From: Jiri Gaisler <jiri@gaisler.com>
To: sparclinux@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, wli@holomorphy.com
Subject: [2/7] LEON SPARC V8 processor support for linux-2.6.10
Date: Tue, 04 Jan 2005 20:04:03 +0100 [thread overview]
Message-ID: <41DAE8A3.5050507@gaisler.com> (raw)
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linux-2.6.10: Kernel patches:
[2/7] diff2.6.10_arch_sparc.diff: diff for arch/sparc
[-- Attachment #2: diff2.6.10_arch_sparc.diff --]
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diff -Naur ../linux-2.6.10/arch/sparc/Kconfig linux-2.6.10/arch/sparc/Kconfig
--- ../linux-2.6.10/arch/sparc/Kconfig 2004-12-24 22:33:47.000000000 +0100
+++ linux-2.6.10/arch/sparc/Kconfig 2005-01-03 17:58:06.000000000 +0100
@@ -223,6 +223,25 @@
a kernel compiled with this option will run only on sun4.
(And the current version will probably work only on sun4/330.)
+config LEON
+ bool "Running on SoC 'Leon', the open source sparc VHDL model"
+ help
+ Say Y here if you want to run linux on the Leon System-on-a-Chip
+ platform. For information go to www.gaisler.com. Download the VHDL
+ source and use the instruction level Leon sparc-simulator "tsim" which
+ is free for private use.
+
+if LEON
+
+config LEON_3
+ bool "Running on grlib's Leon3 "
+ help
+ Say Y here if you are running on a Leon3 from grlib
+ (download from www.gaisler.com).
+
+endif
+
+
if !SUN4
config PCI
diff -Naur ../linux-2.6.10/arch/sparc/kernel/Makefile linux-2.6.10/arch/sparc/kernel/Makefile
--- ../linux-2.6.10/arch/sparc/kernel/Makefile 2004-12-24 22:35:27.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/Makefile 2005-01-03 11:36:33.000000000 +0100
@@ -6,7 +6,7 @@
EXTRA_AFLAGS := -ansi
-IRQ_OBJS := irq.o sun4m_irq.o sun4c_irq.o sun4d_irq.o
+IRQ_OBJS := irq.o sun4m_irq.o sun4c_irq.o sun4d_irq.o leon_irq.o
obj-y := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
process.o signal.o ioport.o setup.o idprom.o \
sys_sparc.o sunos_asm.o systbls.o \
diff -Naur ../linux-2.6.10/arch/sparc/kernel/auxio.c linux-2.6.10/arch/sparc/kernel/auxio.c
--- ../linux-2.6.10/arch/sparc/kernel/auxio.c 2004-12-24 22:35:23.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/auxio.c 2005-01-03 11:36:33.000000000 +0100
@@ -29,6 +29,7 @@
switch (sparc_cpu_model) {
case sun4d:
case sun4:
+ case sparc_leon:
return;
default:
break;
diff -Naur ../linux-2.6.10/arch/sparc/kernel/cpu.c linux-2.6.10/arch/sparc/kernel/cpu.c
--- ../linux-2.6.10/arch/sparc/kernel/cpu.c 2004-12-24 22:35:25.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/cpu.c 2005-01-03 11:36:33.000000000 +0100
@@ -73,6 +73,9 @@
{ 5, 6, "reserved"},
{ 5, 7, "No FPU"},
{ 9, 3, "Fujitsu or Weitek on-chip FPU"},
+ /* Leon */
+ { 0xf, 0, "Meiko FPU"},
+ { 0xf, 1, "GRFPU"},
};
#define NSPARCFPU (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info))
@@ -117,7 +120,9 @@
{ 0xc, 0, "UNKNOWN CPU-VENDOR/TYPE"},
{ 0xd, 0, "UNKNOWN CPU-VENDOR/TYPE"},
{ 0xe, 0, "UNKNOWN CPU-VENDOR/TYPE"},
- { 0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"},
+ /* Leon */
+ { 0xf, 2, "Gaisler Research - Leon2 SoC"},
+ { 0xf, 3, "Gaisler Research - Leon3 SoC"},
};
#define NSPARCCHIPS (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info))
@@ -134,10 +139,14 @@
psr_impl = ((get_psr()>>28)&0xf);
psr_vers = ((get_psr()>>24)&0xf);
+#ifdef CONFIG_LEON
+ psr_impl = 0xf; /* hardcoded ids for older models/simulators */
+ psr_vers = 2;
+#endif
psr = get_psr();
put_psr(psr | PSR_EF);
- fpu_vers = ((get_fsr()>>17)&0x7);
+ fpu_vers = (get_psr() & PSR_EF) ? ((get_fsr()>>17)&0x7) : 7;
put_psr(psr);
for(i = 0; i<NSPARCCHIPS; i++) {
diff -Naur ../linux-2.6.10/arch/sparc/kernel/head.S linux-2.6.10/arch/sparc/kernel/head.S
--- ../linux-2.6.10/arch/sparc/kernel/head.S 2004-12-24 22:34:26.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/head.S 2005-01-03 11:36:33.000000000 +0100
@@ -835,6 +835,8 @@
cmp %l1, ' '
be 1f
+ cmp %l1, '2' ! leon2 or compatible
+ be 1f
cmp %l1, 'c'
be 1f
cmp %l1, 'm'
@@ -857,6 +859,8 @@
be sun4m_init
cmp %l1, 'd' ! Let us see how the beast will die
be sun4d_init
+ cmp %l1, '2' ! leon2 or compatible
+ be sun4c_continue_boot
nop
/* Jump into mmu context zero. */
diff -Naur ../linux-2.6.10/arch/sparc/kernel/idprom.c linux-2.6.10/arch/sparc/kernel/idprom.c
--- ../linux-2.6.10/arch/sparc/kernel/idprom.c 2004-12-24 22:34:26.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/idprom.c 2005-01-03 11:36:33.000000000 +0100
@@ -31,6 +31,8 @@
{ "Sun 4/200 Series", (SM_SUN4 | SM_4_260) },
{ "Sun 4/300 Series", (SM_SUN4 | SM_4_330) },
{ "Sun 4/400 Series", (SM_SUN4 | SM_4_470) },
+/* Now Leon */
+{ "Leon2 System-on-a-Chip", (M_LEON2 | M_LEON2_SOC) },
/* Now, Sun4c's */
{ "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) },
{ "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) },
diff -Naur ../linux-2.6.10/arch/sparc/kernel/irq.c linux-2.6.10/arch/sparc/kernel/irq.c
--- ../linux-2.6.10/arch/sparc/kernel/irq.c 2004-12-24 22:33:50.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/irq.c 2005-01-03 11:36:33.000000000 +0100
@@ -579,6 +579,7 @@
extern void sun4c_init_IRQ( void );
extern void sun4m_init_IRQ( void );
extern void sun4d_init_IRQ( void );
+ extern void leon_init_IRQ(void);
switch(sparc_cpu_model) {
case sun4c:
@@ -586,6 +587,10 @@
sun4c_init_IRQ();
break;
+ case sparc_leon:
+ leon_init_IRQ();
+ break;
+
case sun4m:
#ifdef CONFIG_PCI
pcic_probe();
diff -Naur ../linux-2.6.10/arch/sparc/kernel/leon_irq.c linux-2.6.10/arch/sparc/kernel/leon_irq.c
--- ../linux-2.6.10/arch/sparc/kernel/leon_irq.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/leon_irq.c 2005-01-03 15:54:16.000000000 +0100
@@ -0,0 +1,223 @@
+/*
+ * irq handling for Leon2/3
+ * Copyright (C) 2004 Konrad Eisele (eiselekd@web.de), Gaisler Research
+ * Copyright (C) 2004 Stefan Holst (mail@s-holst.de), Uni-Stuttgart
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <asm/pgtsrmmu.h>
+#include <asm/leon.h>
+#include <asm/sbus.h> /* for struct sbus_bus, warning suppress */
+#include <asm/timer.h>
+
+/* scaled down to timer to 1Mhz, used in sparc/kernel/leon_irq.c */
+#define CLOCK_TIMER_SCALAR 25
+
+#ifdef CONFIG_LEON_3
+extern volatile LEON3_IrqCtrl_Regs_Map *LEON3_IrqCtrl_Regs; /* drivers/amba/amba.c:amba_init() */
+extern volatile LEON3_GpTimer_Regs_Map *LEON3_GpTimer_Regs;
+extern unsigned long LEON3_GpTimer_Irq; /* drivers/amba.c:amba_init() */
+#undef LEON_IMASK
+#define LEON_IMASK ((&LEON3_IrqCtrl_Regs ->mask[0]))
+#endif
+
+static inline unsigned long get_irqmask(unsigned int irq)
+{
+ unsigned long mask;
+ if (!irq || irq > 0xf) {
+ printk("leon_get_irqmask: false irq number\n");
+ mask = 0;
+ } else {
+ mask = LEON_HARD_INT(irq);
+ }
+ return mask;
+}
+
+void leon_disable_irq(unsigned int irq_nr)
+{
+ unsigned long mask, flags;
+ mask = get_irqmask(irq_nr) & LEON_IRQMASK_R;
+ save_and_cli(flags);
+#ifdef CONFIG_LEON_3
+ LEON3_BYPASS_STORE_PA(LEON_IMASK, (LEON3_BYPASS_LOAD_PA(LEON_IMASK) & ~(mask)));
+#else
+ LEON_REGSTORE_PA(LEON_IMASK, (LEON_REGLOAD_PA(LEON_IMASK) & ~(mask)));
+#endif
+ restore_flags(flags);
+}
+
+void leon_enable_irq(unsigned int irq_nr)
+{
+ unsigned long mask, flags;
+ mask = get_irqmask(irq_nr) & LEON_IRQMASK_R;
+ save_and_cli(flags);
+#ifdef CONFIG_LEON_3
+ LEON3_BYPASS_STORE_PA(LEON_IMASK, (LEON3_BYPASS_LOAD_PA(LEON_IMASK) | (mask)));
+#else
+ LEON_REGSTORE_PA(LEON_IMASK, (LEON_REGLOAD_PA(LEON_IMASK) | (mask)));
+#endif
+ restore_flags(flags);
+}
+
+/* We assume the caller is local cli()'d when these are called, or else
+ * very bizarre behavior will result. */
+void leon_disable_pil_irq(unsigned int pil)
+{
+ unsigned long mask = get_irqmask(pil);
+#ifdef CONFIG_LEON_3
+ LEON3_BYPASS_STORE_PA(LEON_IMASK, LEON3_BYPASS_LOAD_PA(LEON_IMASK) & ~(mask));
+#else
+ LEON_REGSTORE_PA(LEON_IMASK, LEON_REGLOAD_PA(LEON_IMASK) & ~(mask));
+#endif
+}
+
+void leon_enable_pil_irq(unsigned int pil)
+{
+ unsigned long mask = get_irqmask(pil);
+#ifdef CONFIG_LEON_3
+ LEON3_BYPASS_STORE_PA(LEON_IMASK, LEON3_BYPASS_LOAD_PA(LEON_IMASK) | (mask));
+#else
+ LEON_REGSTORE_PA(LEON_IMASK, LEON_REGLOAD_PA(LEON_IMASK) | (mask));
+#endif
+}
+
+int leondebug_irq_disable;
+int leon_debug_irqout;
+static int dummy_master_l10_counter;
+static int dummy_master_l10_limit;
+
+
+
+/* called by time_init():timer.c */
+void __init leon_init_timers (irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
+{
+ int irq;
+
+ leondebug_irq_disable = 0;
+ leon_debug_irqout = 0;
+
+#ifdef CONFIG_LEON_3
+ if (LEON3_GpTimer_Regs && LEON3_IrqCtrl_Regs) {
+ //regs -> timerctrl1 = 0;
+ //regs -> timercnt1 = 0;
+ //regs -> timerload1 = (((1000000/100) - 1));
+ LEON3_BYPASS_STORE_PA(&LEON3_GpTimer_Regs ->e[0].val,0);
+ LEON3_BYPASS_STORE_PA(&LEON3_GpTimer_Regs ->e[0].rld,(((1000000/100) - 1)));
+ LEON3_BYPASS_STORE_PA(&LEON3_GpTimer_Regs ->e[0].ctrl,0);
+ } else {
+ while(1) printk("No Timer/irqctrl found\n");
+ }
+#else
+ LEON_REGSTORE_PA(LEON_TCTRL0, 0);
+ LEON_REGSTORE_PA(LEON_TCNT0, 0);
+ LEON_REGSTORE_PA(LEON_TRLD0, (((1000000/HZ) - 1)));
+#endif
+
+ printk("Todo: init master_l10_counter\r\n");
+ master_l10_counter = &dummy_master_l10_counter;
+ master_l10_limit = &dummy_master_l10_limit;
+ dummy_master_l10_counter = 0;
+ dummy_master_l10_limit = 0;
+
+#ifdef CONFIG_LEON_3
+ irq = request_irq(LEON3_GpTimer_Irq,
+ counter_fn,
+ (SA_INTERRUPT | SA_STATIC_ALLOC),
+ "timer", NULL);
+#else
+ irq = request_irq(LEON_INTERRUPT_TIMER1,
+ counter_fn,
+ (SA_INTERRUPT | SA_STATIC_ALLOC),
+ "timer", NULL);
+#endif
+
+ if (irq) {
+ printk("leon_time_init: unable to attach IRQ%d\n",LEON_INTERRUPT_TIMER1);
+ prom_halt();
+ }
+
+#ifdef CONFIG_LEON_3
+ LEON3_BYPASS_STORE_PA(&LEON3_GpTimer_Regs ->e[0].ctrl,
+ LEON3_GPTIMER_EN |
+ LEON3_GPTIMER_RL |
+ LEON3_GPTIMER_LD |
+ LEON3_GPTIMER_IRQEN);
+#else
+ /* enable, load reload into counter, set automatic reload */
+ LEON_REGSTORE_PA(LEON_TCTRL0, 0x7);
+#endif
+}
+
+void leon_clear_clock_irq(void)
+{
+}
+
+void leon_clear_profile_irq(int cpu)
+{
+ BUG();
+}
+
+void leon_load_profile_irq(int cpu, unsigned int limit)
+{
+ BUG();
+}
+
+unsigned int leon_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint)
+{
+ BUG();
+ return 0;
+}
+
+static char *leon_irq_itoa(unsigned int irq)
+{
+ static char buff[16];
+ sprintf(buff, "%d", irq);
+ return buff;
+}
+
+#ifdef CONFIG_SMP
+static void leon_set_cpu_int(int cpu, int level)
+{
+ printk("Not implemented\n");
+ BUG();
+}
+
+static void leon_clear_ipi(int cpu, int level)
+{
+}
+
+static void leon_set_udt(int cpu)
+{
+}
+#endif
+
+void __init leon_init_IRQ(void)
+{
+ sparc_init_timers = leon_init_timers;
+
+ BTFIXUPSET_CALL(sbint_to_irq, leon_sbint_to_irq, BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(enable_irq, leon_enable_irq, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(disable_irq, leon_disable_irq, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(enable_pil_irq, leon_enable_irq, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(disable_pil_irq, leon_disable_irq, BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(clear_clock_irq, leon_clear_clock_irq, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(clear_profile_irq, leon_clear_profile_irq, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(load_profile_irq, leon_load_profile_irq, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(__irq_itoa, leon_irq_itoa, BTFIXUPCALL_NORM);
+
+#ifdef CONFIG_SMP
+ BTFIXUPSET_CALL(set_cpu_int, leon_set_cpu_int, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(clear_cpu_int, leon_clear_ipi, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(set_irq_udt, leon_set_udt, BTFIXUPCALL_NOP);
+#endif
+
+}
diff -Naur ../linux-2.6.10/arch/sparc/kernel/setup.c linux-2.6.10/arch/sparc/kernel/setup.c
--- ../linux-2.6.10/arch/sparc/kernel/setup.c 2004-12-24 22:33:49.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/setup.c 2005-01-03 16:33:28.000000000 +0100
@@ -257,6 +257,13 @@
int i;
unsigned long highest_paddr;
+#ifdef CONFIG_LEON_3
+ amba_init();
+#ifdef CONFIG_GRLIB_GAISLER_APBUART
+ console_print_LEON("Booting Linux\n");
+#endif
+#endif
+
sparc_ttable = (struct tt_entry *) &start;
/* Initialize PROM console and command line. */
@@ -272,6 +279,7 @@
if(!strcmp(&cputypval,"sun4d")) { sparc_cpu_model=sun4d; }
if(!strcmp(&cputypval,"sun4e")) { sparc_cpu_model=sun4e; }
if(!strcmp(&cputypval,"sun4u")) { sparc_cpu_model=sun4u; }
+ if(!strcmp(&cputypval,"leon2")) { sparc_cpu_model=sparc_leon; }
#ifdef CONFIG_SUN4
if (sparc_cpu_model != sun4) {
@@ -279,6 +287,13 @@
prom_halt();
}
#endif
+#if defined(CONFIG_LEON) || defined(CONFIG_LEON_3)
+ /* FIXME: psr ids, asi codes, min nocache pages */
+ if (sparc_cpu_model != sparc_leon) {
+ prom_printf("This kernel is for Leon architecture only.\n");
+ prom_halt();
+ }
+#endif
printk("ARCH: ");
switch(sparc_cpu_model) {
case sun4:
@@ -299,6 +314,9 @@
case sun4u:
printk("SUN4U\n");
break;
+ case sparc_leon:
+ printk("LEON\n");
+ break;
default:
printk("UNKNOWN!\n");
break;
@@ -309,6 +327,10 @@
#elif defined(CONFIG_PROM_CONSOLE)
conswitchp = &prom_con;
#endif
+#ifdef CONFIG_LEON_3
+ amba_prinf_config();
+#endif
+
boot_flags_init(*cmdline_p);
idprom_init();
diff -Naur ../linux-2.6.10/arch/sparc/kernel/time.c linux-2.6.10/arch/sparc/kernel/time.c
--- ../linux-2.6.10/arch/sparc/kernel/time.c 2004-12-24 22:35:50.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/time.c 2005-01-03 16:21:54.000000000 +0100
@@ -43,6 +43,7 @@
#include <asm/sun4paddr.h>
#include <asm/page.h>
#include <asm/pcic.h>
+#include <asm/leon.h>
extern unsigned long wall_jiffies;
@@ -300,6 +301,9 @@
case sun4d:
node = prom_getchild(bootbus = prom_searchsiblings(prom_getchild(cpuunit = prom_searchsiblings(node, "cpu-unit")), "bootbus"));
break;
+ case sparc_leon:
+ node = 0;
+ return;
default:
prom_printf("CLOCK: Unsupported architecture!\n");
prom_halt();
@@ -384,6 +388,11 @@
clock_probe();
sparc_init_timers(timer_interrupt);
+
+ if (sparc_cpu_model == sparc_leon) {
+ local_irq_enable();
+ return;
+ }
#ifdef CONFIG_SUN4
if(idprom->id_machtype == (SM_SUN4 | SM_4_330)) {
@@ -458,8 +467,25 @@
sbus_time_init();
}
+#ifdef CONFIG_LEON_3
+extern volatile LEON3_IrqCtrl_Regs_Map *LEON3_IrqCtrl_Regs; /* drivers/amba/amba.c:amba_init() */
+extern volatile LEON3_GpTimer_Regs_Map *LEON3_GpTimer_Regs;
+extern unsigned long LEON3_GpTimer_Irq; /* drivers/amba.c:amba_init() */
+#endif
+
extern __inline__ unsigned long do_gettimeoffset(void)
{
+ if (sparc_cpu_model == sparc_leon)
+#if defined(CONFIG_LEON) || defined(CONFIG_LEON_3)
+#ifdef CONFIG_LEON_3
+ return ((LEON_REGLOAD_PA(&LEON3_GpTimer_Regs ->e[0].rld)&LEON_TCNT0_MASK) -
+ (LEON_REGLOAD_PA(&LEON3_GpTimer_Regs ->e[0].val)&LEON_TCNT0_MASK)) >> 2;
+#else
+ return ((LEON_REGLOAD_PA(LEON_TRLD0)&LEON_TCNT0_MASK) -
+ (LEON_REGLOAD_PA(LEON_TCNT0)&LEON_TCNT0_MASK)) >> 2;
+#endif
+#endif
+
return (*master_l10_counter >> 10) & 0x1fffff;
}
diff -Naur ../linux-2.6.10/arch/sparc/kernel/traps.c linux-2.6.10/arch/sparc/kernel/traps.c
--- ../linux-2.6.10/arch/sparc/kernel/traps.c 2004-12-24 22:34:49.000000000 +0100
+++ linux-2.6.10/arch/sparc/kernel/traps.c 2005-01-03 16:32:30.000000000 +0100
@@ -26,6 +26,9 @@
#include <asm/kdebug.h>
#include <asm/unistd.h>
#include <asm/traps.h>
+#if defined(CONFIG_LEON) || defined(CONFIG_LEON_3)
+#include <asm/leon.h>
+#endif
/* #define TRAP_DEBUG */
diff -Naur ../linux-2.6.10/arch/sparc/mm/Makefile linux-2.6.10/arch/sparc/mm/Makefile
--- ../linux-2.6.10/arch/sparc/mm/Makefile 2004-12-24 22:35:01.000000000 +0100
+++ linux-2.6.10/arch/sparc/mm/Makefile 2005-01-03 11:36:33.000000000 +0100
@@ -21,3 +21,7 @@
else
obj-y += sun4c.o
endif
+
+ifdef CONFIG_LEON
+obj-y += leon.o
+endif
diff -Naur ../linux-2.6.10/arch/sparc/mm/init.c linux-2.6.10/arch/sparc/mm/init.c
--- ../linux-2.6.10/arch/sparc/mm/init.c 2004-12-24 22:34:32.000000000 +0100
+++ linux-2.6.10/arch/sparc/mm/init.c 2005-01-03 16:04:37.000000000 +0100
@@ -32,6 +32,7 @@
#include <asm/vaddrs.h>
#include <asm/pgalloc.h> /* bug in asm-generic/tlb.h: check_pgt_cache */
#include <asm/tlb.h>
+#include <asm/leon.h>
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@@ -324,6 +325,7 @@
break;
case sun4m:
case sun4d:
+ case sparc_leon:
srmmu_paging_init();
sparc_unmapped_base = 0x50000000;
BTFIXUPSET_SETHI(sparc_unmapped_base, 0x50000000);
@@ -335,6 +337,19 @@
prom_halt();
};
+
+#ifdef CONFIG_OPEN_ETH
+ if (sparc_cpu_model == sparc_leon) {
+ /* until driver/net/open_eth.c is rewritten to access ethermac core's
+ * registers with asi BYPASS, using sun's DVMA_VADDR range */
+ void srmmu_allocate_ptable_skeleton(unsigned long start, unsigned long end);
+
+ srmmu_allocate_ptable_skeleton(DVMA_VADDR, DVMA_END);
+ sparc_mapiorange (0,0xb0000000,LEON_VA_ETHERMAC, PAGE_SIZE);
+
+ }
+#endif
+
/* Initialize the protection map with non-constant, MMU dependent values. */
protection_map[0] = PAGE_NONE;
protection_map[1] = PAGE_READONLY;
diff -Naur ../linux-2.6.10/arch/sparc/mm/leon.c linux-2.6.10/arch/sparc/mm/leon.c
--- ../linux-2.6.10/arch/sparc/mm/leon.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.10/arch/sparc/mm/leon.c 2005-01-03 15:48:15.000000000 +0100
@@ -0,0 +1,168 @@
+/*
+ * do srmmu probe in software
+ * Copyright (C) 2004 Konrad Eisele (eiselekd@web.de), Gaisler Research
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <asm/asi.h>
+#include <asm/leon.h>
+
+#define PFN(x) ((x) >> PAGE_SHIFT)
+extern unsigned long last_valid_pfn;
+
+/* max_mapnr not initialized yet */
+#define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
+
+int srmmu_swprobe_trace = 0;
+unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr) {
+
+ unsigned long ctxtbl;
+ unsigned long pgd,pmd,ped;
+ unsigned long ptr;
+ unsigned long lvl, pte, paddrbase;
+ unsigned long ctx;
+ unsigned long paddr_calc;
+
+ paddrbase = 0;
+
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: trace on\n");
+ }
+
+ if (!(ctxtbl = srmmu_get_ctable_ptr())) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: srmmu_get_ctable_ptr returned 0=>0\n");
+ }
+ return 0;
+ }
+ if (!_pfn_valid(PFN(ctxtbl))) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: !_pfn_valid(%x)=>0\n",PFN(ctxtbl));
+ }
+ return 0;
+ }
+
+ ctx = srmmu_get_context();
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: --- ctx (%x) ---\n",ctx);
+ }
+
+ pgd = LEON_BYPASS_LOAD_PA(ctxtbl+(ctx*4));
+
+ if (((pgd&SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: pgd is entry level 3\n",pgd);
+ }
+ lvl = 3;
+ pte = pgd;
+ paddrbase = pgd & SRMMU_PTE_PMASK;
+ goto ready;
+ }
+ if (((pgd&SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: pgd is invalid => 0\n",pgd);
+ }
+ return 0;
+ }
+
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: --- pgd (%x) ---\n",pgd);
+ }
+
+ ptr = (pgd & SRMMU_PTD_PMASK) << 4;
+ ptr += (((vaddr & 0xff000000)>>24)*4);
+ if (!_pfn_valid(PFN(ptr))) {
+ return 0;
+ }
+
+ pmd = LEON_BYPASS_LOAD_PA(ptr);
+ if (((pmd&SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: pmd is entry level 2\n",pgd);
+ }
+ lvl = 2;
+ pte = pmd;
+ paddrbase = pmd & SRMMU_PTE_PMASK;
+ goto ready;
+ }
+ if (((pmd&SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: pmd is invalid => 0\n",pgd);
+ }
+ return 0;
+ }
+
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: --- pmd (%x) ---\n",pmd);
+ }
+
+ ptr = (pmd & SRMMU_PTD_PMASK) << 4;
+ ptr += (((vaddr & 0x00fc0000)>>18)*4);
+ if (!_pfn_valid(PFN(ptr))){
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: !_pfn_valid(%x)=>0\n",PFN(ptr));
+ }
+ return 0;
+ }
+
+ ped = LEON_BYPASS_LOAD_PA(ptr);
+
+ if (((ped&SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: ped is entry level 1\n",pgd);
+ }
+ lvl = 1;
+ pte = ped;
+ paddrbase = ped & SRMMU_PTE_PMASK;
+ goto ready;
+ }
+ if (((ped&SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: ped is invalid => 0\n",pgd);
+ }
+ return 0;
+ }
+
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: --- ped (%x) ---\n",ped);
+ }
+
+ ptr = (ped & SRMMU_PTD_PMASK) << 4;
+ ptr += (((vaddr & 0x0003f000)>>12)*4);
+ if (!_pfn_valid(PFN(ptr)))
+ return 0;
+
+ ptr = LEON_BYPASS_LOAD_PA(ptr);
+ if (((ptr&SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: ptr is entry level 0\n",pgd);
+ }
+ lvl = 0;
+ pte = ptr;
+ paddrbase = ptr & SRMMU_PTE_PMASK;
+ goto ready;
+ }
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: ptr is invalid => 0\n",pgd);
+ }
+ return 0;
+
+ ready:
+ switch (lvl) {
+ case 0: paddr_calc = (vaddr & 0x00000fff) | ((pte&~0xff)<<4); break;
+ case 1: paddr_calc = (vaddr & 0x0003ffff) | ((pte&~0xff)<<4); break;
+ case 2: paddr_calc = (vaddr & 0x00ffffff) | ((pte&~0xff)<<4); break;
+ default:
+ case 3: paddr_calc = vaddr; break;
+ }
+ if (srmmu_swprobe_trace) {
+ printk("swprobe: padde %x\n",paddr_calc);
+ }
+ if (paddr) {
+ *paddr = paddr_calc;
+ }
+ return paddrbase;
+}
+
+
diff -Naur ../linux-2.6.10/arch/sparc/mm/loadmmu.c linux-2.6.10/arch/sparc/mm/loadmmu.c
--- ../linux-2.6.10/arch/sparc/mm/loadmmu.c 2004-12-24 22:35:00.000000000 +0100
+++ linux-2.6.10/arch/sparc/mm/loadmmu.c 2005-01-03 11:36:33.000000000 +0100
@@ -36,6 +36,7 @@
break;
case sun4m:
case sun4d:
+ case sparc_leon:
ld_mmu_srmmu();
break;
default:
diff -Naur ../linux-2.6.10/arch/sparc/mm/srmmu.c linux-2.6.10/arch/sparc/mm/srmmu.c
--- ../linux-2.6.10/arch/sparc/mm/srmmu.c 2004-12-24 22:34:58.000000000 +0100
+++ linux-2.6.10/arch/sparc/mm/srmmu.c 2005-01-03 16:26:56.000000000 +0100
@@ -6,6 +6,7 @@
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1999,2000 Anton Blanchard (anton@samba.org)
+ * Copyright (C) 2004 Konrad Eisele (eiselekd@web.de), Gaisler Research
*/
#include <linux/config.h>
@@ -48,6 +49,7 @@
#include <asm/tsunami.h>
#include <asm/swift.h>
#include <asm/turbosparc.h>
+#include <asm/leon.h>
#include <asm/btfixup.h>
@@ -568,6 +570,13 @@
if (is_hypersparc)
hyper_flush_whole_icache();
+#if (defined CONFIG_LEON || defined CONFIG_LEON_3)
+
+ flush_tlb_mm(0);
+ leon_flush_cache_all();
+
+#endif
+
srmmu_set_context(mm->context);
}
@@ -1287,7 +1296,11 @@
srmmu_nocache_calcsize();
srmmu_nocache_init();
- srmmu_inherit_prom_mappings(0xfe400000,(LINUX_OPPROM_ENDVM-PAGE_SIZE));
+ if (sparc_cpu_model == sparc_leon) {
+ leon_inherit_prom_mappings(0xfe400000,(LINUX_OPPROM_ENDVM-PAGE_SIZE));
+ } else {
+ srmmu_inherit_prom_mappings(0xfe400000,(LINUX_OPPROM_ENDVM-PAGE_SIZE));
+ }
map_kernel();
/* ctx table has to be physically aligned to its size */
@@ -1981,6 +1994,133 @@
poke_srmmu = poke_viking;
}
+void __init leon_inherit_prom_mappings(unsigned long start,unsigned long end)
+{
+ pgd_t *pgdp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+ int what = 0; /* 0 = normal-pte, 1 = pmd-level pte, 2 = pgd-level pte */
+ unsigned long prompte;
+
+ while(start <= end) {
+ if (start == 0)
+ break; /* probably wrap around */
+ if(start == 0xfef00000)
+ start = KADB_DEBUGGER_BEGVM;
+ if(!(prompte = srmmu_swprobe(start,0))) {
+ start += PAGE_SIZE;
+ continue;
+ }
+
+ /* A red snapper, see what it really is. */
+ what = 0;
+
+ if(!(start & ~(SRMMU_REAL_PMD_MASK))) {
+ if(srmmu_swprobe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE, 0) == prompte)
+ what = 1;
+ }
+
+ if(!(start & ~(SRMMU_PGDIR_MASK))) {
+ if(srmmu_swprobe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE, 0) ==
+ prompte)
+ what = 2;
+ }
+
+ pgdp = pgd_offset_k(start);
+ if(what == 2) {
+ *(pgd_t *)__nocache_fix(pgdp) = __pgd(prompte);
+ start += SRMMU_PGDIR_SIZE;
+ continue;
+ }
+ if(srmmu_pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
+ pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
+ if (pmdp == NULL)
+ early_pgtable_allocfail("pmd");
+ memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
+ srmmu_pgd_set(__nocache_fix(pgdp), pmdp);
+ }
+ pmdp = srmmu_pmd_offset(__nocache_fix(pgdp), start);
+ if(srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
+ ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE,
+ PTE_SIZE);
+ if (ptep == NULL)
+ early_pgtable_allocfail("pte");
+ memset(__nocache_fix(ptep), 0, PTE_SIZE);
+ srmmu_pmd_set(__nocache_fix(pmdp), ptep);
+ }
+ if(what == 1) {
+ /*
+ * We bend the rule where all 16 PTPs in a pmd_t point
+ * inside the same PTE page, and we leak a perfectly
+ * good hardware PTE piece. Alternatives seem worse.
+ */
+ unsigned int x; /* Index of HW PMD in soft cluster */
+ x = (start >> PMD_SHIFT) & 15;
+ *(unsigned long *)__nocache_fix(&pmdp->pmdv[x]) = prompte;
+ start += SRMMU_REAL_PMD_SIZE;
+ continue;
+ }
+ ptep = srmmu_pte_offset(__nocache_fix(pmdp), start);
+ *(pte_t *)__nocache_fix(ptep) = __pte(prompte);
+ start += PAGE_SIZE;
+ }
+}
+
+void leon_flush_cache_all (void)
+{
+#if defined( CONFIG_LEON) || defined(CONFIG_LEON_3)
+#ifdef CONFIG_LEON_3
+ __asm__ __volatile__(" flush "); //iflush
+ __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t": :
+ "i" (ASI_LEON_DFLUSH) : "memory");
+#else
+ __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t": :
+ "i" (ASI_LEON_IFLUSH) : "memory");
+ __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t": :
+ "i" (ASI_LEON_DFLUSH) : "memory");
+#endif
+#endif
+}
+
+void leon_flush_tlb_all (void)
+{
+#if defined( CONFIG_LEON) || defined(CONFIG_LEON_3)
+ leon_flush_cache_all();
+ __asm__ __volatile__("sta %%g0, [%0] %1\n\t": :
+ "r" (0x400),
+ "i" (ASI_LEON_MMUFLUSH) : "memory");
+#endif
+}
+
+static void __init poke_leonsparc(void)
+{
+}
+
+static void __init init_leon(void) {
+
+ srmmu_name = "Leon2";
+
+ BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_mm, leon_flush_cache_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_page, leon_flush_cache_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_range, leon_flush_cache_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_page_for_dma, leon_flush_cache_all, BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(flush_tlb_all, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_mm, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_page, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_range, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(__flush_page_to_ram, leon_flush_cache_all, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(flush_sig_insns, leon_flush_cache_all, BTFIXUPCALL_NOP);
+
+ poke_srmmu = poke_leonsparc;
+
+ srmmu_cache_pagetables = 0;
+}
+
+
+
/* Probe for the srmmu chip version. */
static void __init get_srmmu_type(void)
{
@@ -1990,11 +2130,20 @@
srmmu_modtype = SRMMU_INVAL_MOD;
hwbug_bitmask = 0;
- mreg = srmmu_get_mmureg(); psr = get_psr();
+ mreg = srmmu_get_mmureg();
+ psr = get_psr();
mod_typ = (mreg & 0xf0000000) >> 28;
mod_rev = (mreg & 0x0f000000) >> 24;
psr_typ = (psr >> 28) & 0xf;
psr_vers = (psr >> 24) & 0xf;
+#ifdef CONFIG_LEON
+ psr_typ = 0xf; /* hardcoded ids for older models/simulators */
+ psr_vers = 2;
+#endif
+ if(psr_typ == 0xf) {
+ init_leon();
+ return;
+ }
/* First, check for HyperSparc or Cypress. */
if(mod_typ == 1) {
reply other threads:[~2005-01-04 19:31 UTC|newest]
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