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Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/kernel/processor.c')
-rw-r--r--target/linux/ubicom32/files/arch/ubicom32/kernel/processor.c348
1 files changed, 0 insertions, 348 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/kernel/processor.c b/target/linux/ubicom32/files/arch/ubicom32/kernel/processor.c
deleted file mode 100644
index 55d1bdf623..0000000000
--- a/target/linux/ubicom32/files/arch/ubicom32/kernel/processor.c
+++ /dev/null
@@ -1,348 +0,0 @@
-/*
- * arch/ubicom32/kernel/processor.c
- * Ubicom32 architecture processor info implementation.
- *
- * (C) Copyright 2009, Ubicom, Inc.
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * The Ubicom32 Linux Kernel Port 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.
- *
- * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
- * see <http://www.gnu.org/licenses/>.
- *
- * Ubicom32 implementation derived from (with many thanks):
- * arch/m68knommu
- * arch/blackfin
- * arch/parisc
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/profile.h>
-#include <linux/clocksource.h>
-#include <linux/types.h>
-#include <linux/seq_file.h>
-#include <linux/delay.h>
-#include <linux/cpu.h>
-#include <asm/devtree.h>
-#include <asm/processor.h>
-#include <asm/cpu.h>
-#include <asm/ocm_size.h>
-
-struct procnode {
- struct devtree_node dn;
- unsigned int threads;
- unsigned int timers;
- unsigned int frequency;
- unsigned int ddr_frequency;
- unsigned int interrupt0;
- unsigned int interrupt1;
- void *socm;
- void *eocm;
- void *sdram;
- void *edram;
- unsigned int arch_version;
- void *os_syscall_begin;
- void *os_syscall_end;
-};
-
-struct procnode *pn;
-
-/*
- * show_processorinfo()
- * Print the actual processor information.
- */
-static void show_processorinfo(struct seq_file *m)
-{
- char *cpu, *mmu, *fpu;
- unsigned int clockfreq;
- unsigned int chipid;
-
- cpu = CPU;
- mmu = "none";
- fpu = "none";
-
- asm volatile (
- "move.4 %0, CHIP_ID \n\t"
- : "=r" (chipid)
- );
-
- /*
- * General Processor Information.
- */
- seq_printf(m, "Vendor:\t\t%s\n", "Ubicom");
- seq_printf(m, "CPU:\t\t%s\n", cpu);
- seq_printf(m, "MMU:\t\t%s\n", mmu);
- seq_printf(m, "FPU:\t\t%s\n", fpu);
- seq_printf(m, "Arch:\t\t%hx\n", chipid >> 16);
- seq_printf(m, "Rev:\t\t%hx\n", (chipid & 0xffff));
-
- /*
- * Now compute the clock frequency in Mhz.
- */
- clockfreq = processor_frequency();
- seq_printf(m, "Clock Freq:\t%u.0 MHz\n",
- clockfreq / 1000000);
- seq_printf(m, "DDR Freq:\t%u.0 MHz\n",
- pn ? pn->ddr_frequency / 1000000 : 0);
- seq_printf(m, "BogoMips:\t%lu.%02lu\n",
- (loops_per_jiffy * HZ) / 500000,
- ((loops_per_jiffy * HZ) / 5000) % 100);
- seq_printf(m, "Calibration:\t%lu loops\n", (loops_per_jiffy * HZ));
-}
-
-/*
- * show_cpuinfo()
- * Get CPU information for use by the procfs.
- */
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- unsigned long n = (unsigned long)v - 1;
-
-#if defined(CONFIG_SMP)
- struct cpuinfo_ubicom32 *p = &per_cpu(cpu_data, n);
-#endif
-
- /*
- * Print the general processor information on the first
- * call.
- */
- if (n == 0) {
- show_processorinfo(m);
- }
-
-#if defined(CONFIG_SMP)
- /*
- * For each hwthread, print if this hwthread is running Linux
- * or is an I/O thread.
- */
- if (cpu_isset(n, cpu_online_map)) {
- seq_printf(m, "cpu[%02lu]:\tthread id - %lu\n", n, p->tid);
- } else {
- seq_printf(m, "cpu[%02lu]:\toff-line\n", n);
- }
-#endif
- return 0;
-
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- unsigned long i = *pos;
-
- return i < NR_CPUS ? (void *)(i + 1) : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
-/*
- * processor_timers()
- * Returns the timers available to Linux.
- */
-unsigned int processor_timers(void)
-{
- if (!pn) {
- return 0;
- }
- return pn->timers;
-}
-
-/*
- * processor_threads()
- * Returns the threads available to Linux.
- */
-unsigned int processor_threads(void)
-{
- if (!pn) {
- return 0;
- }
- return pn->threads;
-}
-
-/*
- * processor_frequency()
- * Returns the frequency of the system clock.
- */
-unsigned int processor_frequency(void)
-{
- if (!pn) {
- return 0;
- }
- return pn->frequency;
-}
-EXPORT_SYMBOL(processor_frequency);
-
-/*
- * processor_interrupts()
- * Return the interrupts that are setup at boot time.
- */
-int processor_interrupts(unsigned int *int0, unsigned int *int1)
-{
- if (!pn) {
- return -EFAULT;
- }
-
- if (int0) {
- *int0 = pn->interrupt0;
- }
-
- if (int1) {
- *int1 = pn->interrupt1;
- }
- return 0;
-}
-
-/*
- * processor_ocm()
- * Returns the start and end of OCM available to Linux.
- */
-void processor_ocm(unsigned long *socm, unsigned long *eocm)
-{
- *socm = (unsigned long)pn->socm;
- *eocm = (unsigned long)pn->eocm;
-}
-
-/*
- * processor_dram()
- * Returns the start and end of dram available to Linux.
- */
-void processor_dram(unsigned long *sdram, unsigned long *edram)
-{
- *sdram = (unsigned long)pn->sdram;
- *edram = (unsigned long)pn->edram;
-}
-
-/*
- * processor_validate_failed()
- * Returns the dram available to Linux.
- */
-static noinline void processor_validate_failed(void)
-{
- while (1)
- THREAD_STALL;
-}
-
-/*
- * processor_validate()
- * Validates the procnode against limitations of this link/built.
- */
-static void processor_validate(void)
-{
- void *dram_start = (void *)(KERNELSTART);
- void *dram_end = (void *)(SDRAMSTART + CONFIG_MIN_RAMSIZE);
-#if APP_OCM_CODE_SIZE || APP_OCM_DATA_SIZE
- void *ocm_code_start = (void *)(OCMSTART + APP_OCM_CODE_SIZE);
- void *ocm_data_end = (void *)(OCMEND - APP_OCM_DATA_SIZE);
-#endif
- extern void __os_syscall_begin;
- extern void __os_syscall_end;
- int proc_node_valid = 1;
-
- if (!pn) {
- printk(KERN_ERR "ERROR: processor node not found\n");
- goto error;
- }
-
-
- if (dram_start < pn->sdram || dram_end > pn->edram) {
- printk(KERN_ERR "ERROR: processor dram mismatch %p-%p "
- "available but we are expecting %p-%p\n",
- pn->sdram, pn->edram, dram_start, dram_end);
- proc_node_valid = 0;
- } else {
- printk(KERN_ERR "processor dram %p-%p, expecting %p-%p\n",
- pn->sdram, pn->edram, dram_start, dram_end);
- }
- if (&__os_syscall_begin < pn->os_syscall_begin ||
- &__os_syscall_end > pn->os_syscall_end) {
- printk(KERN_ERR "ERROR: processor syscall area mismatch "
- "%p-%p available but we are expecting %p-%p\n",
- pn->os_syscall_begin, pn->os_syscall_end,
- &__os_syscall_begin, &__os_syscall_end);
- proc_node_valid = 0;
- } else {
- printk(KERN_ERR "processor dram %p-%p, expecting %p-%p\n",
- pn->sdram, pn->edram, dram_start, dram_end);
- }
-#if APP_OCM_CODE_SIZE || APP_OCM_DATA_SIZE
- if (ocm_code_start < pn->socm || ocm_data_end > pn->eocm) {
- printk(KERN_ERR "ERROR: processor ocm mismatch %p-%p "
- "available but we are expecting %p-%p\n",
- pn->socm, pn->eocm, ocm_code_start, ocm_data_end);
- proc_node_valid = 0;
- } else {
- printk(KERN_INFO "processor ocm %p-%p, expecting %p-%p\n",
- pn->socm, pn->eocm, ocm_code_start, ocm_data_end);
-
- }
-#endif
-
- if (UBICOM32_ARCH_VERSION != pn->arch_version) {
- printk(KERN_ERR "ERROR: processor arch mismatch, kernel"
- "compiled for %d found %d\n",
- UBICOM32_ARCH_VERSION, pn->arch_version);
- proc_node_valid = 0;
- }
-
- if (proc_node_valid)
- return;
-error:
- processor_validate_failed();
-}
-
-void __init processor_init(void)
-{
- /*
- * If we do not have a trap node in the device tree, we leave the fault
- * handling to the underlying hardware.
- */
- pn = (struct procnode *)devtree_find_node("processor");
-
- processor_validate();
-
- /*
- * If necessary correct the initial range registers to cover the
- * complete physical space
- */
- if (pn->edram > (void *)(SDRAMSTART + CONFIG_MIN_RAMSIZE)) {
- printk(KERN_INFO "updating range registers for expanded dram\n");
- asm volatile (
- " move.4 D_RANGE1_HI, %0 \t\n"
- " move.4 I_RANGE0_HI, %0 \t\n"
-#ifdef CONFIG_PROTECT_KERNEL
- " move.4 D_RANGE2_HI, %0 \t\n"
- " move.4 I_RANGE2_HI, %0 \t\n"
-#endif
- : : "a"((unsigned long)pn->edram - 4)
- );
- }
-
-}
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