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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2008-07-11 18:27:54 +0400
committerRalf Baechle <ralf@linux-mips.org>2008-07-15 21:44:35 +0400
commitedcaf1a6a77315562e9781245cc8e028c9a921dc (patch)
treea20a0a85071fa283c36db87a41d1a7e091a35781 /arch/mips/txx9/generic
parent766891565bdaf605ea4aebe3e75de77e848254d0 (diff)
downloadlinux-edcaf1a6a77315562e9781245cc8e028c9a921dc.tar.xz
[MIPS] TXx9: Make single kernel can support multiple boards
Make single kernel can be used on RBTX4927/37/38. Also make some SoC-specific code independent from board-specific code. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic')
-rw-r--r--arch/mips/txx9/generic/Makefile4
-rw-r--r--arch/mips/txx9/generic/irq_tx4927.c33
-rw-r--r--arch/mips/txx9/generic/irq_tx4938.c31
-rw-r--r--arch/mips/txx9/generic/pci.c11
-rw-r--r--arch/mips/txx9/generic/setup.c169
5 files changed, 189 insertions, 59 deletions
diff --git a/arch/mips/txx9/generic/Makefile b/arch/mips/txx9/generic/Makefile
index b80b6e072284..668fdaad6448 100644
--- a/arch/mips/txx9/generic/Makefile
+++ b/arch/mips/txx9/generic/Makefile
@@ -4,8 +4,8 @@
obj-y += setup.o
obj-$(CONFIG_PCI) += pci.o
-obj-$(CONFIG_TOSHIBA_RBTX4927) += mem_tx4927.o irq_tx4927.o
-obj-$(CONFIG_TOSHIBA_RBTX4938) += mem_tx4938.o irq_tx4938.o
+obj-$(CONFIG_SOC_TX4927) += mem_tx4927.o irq_tx4927.o
+obj-$(CONFIG_SOC_TX4938) += mem_tx4938.o irq_tx4938.o
obj-$(CONFIG_TOSHIBA_FPCIB0) += smsc_fdc37m81x.o
obj-$(CONFIG_KGDB) += dbgio.o
diff --git a/arch/mips/txx9/generic/irq_tx4927.c b/arch/mips/txx9/generic/irq_tx4927.c
index 685ecc2ed551..6377bd8a9050 100644
--- a/arch/mips/txx9/generic/irq_tx4927.c
+++ b/arch/mips/txx9/generic/irq_tx4927.c
@@ -26,39 +26,12 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/irq_cpu.h>
-#include <asm/mipsregs.h>
-#ifdef CONFIG_TOSHIBA_RBTX4927
-#include <asm/txx9/rbtx4927.h>
-#endif
+#include <asm/txx9/tx4927.h>
void __init tx4927_irq_init(void)
{
mips_cpu_irq_init();
txx9_irq_init(TX4927_IRC_REG);
- set_irq_chained_handler(TX4927_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
- unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
-
- if (pending & STATUSF_IP7) /* cpu timer */
- do_IRQ(TX4927_IRQ_CPU_TIMER);
- else if (pending & STATUSF_IP2) { /* tx4927 pic */
- int irq = txx9_irq();
-#ifdef CONFIG_TOSHIBA_RBTX4927
- if (irq == TX4927_IRQ_NEST_EXT_ON_PIC)
- irq = toshiba_rbtx4927_irq_nested(irq);
-#endif
- if (unlikely(irq < 0)) {
- spurious_interrupt();
- return;
- }
- do_IRQ(irq);
- } else if (pending & STATUSF_IP0) /* user line 0 */
- do_IRQ(TX4927_IRQ_USER0);
- else if (pending & STATUSF_IP1) /* user line 1 */
- do_IRQ(TX4927_IRQ_USER1);
- else
- spurious_interrupt();
+ set_irq_chained_handler(MIPS_CPU_IRQ_BASE + TX4927_IRC_INT,
+ handle_simple_irq);
}
diff --git a/arch/mips/txx9/generic/irq_tx4938.c b/arch/mips/txx9/generic/irq_tx4938.c
index 0886d9138818..5fc86c9c9d2f 100644
--- a/arch/mips/txx9/generic/irq_tx4938.c
+++ b/arch/mips/txx9/generic/irq_tx4938.c
@@ -14,35 +14,12 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/irq_cpu.h>
-#include <asm/mipsregs.h>
-#include <asm/txx9/rbtx4938.h>
+#include <asm/txx9/tx4938.h>
-void __init
-tx4938_irq_init(void)
+void __init tx4938_irq_init(void)
{
mips_cpu_irq_init();
txx9_irq_init(TX4938_IRC_REG);
- set_irq_chained_handler(TX4938_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
-}
-
-int toshiba_rbtx4938_irq_nested(int irq);
-
-asmlinkage void plat_irq_dispatch(void)
-{
- unsigned int pending = read_c0_cause() & read_c0_status();
-
- if (pending & STATUSF_IP7)
- do_IRQ(TX4938_IRQ_CPU_TIMER);
- else if (pending & STATUSF_IP2) {
- int irq = txx9_irq();
- if (irq == TX4938_IRQ_PIC_BEG + TX4938_IR_INT(0))
- irq = toshiba_rbtx4938_irq_nested(irq);
- if (irq >= 0)
- do_IRQ(irq);
- else
- spurious_interrupt();
- } else if (pending & STATUSF_IP1)
- do_IRQ(TX4938_IRQ_USER1);
- else if (pending & STATUSF_IP0)
- do_IRQ(TX4938_IRQ_USER0);
+ set_irq_chained_handler(MIPS_CPU_IRQ_BASE + TX4938_IRC_INT,
+ handle_simple_irq);
}
diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c
index 8173faab99bb..0b92d8c13208 100644
--- a/arch/mips/txx9/generic/pci.c
+++ b/arch/mips/txx9/generic/pci.c
@@ -16,6 +16,7 @@
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/io.h>
+#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#ifdef CONFIG_TOSHIBA_FPCIB0
#include <linux/interrupt.h>
@@ -375,3 +376,13 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1,
#endif
DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, final_fixup);
DECLARE_PCI_FIXUP_RESUME(PCI_ANY_ID, PCI_ANY_ID, final_fixup);
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return txx9_board_vec->pci_map_irq(dev, slot, pin);
+}
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 46a631177757..66ff74f80c6b 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -14,7 +14,16 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <asm/bootinfo.h>
#include <asm/txx9/generic.h>
+#ifdef CONFIG_CPU_TX49XX
+#include <asm/txx9/tx4938.h>
+#endif
/* EBUSC settings of TX4927, etc. */
struct resource txx9_ce_res[8];
@@ -49,3 +58,163 @@ txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
unsigned int txx9_master_clock;
unsigned int txx9_cpu_clock;
unsigned int txx9_gbus_clock;
+
+
+/* Minimum CLK support */
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ if (!strcmp(id, "spi-baseclk"))
+ return (struct clk *)(txx9_gbus_clock / 2 / 4);
+ if (!strcmp(id, "imbus_clk"))
+ return (struct clk *)(txx9_gbus_clock / 2);
+ return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+ return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ return (unsigned long)clk;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+void clk_put(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_put);
+
+extern struct txx9_board_vec jmr3927_vec;
+extern struct txx9_board_vec rbtx4927_vec;
+extern struct txx9_board_vec rbtx4937_vec;
+extern struct txx9_board_vec rbtx4938_vec;
+
+/* board definitions */
+static struct txx9_board_vec *board_vecs[] __initdata = {
+#ifdef CONFIG_TOSHIBA_JMR3927
+ &jmr3927_vec,
+#endif
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ &rbtx4927_vec,
+ &rbtx4937_vec,
+#endif
+#ifdef CONFIG_TOSHIBA_RBTX4938
+ &rbtx4938_vec,
+#endif
+};
+struct txx9_board_vec *txx9_board_vec __initdata;
+static char txx9_system_type[32];
+
+void __init prom_init_cmdline(void)
+{
+ int argc = (int)fw_arg0;
+ char **argv = (char **)fw_arg1;
+ int i; /* Always ignore the "-c" at argv[0] */
+
+ /* ignore all built-in args if any f/w args given */
+ if (argc > 1)
+ *arcs_cmdline = '\0';
+
+ for (i = 1; i < argc; i++) {
+ if (i != 1)
+ strcat(arcs_cmdline, " ");
+ strcat(arcs_cmdline, argv[i]);
+ }
+}
+
+void __init prom_init(void)
+{
+ int i;
+
+#ifdef CONFIG_CPU_TX39XX
+ mips_machtype = MACH_TOSHIBA_JMR3927;
+#endif
+#ifdef CONFIG_CPU_TX49XX
+ switch (TX4938_REV_PCODE()) {
+ case 0x4927:
+ mips_machtype = MACH_TOSHIBA_RBTX4927;
+ break;
+ case 0x4937:
+ mips_machtype = MACH_TOSHIBA_RBTX4937;
+ break;
+ case 0x4938:
+ mips_machtype = MACH_TOSHIBA_RBTX4938;
+ break;
+ }
+#endif
+ for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
+ if (board_vecs[i]->type == mips_machtype) {
+ txx9_board_vec = board_vecs[i];
+ strcpy(txx9_system_type, txx9_board_vec->system);
+ return txx9_board_vec->prom_init();
+ }
+ }
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+const char *get_system_type(void)
+{
+ return txx9_system_type;
+}
+
+char * __init prom_getcmdline(void)
+{
+ return &(arcs_cmdline[0]);
+}
+
+/* wrappers */
+void __init plat_mem_setup(void)
+{
+ txx9_board_vec->mem_setup();
+}
+
+void __init arch_init_irq(void)
+{
+ txx9_board_vec->irq_setup();
+}
+
+void __init plat_time_init(void)
+{
+ txx9_board_vec->time_init();
+}
+
+static int __init _txx9_arch_init(void)
+{
+ if (txx9_board_vec->arch_init)
+ txx9_board_vec->arch_init();
+ return 0;
+}
+arch_initcall(_txx9_arch_init);
+
+static int __init _txx9_device_init(void)
+{
+ if (txx9_board_vec->device_init)
+ txx9_board_vec->device_init();
+ return 0;
+}
+device_initcall(_txx9_device_init);
+
+int (*txx9_irq_dispatch)(int pending);
+asmlinkage void plat_irq_dispatch(void)
+{
+ int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+ int irq = txx9_irq_dispatch(pending);
+
+ if (likely(irq >= 0))
+ do_IRQ(irq);
+ else
+ spurious_interrupt();
+}