 4
+/* Maximum number of arguments supported. Must be even! */
+#define O32_ARGC 32
+/* Number of static registers we save. */
+#define O32_STATC 11
+/* Argument area frame size. */
+#define O32_ARGSZ (O32_SZREG * O32_ARGC)
+/* Static register save area frame size. */
+#define O32_STATSZ (SZREG * O32_STATC)
+/* Stack pointer register save area frame size. */
+#define O32_SPSZ SZREG
+/* Combined area frame size. */
+#define O32_FRAMESZ (O32_ARGSZ + O32_SPSZ + O32_STATSZ)
+/* Switched stack frame size. */
+#define O32_NFRAMESZ (O32_ARGSZ + O32_SPSZ)
+
+ .text
+
+/*
+ * O32 function call dispatcher, for interfacing 32-bit ROM routines.
+ *
+ * The standard 64 (N32) calling sequence is supported, with a0 holding
+ * a function pointer, a1 a pointer to the new stack to call the
+ * function with or 0 if no stack switching is requested, a2-a7 -- the
+ * function call's first six arguments, and the stack -- the remaining
+ * arguments (up to O32_ARGC, including a2-a7). Static registers, gp
+ * and fp are preserved, v0 holds the result. This code relies on the
+ * called o32 function for sp and ra restoration and this dispatcher has
+ * to be placed in a KSEGx (or KUSEG) address space. Any pointers
+ * passed have to point to addresses within one of these spaces as well.
+ */
+NESTED(call_o32, O32_FRAMESZ, ra)
+ REG_SUBU sp,O32_FRAMESZ
+
+ REG_S ra,O32_FRAMESZ-1*SZREG(sp)
+ REG_S fp,O32_FRAMESZ-2*SZREG(sp)
+ REG_S gp,O32_FRAMESZ-3*SZREG(sp)
+ REG_S s7,O32_FRAMESZ-4*SZREG(sp)
+ REG_S s6,O32_FRAMESZ-5*SZREG(sp)
+ REG_S s5,O32_FRAMESZ-6*SZREG(sp)
+ REG_S s4,O32_FRAMESZ-7*SZREG(sp)
+ REG_S s3,O32_FRAMESZ-8*SZREG(sp)
+ REG_S s2,O32_FRAMESZ-9*SZREG(sp)
+ REG_S s1,O32_FRAMESZ-10*SZREG(sp)
+ REG_S s0,O32_FRAMESZ-11*SZREG(sp)
+
+ move jp,a0
+
+ move fp,sp
+ beqz a1,0f
+ REG_SUBU fp,a1,O32_NFRAMESZ
+0:
+ REG_S sp,O32_NFRAMESZ-1*SZREG(fp)
+
+ sll a0,a2,zero
+ sll a1,a3,zero
+ sll a2,a4,zero
+ sll a3,a5,zero
+ sw a6,4*O32_SZREG(fp)
+ sw a7,5*O32_SZREG(fp)
+
+ PTR_LA t0,O32_FRAMESZ(sp)
+ PTR_LA t1,6*O32_SZREG(fp)
+ li t2,O32_ARGC-6
+1:
+ lw t3,(t0)
+ REG_ADDU t0,SZREG
+ sw t3,(t1)
+ REG_SUBU t2,1
+ REG_ADDU t1,O32_SZREG
+ bnez t2,1b
+
+ move sp,fp
+
+ jalr jp
+
+ REG_L sp,O32_NFRAMESZ-1*SZREG(sp)
+
+ REG_L s0,O32_FRAMESZ-11*SZREG(sp)
+ REG_L s1,O32_FRAMESZ-10*SZREG(sp)
+ REG_L s2,O32_FRAMESZ-9*SZREG(sp)
+ REG_L s3,O32_FRAMESZ-8*SZREG(sp)
+ REG_L s4,O32_FRAMESZ-7*SZREG(sp)
+ REG_L s5,O32_FRAMESZ-6*SZREG(sp)
+ REG_L s6,O32_FRAMESZ-5*SZREG(sp)
+ REG_L s7,O32_FRAMESZ-4*SZREG(sp)
+ REG_L gp,O32_FRAMESZ-3*SZREG(sp)
+ REG_L fp,O32_FRAMESZ-2*SZREG(sp)
+ REG_L ra,O32_FRAMESZ-1*SZREG(sp)
+
+ REG_ADDU sp,O32_FRAMESZ
+ jr ra
+END(call_o32)
diff --git a/arch/mips/fw/lib/cmdline.c b/arch/mips/fw/lib/cmdline.c
new file mode 100644
index 0000000000..892765b742
--- /dev/null
+++ b/arch/mips/fw/lib/cmdline.c
@@ -0,0 +1,103 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/addrspace.h>
+#include <asm/fw/fw.h>
+
+int fw_argc;
+int *_fw_argv;
+int *_fw_envp;
+
+#ifndef CONFIG_HAVE_PLAT_FW_INIT_CMDLINE
+void __init fw_init_cmdline(void)
+{
+ int i;
+
+ /* Validate command line parameters. */
+ if ((fw_arg0 >= CKSEG0) || (fw_arg1 < CKSEG0)) {
+ fw_argc = 0;
+ _fw_argv = NULL;
+ } else {
+ fw_argc = (fw_arg0 & 0x0000ffff);
+ _fw_argv = (int *)fw_arg1;
+ }
+
+ /* Validate environment pointer. */
+ if (fw_arg2 < CKSEG0)
+ _fw_envp = NULL;
+ else
+ _fw_envp = (int *)fw_arg2;
+
+ for (i = 1; i < fw_argc; i++) {
+ strlcat(arcs_cmdline, fw_argv(i), COMMAND_LINE_SIZE);
+ if (i < (fw_argc - 1))
+ strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
+ }
+}
+#endif
+
+char * __init fw_getcmdline(void)
+{
+ return &(arcs_cmdline[0]);
+}
+
+char *fw_getenv(char *envname)
+{
+ char *result = NULL;
+
+ if (_fw_envp != NULL && fw_envp(0) != NULL) {
+ /*
+ * Return a pointer to the given environment variable.
+ * YAMON uses "name", "value" pairs, while U-Boot uses
+ * "name=value".
+ */
+ int i, yamon, index = 0;
+
+ yamon = (strchr(fw_envp(index), '=') == NULL);
+ i = strlen(envname);
+
+ while (fw_envp(index)) {
+ if (strncmp(envname, fw_envp(index), i) == 0) {
+ if (yamon) {
+ result = fw_envp(index + 1);
+ break;
+ } else if (fw_envp(index)[i] == '=') {
+ result = fw_envp(index) + i + 1;
+ break;
+ }
+ }
+
+ /* Increment array index. */
+ if (yamon)
+ index += 2;
+ else
+ index += 1;
+ }
+ }
+
+ return result;
+}
+
+unsigned long fw_getenvl(char *envname)
+{
+ unsigned long envl = 0UL;
+ char *str;
+ int tmp;
+
+ str = fw_getenv(envname);
+ if (str) {
+ tmp = kstrtoul(str, 0, &envl);
+ if (tmp)
+ envl = 0;
+ }
+
+ return envl;
+}
diff --git a/arch/mips/fw/sni/Makefile b/arch/mips/fw/sni/Makefile
new file mode 100644
index 0000000000..e5ba8e86b7
--- /dev/null
+++ b/arch/mips/fw/sni/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for the SNI prom monitor routines under Linux.
+#
+
+lib-$(CONFIG_FW_SNIPROM) += sniprom.o
diff --git a/arch/mips/fw/sni/sniprom.c b/arch/mips/fw/sni/sniprom.c
new file mode 100644
index 0000000000..74975e1159
--- /dev/null
+++ b/arch/mips/fw/sni/sniprom.c
@@ -0,0 +1,149 @@
+/*
+ * Big Endian PROM code for SNI RM machines
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org)
+ * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/memblock.h>
+#include <linux/string.h>
+#include <linux/console.h>
+
+#include <asm/addrspace.h>
+#include <asm/sni.h>
+#include <asm/mipsprom.h>
+#include <asm/mipsregs.h>
+#include <asm/bootinfo.h>
+#include <asm/setup.h>
+
+/* special SNI prom calls */
+/*
+ * This does not exist in all proms - SINIX compares
+ * the prom env variable "version" against "2.0008"
+ * or greater. If lesser it tries to probe interesting
+ * registers
+ */
+#define PROM_GET_MEMCONF 58
+#define PROM_GET_HWCONF 61
+
+#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
+#define PROM_ENTRY(x) (PROM_VEC + (x))
+
+#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
+#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
+#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
+#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
+
+#ifdef CONFIG_64BIT
+
+/* O32 stack has to be 8-byte aligned. */
+static u64 o32_stk[4096];
+#define O32_STK (&o32_stk[ARRAY_SIZE(o32_stk)])
+
+#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
+ __asm__(#fun " = call_o32")
+
+int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
+char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
+void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
+u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
+
+#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
+#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
+#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
+#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
+
+#else
+#define _prom_putchar(x) ___prom_putchar(x)
+#define _prom_getenv(x) ___prom_getenv(x)
+#define _prom_get_memconf(x) ___prom_get_memconf(x)
+#define _prom_get_hwconf(x) ___prom_get_hwconf(x)
+#endif
+
+void prom_putchar(char c)
+{
+ _prom_putchar(c);
+}
+
+
+char *prom_getenv(char *s)
+{
+ return _prom_getenv(s);
+}
+
+void *prom_get_hwconf(void)
+{
+ u32 hwconf = _prom_get_hwconf();
+
+ if (hwconf == 0xffffffff)
+ return NULL;
+
+ return (void *)CKSEG1ADDR(hwconf);
+}
+
+/*
+ * /proc/cpuinfo system type
+ *
+ */
+char *system_type = "Unknown";
+const char *get_system_type(void)
+{
+ return system_type;
+}
+
+static void __init sni_mem_init(void)
+{
+ int i, memsize;
+ struct membank {
+ u32 size;
+ u32 base;
+ u32 size2;
+ u32 pad1;
+ u32 pad2;
+ } memconf[8];
+ int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
+
+
+ /* MemSIZE from prom in 16MByte chunks */
+ memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
+
+ pr_debug("IDProm memsize: %u MByte\n", memsize);
+
+ /* get memory bank layout from prom */
+ _prom_get_memconf(&memconf);
+
+ pr_debug("prom_get_mem_conf memory configuration:\n");
+ for (i = 0; i < 8 && memconf[i].size; i++) {
+ if (brd_type == SNI_BRD_PCI_TOWER ||
+ brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
+ if (memconf[i].base >= 0x20000000 &&
+ memconf[i].base < 0x30000000)
+ memconf[i].base -= 0x20000000;
+ }
+ pr_debug("Bank%d: %08x @ %08x\n", i,
+ memconf[i].size, memconf[i].base);
+ memblock_add(memconf[i].base, memconf[i].size);
+ }
+}
+
+void __init prom_init(void)
+{
+ int argc = fw_arg0;
+ u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
+ int i;
+
+ sni_mem_init();
+
+ /* copy prom cmdline parameters to kernel cmdline */
+ for (i = 1; i < argc; i++) {
+ strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
+ if (i < (argc - 1))
+ strcat(arcs_cmdline, " ");
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 00:22:22 +0000