[PATCH 2/2] Changes to existing files for 0PF FPGA board.

From: Rob Landley
Date: Thu Jun 18 2015 - 13:19:54 EST

Changes to existing files to add 0pf j2 board support.

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 50057fe..c121a92 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -66,7 +66,7 @@ config SUPERH32
select HAVE_MIXED_BREAKPOINTS_REGS
select PERF_EVENTS
select ARCH_HIBERNATION_POSSIBLE if MMU
- select SPARSE_IRQ
+ select SPARSE_IRQ if !CPU_SUBTYPE_0PF
select HAVE_CC_STACKPROTECTOR

config SUPERH64
@@ -108,6 +108,9 @@ config ARCH_SUSPEND_POSSIBLE
config ARCH_HIBERNATION_POSSIBLE
def_bool n

+config ARCH_USES_GETTIMEOFFSET
+ def_bool n
+
config SYS_SUPPORTS_APM_EMULATION
bool
select ARCH_SUSPEND_POSSIBLE
@@ -184,6 +187,11 @@ config CPU_SH2A
select CPU_SH2
select UNCACHED_MAPPING

+config CPU_SH2J
+ bool
+ select CPU_SH2
+ select ARCH_USES_GETTIMEOFFSET
+
config CPU_SH3
bool
select CPU_HAS_INTEVT
@@ -303,6 +311,12 @@ config CPU_SUBTYPE_MXG
help
Select MX-G if running on an R8A03022BG part.

+# SH-2J Processor Support
+
+config CPU_SUBTYPE_0PF
+ bool "Support 0PF J2 SoftCore"
+ select CPU_SH2J
+
# SH-3 Processor Support

config CPU_SUBTYPE_SH7705
@@ -753,6 +767,7 @@ config ZERO_PAGE_OFFSET
SH_7751_SOLUTION_ENGINE
default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
default "0x00002000" if PAGE_SIZE_8KB
+ default "0x0003F000" if CPU_SUBTYPE_0PF
default "0x00001000"
help
This sets the default offset of zero page.
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index bf5b3f5..e609157 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -4,6 +4,7 @@
# Copyright (C) 1999 Kaz Kojima
# Copyright (C) 2002 - 2008 Paul Mundt
# Copyright (C) 2002 M. R. Brown
+# Copyright (C) 2012 SEI, Inc. (sh2j)
#
# 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
@@ -19,6 +20,7 @@ isa-y := any
isa-$(CONFIG_SH_DSP) := sh
isa-$(CONFIG_CPU_SH2) := sh2
isa-$(CONFIG_CPU_SH2A) := sh2a
+isa-$(CONFIG_CPU_SH2J) := sh2j
isa-$(CONFIG_CPU_SH3) := sh3
isa-$(CONFIG_CPU_SH4) := sh4
isa-$(CONFIG_CPU_SH4A) := sh4a
@@ -31,6 +33,7 @@ isa-y := $(isa-y)-up
endif

cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
+cflags-$(CONFIG_CPU_SH2J) := $(call cc-option,-m2,)
cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
$(call cc-option,-m2a-nofpu,) \
$(call cc-option,-m4-nofpu,)
@@ -91,6 +94,7 @@ defaultimage-$(CONFIG_SH_SH7757LCR) := uImage
defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE) := uImage
defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE) := vmlinux
defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE) := vmlinux
+defaultimage-$(CONFIG_SH_0PF) := vmlinux

# Set some sensible Kbuild defaults
KBUILD_IMAGE := $(defaultimage-y)
@@ -173,6 +177,7 @@ core-$(CONFIG_HD6446X_SERIES) += arch/sh/cchips/hd6446x/
# As an example, in order of preference, SH-2A > SH-2 > common definitions.
#
cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
+cpuincdir-$(CONFIG_CPU_SH2J) += cpu-sh2j
cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
cpuincdir-$(CONFIG_CPU_SH4A) += cpu-sh4a
diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig
index 89963d13..c6721d2 100644
--- a/arch/sh/boards/Kconfig
+++ b/arch/sh/boards/Kconfig
@@ -90,6 +90,13 @@ config SH_7343_SOLUTION_ENGINE
Select 7343 SolutionEngine if configuring for a Hitachi
SH7343 (SH-Mobile 3AS) evaluation board.

+config 0PF_FPGA
+ bool "0PF FPGA"
+ depends on CPU_SUBTYPE_0PF
+ help
+ Select 0PF_FPGA if you are configuring for an FPGA with
+ the SH2j-workalike SoftCore from http://0pf.org
+
config SH_HP6XX
bool "HP6XX"
select SYS_SUPPORTS_APM_EMULATION
diff --git a/arch/sh/boards/Makefile b/arch/sh/boards/Makefile
index 975a0f6..51a7eb3 100644
--- a/arch/sh/boards/Makefile
+++ b/arch/sh/boards/Makefile
@@ -15,3 +15,4 @@ obj-$(CONFIG_SH_TITAN) += board-titan.o
obj-$(CONFIG_SH_SH7757LCR) += board-sh7757lcr.o
obj-$(CONFIG_SH_APSH4A3A) += board-apsh4a3a.o
obj-$(CONFIG_SH_APSH4AD0A) += board-apsh4ad0a.o
+obj-$(CONFIG_0PF_FPGA) += board-0pf.o
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h
index 1506897..aedabf2 100644
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -15,7 +15,7 @@
*/
enum cpu_type {
/* SH-2 types */
- CPU_SH7619,
+ CPU_SH7619, CPU_0PF,

/* SH-2A types */
CPU_SH7201, CPU_SH7203, CPU_SH7206, CPU_SH7263, CPU_SH7264, CPU_SH7269,
diff --git a/arch/sh/include/cpu-sh2/cpu/cache.h b/arch/sh/include/cpu-sh2/cpu/cache.h
index aa1b2b9..1da5abb 100644
--- a/arch/sh/include/cpu-sh2/cpu/cache.h
+++ b/arch/sh/include/cpu-sh2/cpu/cache.h
@@ -38,6 +38,10 @@
#define CCR_CACHE_INVALIDATE CCR_CACHE_CF
#define CACHE_PHYSADDR_MASK 0x1ffffc00

+#elif defined(CONFIG_CPU_SUBTYPE_0PF)
+#define CCR 0xabcd00c0
+#define CCR_CACHE_ENABLE 0x80000000
+#define CCR_CACHE_RESET 0x101
#endif

#endif /* __ASM_CPU_SH2_CACHE_H */
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index 0d7360d..cda35ce 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -106,7 +106,7 @@ void __attribute__ ((weak)) l2_cache_init(void)
/*
* Generic first-level cache init
*/
-#ifdef CONFIG_SUPERH32
+#if defined(CONFIG_SUPERH32) && !defined(CONFIG_CPU_SUBTYPE_0PF)
static void cache_init(void)
{
unsigned long ccr, flags;
diff --git a/arch/sh/kernel/cpu/proc.c b/arch/sh/kernel/cpu/proc.c
index 9e6624c..4381fc2 100644
--- a/arch/sh/kernel/cpu/proc.c
+++ b/arch/sh/kernel/cpu/proc.c
@@ -26,6 +26,7 @@ static const char *cpu_name[] = {
[CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
[CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
[CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
+ [CPU_0PF] = "SH2J-0PF",
[CPU_SH7372] = "SH7372", [CPU_SH7734] = "SH7734",
[CPU_SH_NONE] = "Unknown"
};
diff --git a/arch/sh/kernel/cpu/sh2/Makefile b/arch/sh/kernel/cpu/sh2/Makefile
index f0f059a..7502611 100644
--- a/arch/sh/kernel/cpu/sh2/Makefile
+++ b/arch/sh/kernel/cpu/sh2/Makefile
@@ -5,3 +5,4 @@
obj-y := ex.o probe.o entry.o

obj-$(CONFIG_CPU_SUBTYPE_SH7619) += setup-sh7619.o clock-sh7619.o
+obj-$(CONFIG_CPU_SUBTYPE_0PF) += setup-0pf.o clock-0pf.o
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index c8a4331..3c997c9 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -3,6 +3,7 @@
*
* The SH-2 exception entry
*
+ * Copyright (C) 2012 SEI,Inc.
* Copyright (C) 2005-2008 Yoshinori Sato
* Copyright (C) 2005 AXE,Inc.
*
@@ -147,7 +148,11 @@ ENTRY(exception_handler)
mov #32,r8
cmp/hs r8,r9
bt trap_entry ! 64 > vec >= 32 is trap
-
+#if defined(CONFIG_CPU_SUBTYPE_0PF)
+ mov #16,r8
+ cmp/hs r8,r9
+ bt interrupt_entry ! 32 > vec >= 16 is interrupt
+#endif
mov.l 4f,r8
mov r9,r4
shll2 r9
@@ -245,6 +250,19 @@ ENTRY(address_error_trap_handler)
.align 2
1: .long do_address_error

+#if defined(CONFIG_CPU_SUBTYPE_0PF)
+ENTRY(pc_address_error_trap_handler)
+ mov r15,r4 ! regs
+ mov #OFF_PC,r0
+ mov.l @(r0,r15),r6 ! pc
+ mov.l 1f,r0
+ jmp @r0
+ mov #0,r5 ! writeaccess is unknown
+
+ .align 2
+1: .long do_pc_address_error
+#endif // CONFIG_CPU_SUBTYPE_0PF
+
restore_all:
stc sr,r0
or #0xf0,r0
diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index 6c687ae..9c9e401 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -24,6 +24,12 @@ void cpu_probe(void)
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.flags = 0;
#endif
+
+#if defined(CONFIG_CPU_SUBTYPE_0PF)
+ boot_cpu_data.type = CPU_0PF;
+ boot_cpu_data.dcache.flags = 0;
+#endif
+
/*
* SH-2 doesn't have separate caches
*/
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index eb10ff8..7de9bcb 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -20,6 +20,8 @@
#include <asm/thread_info.h>
#include <cpu/mmu_context.h>

+#include <asm/board-0pf.h>
+
atomic_t irq_err_count;

/*
@@ -175,11 +177,24 @@ void do_softirq_own_stack(void)
);
}
#else
+#define noinline __attribute__((noinline))
+static noinline void handle_irq_UART0(unsigned int irq) { generic_handle_irq(irq); }
+static noinline void handle_irq_UART1(unsigned int irq) { generic_handle_irq(irq); }
+static noinline void handle_irq_GPS(unsigned int irq) { generic_handle_irq(irq); }
+static noinline void handle_irq_EMAC(unsigned int irq) { generic_handle_irq(irq); }
static inline void handle_one_irq(unsigned int irq)
{
- generic_handle_irq(irq);
+ switch(irq) {
+ case Irq_UART0: handle_irq_UART0(irq); break;
+ case Irq_UART1: handle_irq_UART1(irq); break;
+ case Irq_GPS: handle_irq_GPS(irq); break;
+ case Irq_EMAC: handle_irq_EMAC(irq); break;
+ default:
+ generic_handle_irq(irq);
+ break;
+ }
}
-#endif
+#endif // CONFIG_IRQSTACKS

asmlinkage __irq_entry int do_IRQ(unsigned int irq, struct pt_regs *regs)
{
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index ff63934..cd09376 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -34,6 +34,7 @@
#ifdef CONFIG_CPU_SH2
# define TRAP_RESERVED_INST 4
# define TRAP_ILLEGAL_SLOT_INST 6
+# define TRAP_PC_ADDRESS_ERROR 8 // Aug 20, 2012 ulianov - SEI extension - PC governor
# define TRAP_ADDRESS_ERROR 9
# ifdef CONFIG_CPU_SH2A
# define TRAP_UBC 12
@@ -458,6 +459,14 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
return ret;
}

+#if defined(CONFIG_CPU_SUBTYPE_0PF)
+asmlinkage void do_pc_address_error(struct pt_regs *regs,
+ unsigned long writeaccess,
+ unsigned long address)
+{
+}
+#endif // CONFIG_CPU_SUBTYPE_0PF
+
/*
* Handle various address error exceptions:
* - instruction address error:
@@ -779,6 +788,9 @@ void __init trap_init(void)
#endif

#ifdef CONFIG_CPU_SH2
+ #if defined(CONFIG_CPU_SUBTYPE_0PF)
+ set_exception_table_vec(TRAP_PC_ADDRESS_ERROR, address_error_trap_handler);
+ #endif
set_exception_table_vec(TRAP_ADDRESS_ERROR, address_error_trap_handler);
#endif
#ifdef CONFIG_CPU_SH2A
diff --git a/arch/sh/mm/cache-sh2.c b/arch/sh/mm/cache-sh2.c
index a74259f..438eadb 100644
--- a/arch/sh/mm/cache-sh2.c
+++ b/arch/sh/mm/cache-sh2.c
@@ -3,6 +3,7 @@
*
* Copyright (C) 2002 Paul Mundt
* Copyright (C) 2008 Yoshinori Sato
+ * Copyright (C) 2012 SEI, Inc.
*
* Released under the terms of the GNU GPL v2.0.
*/
@@ -16,6 +17,30 @@
#include <asm/cacheflush.h>
#include <asm/io.h>

+#if defined(CONFIG_CPU_SUBTYPE_0PF)
+
+// Just flush the whole thing each time
+static void j2_flush_icache_range(void *fwoosh)
+{
+ __raw_writel(CCR_CACHE_RESET, CCR);
+}
+
+// This should never happen, but...
+static void j2_flush_icache_page(void *fwoosh)
+{
+ __raw_writel(CCR_CACHE_RESET, CCR);
+}
+
+void __init sh2_cache_init(void)
+{
+ local_flush_icache_range = j2_flush_icache_range;
+ local_flush_icache_page = j2_flush_icache_page;
+ boot_cpu_data.dcache.n_aliases = 0;
+
+ __raw_writel(CCR_CACHE_RESET, CCR);
+}
+
+#else
static void sh2__flush_wback_region(void *start, int size)
{
unsigned long v;
@@ -89,3 +114,4 @@ void __init sh2_cache_init(void)
__flush_purge_region = sh2__flush_purge_region;
__flush_invalidate_region = sh2__flush_invalidate_region;
}
+#endif
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index f770e39..17908f7 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -258,14 +258,16 @@ static void __init emit_cache_params(void)
boot_cpu_data.icache.entry_mask,
boot_cpu_data.icache.alias_mask,
boot_cpu_data.icache.n_aliases);
- printk(KERN_NOTICE "D-cache : n_ways=%d n_sets=%d way_incr=%d\n",
- boot_cpu_data.dcache.ways,
- boot_cpu_data.dcache.sets,
- boot_cpu_data.dcache.way_incr);
- printk(KERN_NOTICE "D-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
- boot_cpu_data.dcache.entry_mask,
- boot_cpu_data.dcache.alias_mask,
- boot_cpu_data.dcache.n_aliases);
+ if (boot_cpu_data.dcache.n_aliases) {
+ printk(KERN_NOTICE "D-cache : n_ways=%d n_sets=%d way_incr=%d\n",
+ boot_cpu_data.dcache.ways,
+ boot_cpu_data.dcache.sets,
+ boot_cpu_data.dcache.way_incr);
+ printk(KERN_NOTICE "D-cache : entry_mask=0x%08x alias_mask=0x%08x n_aliases=%d\n",
+ boot_cpu_data.dcache.entry_mask,
+ boot_cpu_data.dcache.alias_mask,
+ boot_cpu_data.dcache.n_aliases);
+ }

/*
* Emit Secondary Cache parameters if the CPU has a probed L2.
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index f8120c1b..aae8d72 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -594,7 +594,7 @@ config SERIAL_IMX_CONSOLE

config SERIAL_UARTLITE
tristate "Xilinx uartlite serial port support"
- depends on PPC32 || MICROBLAZE || MFD_TIMBERDALE || ARCH_ZYNQ
+ depends on PPC32 || MICROBLAZE || MFD_TIMBERDALE || ARCH_ZYNQ || CPU_SUBTYPE_0PF
select SERIAL_CORE
help
Say Y here if you want to use the Xilinx uartlite serial controller.
@@ -611,6 +611,12 @@ config SERIAL_UARTLITE_CONSOLE
console (the system console is the device which receives all kernel
messages and warnings and which allows logins in single user mode).

+config SERIAL_UARTLITE_0PF
+ tristate "Support 0PF UARTLITEs"
+ depends on SERIAL_UARTLITE = y && CPU_SUBTYPE_0PF
+ help
+ Say Y here to set up 0PF's UARTLITEs.
+
config SERIAL_SUNCORE
bool
depends on SPARC
--
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