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authorShinya Kuribayashi <skuribay@ruby.dti.ne.jp>2008-10-24 01:29:16 +0900
committerRalf Baechle <ralf@linux-mips.org>2008-10-27 16:18:29 +0000
commitf27655e34171b0ae9ea5a0aadae894e817f0f875 (patch)
tree3375121c5b9db911d5b16e56e47c1871bd9db9c1 /arch/mips/emma/common
parentcd741b604b94a4d5bebf2672626ffec7de44652c (diff)
downloadlinux-f27655e34171b0ae9ea5a0aadae894e817f0f875.tar.bz2
MIPS: EMMA: Move arch/mips/emma2rh/ into arch/mips/emma/
git mv arch/mips/{emma2rh,emma} and fixups Makefiles. We'll put all NEC EMMA series based machines there in the future. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/emma/common')
-rw-r--r--arch/mips/emma/common/Makefile13
-rw-r--r--arch/mips/emma/common/irq.c105
-rw-r--r--arch/mips/emma/common/irq_emma2rh.c106
-rw-r--r--arch/mips/emma/common/prom.c72
4 files changed, 296 insertions, 0 deletions
diff --git a/arch/mips/emma/common/Makefile b/arch/mips/emma/common/Makefile
new file mode 100644
index 000000000000..cb0fd328c61f
--- /dev/null
+++ b/arch/mips/emma/common/Makefile
@@ -0,0 +1,13 @@
+#
+# arch/mips/emma2rh/common/Makefile
+# Makefile for the common code of NEC EMMA2RH based board.
+#
+# Copyright (C) NEC Electronics Corporation 2005-2006
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+
+obj-$(CONFIG_NEC_MARKEINS) += irq.o irq_emma2rh.o prom.o
diff --git a/arch/mips/emma/common/irq.c b/arch/mips/emma/common/irq.c
new file mode 100644
index 000000000000..91cbd959ab67
--- /dev/null
+++ b/arch/mips/emma/common/irq.c
@@ -0,0 +1,105 @@
+/*
+ * arch/mips/emma2rh/common/irq.c
+ * This file is common irq dispatcher.
+ *
+ * Copyright (C) NEC Electronics Corporation 2005-2006
+ *
+ * This file is based on the arch/mips/ddb5xxx/ddb5477/irq.c
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/types.h>
+
+#include <asm/system.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+#include <asm/emma2rh/emma2rh.h>
+
+/*
+ * the first level int-handler will jump here if it is a emma2rh irq
+ */
+void emma2rh_irq_dispatch(void)
+{
+ u32 intStatus;
+ u32 bitmask;
+ u32 i;
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_0)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_0);
+
+#ifdef EMMA2RH_SW_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_SW_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 swIntStatus;
+ swIntStatus = emma2rh_in32(EMMA2RH_BHIF_SW_INT)
+ & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (swIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_SW_IRQ_BASE + i);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_1)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_1);
+
+#ifdef EMMA2RH_GPIO_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_GPIO_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 gpioIntStatus;
+ gpioIntStatus = emma2rh_in32(EMMA2RH_GPIO_INT_ST)
+ & emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (gpioIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_2)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_2);
+
+ for (i = 64, bitmask = 1; i < 96; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+}
diff --git a/arch/mips/emma/common/irq_emma2rh.c b/arch/mips/emma/common/irq_emma2rh.c
new file mode 100644
index 000000000000..96df37b77759
--- /dev/null
+++ b/arch/mips/emma/common/irq_emma2rh.c
@@ -0,0 +1,106 @@
+/*
+ * arch/mips/emma2rh/common/irq_emma2rh.c
+ * This file defines the irq handler for EMMA2RH.
+ *
+ * Copyright (C) NEC Electronics Corporation 2005-2006
+ *
+ * This file is based on the arch/mips/ddb5xxx/ddb5477/irq_5477.c
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * EMMA2RH defines 64 IRQs.
+ *
+ * This file exports one function:
+ * emma2rh_irq_init(u32 irq_base);
+ */
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+
+#include <asm/debug.h>
+
+#include <asm/emma2rh/emma2rh.h>
+
+/* number of total irqs supported by EMMA2RH */
+#define NUM_EMMA2RH_IRQ 96
+
+static int emma2rh_irq_base = -1;
+
+void ll_emma2rh_irq_enable(int);
+void ll_emma2rh_irq_disable(int);
+
+static void emma2rh_irq_enable(unsigned int irq)
+{
+ ll_emma2rh_irq_enable(irq - emma2rh_irq_base);
+}
+
+static void emma2rh_irq_disable(unsigned int irq)
+{
+ ll_emma2rh_irq_disable(irq - emma2rh_irq_base);
+}
+
+struct irq_chip emma2rh_irq_controller = {
+ .name = "emma2rh_irq",
+ .ack = emma2rh_irq_disable,
+ .mask = emma2rh_irq_disable,
+ .mask_ack = emma2rh_irq_disable,
+ .unmask = emma2rh_irq_enable,
+};
+
+void emma2rh_irq_init(u32 irq_base)
+{
+ u32 i;
+
+ for (i = irq_base; i < irq_base + NUM_EMMA2RH_IRQ; i++)
+ set_irq_chip_and_handler(i, &emma2rh_irq_controller,
+ handle_level_irq);
+
+ emma2rh_irq_base = irq_base;
+}
+
+void ll_emma2rh_irq_enable(int emma2rh_irq)
+{
+ u32 reg_value;
+ u32 reg_bitmask;
+ u32 reg_index;
+
+ reg_index = EMMA2RH_BHIF_INT_EN_0
+ + (EMMA2RH_BHIF_INT_EN_1 - EMMA2RH_BHIF_INT_EN_0)
+ * (emma2rh_irq / 32);
+ reg_value = emma2rh_in32(reg_index);
+ reg_bitmask = 0x1 << (emma2rh_irq % 32);
+ db_assert((reg_value & reg_bitmask) == 0);
+ emma2rh_out32(reg_index, reg_value | reg_bitmask);
+}
+
+void ll_emma2rh_irq_disable(int emma2rh_irq)
+{
+ u32 reg_value;
+ u32 reg_bitmask;
+ u32 reg_index;
+
+ reg_index = EMMA2RH_BHIF_INT_EN_0
+ + (EMMA2RH_BHIF_INT_EN_1 - EMMA2RH_BHIF_INT_EN_0)
+ * (emma2rh_irq / 32);
+ reg_value = emma2rh_in32(reg_index);
+ reg_bitmask = 0x1 << (emma2rh_irq % 32);
+ db_assert((reg_value & reg_bitmask) != 0);
+ emma2rh_out32(reg_index, reg_value & ~reg_bitmask);
+}
diff --git a/arch/mips/emma/common/prom.c b/arch/mips/emma/common/prom.c
new file mode 100644
index 000000000000..97bf29e755a0
--- /dev/null
+++ b/arch/mips/emma/common/prom.c
@@ -0,0 +1,72 @@
+/*
+ * arch/mips/emma2rh/common/prom.c
+ * This file is prom file.
+ *
+ * Copyright (C) NEC Electronics Corporation 2004-2006
+ *
+ * This file is based on the arch/mips/ddb5xxx/common/prom.c
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/emma2rh/emma2rh.h>
+
+const char *get_system_type(void)
+{
+#ifdef CONFIG_NEC_MARKEINS
+ return "NEC EMMA2RH Mark-eins";
+#else
+#error Unknown NEC board
+#endif
+}
+
+/* [jsun@junsun.net] PMON passes arguments in C main() style */
+void __init prom_init(void)
+{
+ int argc = fw_arg0;
+ char **arg = (char **)fw_arg1;
+ int i;
+
+ /* if user passes kernel args, ignore the default one */
+ if (argc > 1)
+ arcs_cmdline[0] = '\0';
+
+ /* arg[0] is "g", the rest is boot parameters */
+ for (i = 1; i < argc; i++) {
+ if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
+ >= sizeof(arcs_cmdline))
+ break;
+ strcat(arcs_cmdline, arg[i]);
+ strcat(arcs_cmdline, " ");
+ }
+
+#ifdef CONFIG_NEC_MARKEINS
+ add_memory_region(0, EMMA2RH_RAM_SIZE, BOOT_MEM_RAM);
+#else
+#error Unknown NEC board
+#endif
+}
+
+void __init prom_free_prom_memory(void)
+{
+}