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-rw-r--r--arch/blackfin/kernel/setup.c902
1 files changed, 902 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
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--- /dev/null
+++ b/arch/blackfin/kernel/setup.c
@@ -0,0 +1,902 @@
+/*
+ * File: arch/blackfin/kernel/setup.c
+ * Based on:
+ * Author:
+ *
+ * Created:
+ * Description:
+ *
+ * Modified:
+ * Copyright 2004-2006 Analog Devices Inc.
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/delay.h>
+#include <linux/console.h>
+#include <linux/bootmem.h>
+#include <linux/seq_file.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/tty.h>
+
+#include <linux/ext2_fs.h>
+#include <linux/cramfs_fs.h>
+#include <linux/romfs_fs.h>
+
+#include <asm/cacheflush.h>
+#include <asm/blackfin.h>
+#include <asm/cplbinit.h>
+
+unsigned long memory_start, memory_end, physical_mem_end;
+unsigned long reserved_mem_dcache_on;
+unsigned long reserved_mem_icache_on;
+EXPORT_SYMBOL(memory_start);
+EXPORT_SYMBOL(memory_end);
+EXPORT_SYMBOL(physical_mem_end);
+EXPORT_SYMBOL(_ramend);
+
+#ifdef CONFIG_MTD_UCLINUX
+unsigned long memory_mtd_end, memory_mtd_start, mtd_size;
+unsigned long _ebss;
+EXPORT_SYMBOL(memory_mtd_end);
+EXPORT_SYMBOL(memory_mtd_start);
+EXPORT_SYMBOL(mtd_size);
+#endif
+
+char command_line[COMMAND_LINE_SIZE];
+
+#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+static void generate_cpl_tables(void);
+#endif
+
+void __init bf53x_cache_init(void)
+{
+#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+ generate_cpl_tables();
+#endif
+
+#ifdef CONFIG_BLKFIN_CACHE
+ bfin_icache_init();
+ printk(KERN_INFO "Instruction Cache Enabled\n");
+#endif
+
+#ifdef CONFIG_BLKFIN_DCACHE
+ bfin_dcache_init();
+ printk(KERN_INFO "Data Cache Enabled"
+# if defined CONFIG_BLKFIN_WB
+ " (write-back)"
+# elif defined CONFIG_BLKFIN_WT
+ " (write-through)"
+# endif
+ "\n");
+#endif
+}
+
+void bf53x_relocate_l1_mem(void)
+{
+ unsigned long l1_code_length;
+ unsigned long l1_data_a_length;
+ unsigned long l1_data_b_length;
+
+ l1_code_length = _etext_l1 - _stext_l1;
+ if (l1_code_length > L1_CODE_LENGTH)
+ l1_code_length = L1_CODE_LENGTH;
+ /* cannot complain as printk is not available as yet.
+ * But we can continue booting and complain later!
+ */
+
+ /* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
+ dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
+
+ l1_data_a_length = _ebss_l1 - _sdata_l1;
+ if (l1_data_a_length > L1_DATA_A_LENGTH)
+ l1_data_a_length = L1_DATA_A_LENGTH;
+
+ /* Copy _sdata_l1 to _ebss_l1 to L1 data bank A SRAM */
+ dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
+
+ l1_data_b_length = _ebss_b_l1 - _sdata_b_l1;
+ if (l1_data_b_length > L1_DATA_B_LENGTH)
+ l1_data_b_length = L1_DATA_B_LENGTH;
+
+ /* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */
+ dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
+ l1_data_a_length, l1_data_b_length);
+
+}
+
+/*
+ * Initial parsing of the command line. Currently, we support:
+ * - Controlling the linux memory size: mem=xxx[KMG]
+ * - Controlling the physical memory size: max_mem=xxx[KMG][$][#]
+ * $ -> reserved memory is dcacheable
+ * # -> reserved memory is icacheable
+ */
+static __init void parse_cmdline_early(char *cmdline_p)
+{
+ char c = ' ', *to = cmdline_p;
+ unsigned int memsize;
+ for (;;) {
+ if (c == ' ') {
+
+ if (!memcmp(to, "mem=", 4)) {
+ to += 4;
+ memsize = memparse(to, &to);
+ if (memsize)
+ _ramend = memsize;
+
+ } else if (!memcmp(to, "max_mem=", 8)) {
+ to += 8;
+ memsize = memparse(to, &to);
+ if (memsize) {
+ physical_mem_end = memsize;
+ if (*to != ' ') {
+ if (*to == '$'
+ || *(to + 1) == '$')
+ reserved_mem_dcache_on =
+ 1;
+ if (*to == '#'
+ || *(to + 1) == '#')
+ reserved_mem_icache_on =
+ 1;
+ }
+ }
+ }
+
+ }
+ c = *(to++);
+ if (!c)
+ break;
+ }
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+ int bootmap_size;
+ unsigned long l1_length, sclk, cclk;
+#ifdef CONFIG_MTD_UCLINUX
+ unsigned long mtd_phys = 0;
+#endif
+
+ cclk = get_cclk();
+ sclk = get_sclk();
+
+#if !defined(CONFIG_BFIN_KERNEL_CLOCK) && defined(ANOMALY_05000273)
+ if (cclk == sclk)
+ panic("ANOMALY 05000273, SCLK can not be same as CCLK");
+#endif
+
+#if defined(ANOMALY_05000266)
+ bfin_read_IMDMA_D0_IRQ_STATUS();
+ bfin_read_IMDMA_D1_IRQ_STATUS();
+#endif
+
+#ifdef DEBUG_SERIAL_EARLY_INIT
+ bfin_console_init(); /* early console registration */
+ /* this give a chance to get printk() working before crash. */
+#endif
+
+#if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
+ /* we need to initialize the Flashrom device here since we might
+ * do things with flash early on in the boot
+ */
+ flash_probe();
+#endif
+
+#if defined(CONFIG_CMDLINE_BOOL)
+ memset(command_line, 0, sizeof(command_line));
+ strncpy(&command_line[0], CONFIG_CMDLINE, sizeof(command_line));
+ command_line[sizeof(command_line) - 1] = 0;
+#endif
+
+ /* Keep a copy of command line */
+ *cmdline_p = &command_line[0];
+ memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
+ boot_command_line[COMMAND_LINE_SIZE - 1] = 0;
+
+ /* setup memory defaults from the user config */
+ physical_mem_end = 0;
+ _ramend = CONFIG_MEM_SIZE * 1024 * 1024;
+
+ parse_cmdline_early(&command_line[0]);
+
+ if (physical_mem_end == 0)
+ physical_mem_end = _ramend;
+
+ /* by now the stack is part of the init task */
+ memory_end = _ramend - DMA_UNCACHED_REGION;
+
+ _ramstart = (unsigned long)__bss_stop;
+ memory_start = PAGE_ALIGN(_ramstart);
+
+#if defined(CONFIG_MTD_UCLINUX)
+ /* generic memory mapped MTD driver */
+ memory_mtd_end = memory_end;
+
+ mtd_phys = _ramstart;
+ mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 8)));
+
+# if defined(CONFIG_EXT2_FS) || defined(CONFIG_EXT3_FS)
+ if (*((unsigned short *)(mtd_phys + 0x438)) == EXT2_SUPER_MAGIC)
+ mtd_size =
+ PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x404)) << 10);
+# endif
+
+# if defined(CONFIG_CRAMFS)
+ if (*((unsigned long *)(mtd_phys)) == CRAMFS_MAGIC)
+ mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x4)));
+# endif
+
+# if defined(CONFIG_ROMFS_FS)
+ if (((unsigned long *)mtd_phys)[0] == ROMSB_WORD0
+ && ((unsigned long *)mtd_phys)[1] == ROMSB_WORD1)
+ mtd_size =
+ PAGE_ALIGN(be32_to_cpu(((unsigned long *)mtd_phys)[2]));
+# if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
+ /* Due to a Hardware Anomaly we need to limit the size of usable
+ * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
+ * 05000263 - Hardware loop corrupted when taking an ICPLB exception
+ */
+# if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
+ if (memory_end >= 56 * 1024 * 1024)
+ memory_end = 56 * 1024 * 1024;
+# else
+ if (memory_end >= 60 * 1024 * 1024)
+ memory_end = 60 * 1024 * 1024;
+# endif /* CONFIG_DEBUG_HUNT_FOR_ZERO */
+# endif /* ANOMALY_05000263 */
+# endif /* CONFIG_ROMFS_FS */
+
+ memory_end -= mtd_size;
+
+ if (mtd_size == 0) {
+ console_init();
+ panic("Don't boot kernel without rootfs attached.\n");
+ }
+
+ /* Relocate MTD image to the top of memory after the uncached memory area */
+ dma_memcpy((char *)memory_end, __bss_stop, mtd_size);
+
+ memory_mtd_start = memory_end;
+ _ebss = memory_mtd_start; /* define _ebss for compatible */
+#endif /* CONFIG_MTD_UCLINUX */
+
+#if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
+ /* Due to a Hardware Anomaly we need to limit the size of usable
+ * instruction memory to max 60MB, 56 if HUNT_FOR_ZERO is on
+ * 05000263 - Hardware loop corrupted when taking an ICPLB exception
+ */
+#if (defined(CONFIG_DEBUG_HUNT_FOR_ZERO))
+ if (memory_end >= 56 * 1024 * 1024)
+ memory_end = 56 * 1024 * 1024;
+#else
+ if (memory_end >= 60 * 1024 * 1024)
+ memory_end = 60 * 1024 * 1024;
+#endif /* CONFIG_DEBUG_HUNT_FOR_ZERO */
+ printk(KERN_NOTICE "Warning: limiting memory to %liMB due to hardware anomaly 05000263\n", memory_end >> 20);
+#endif /* ANOMALY_05000263 */
+
+#if !defined(CONFIG_MTD_UCLINUX)
+ memory_end -= SIZE_4K; /*In case there is no valid CPLB behind memory_end make sure we don't get to close*/
+#endif
+ init_mm.start_code = (unsigned long)_stext;
+ init_mm.end_code = (unsigned long)_etext;
+ init_mm.end_data = (unsigned long)_edata;
+ init_mm.brk = (unsigned long)0;
+
+ init_leds();
+
+ printk(KERN_INFO "Blackfin support (C) 2004-2007 Analog Devices, Inc.\n");
+ printk(KERN_INFO "Compiled for ADSP-%s Rev 0.%d\n", CPU, bfin_compiled_revid());
+ if (bfin_revid() != bfin_compiled_revid())
+ printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
+ bfin_compiled_revid(), bfin_revid());
+ if (bfin_revid() < SUPPORTED_REVID)
+ printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",
+ CPU, bfin_revid());
+ printk(KERN_INFO "Blackfin Linux support by http://blackfin.uclinux.org/\n");
+
+ printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu Mhz System Clock\n",
+ cclk / 1000000, sclk / 1000000);
+
+#if defined(ANOMALY_05000273)
+ if ((cclk >> 1) <= sclk)
+ printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
+#endif
+
+ printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
+ printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
+
+ printk(KERN_INFO "Memory map:\n"
+ KERN_INFO " text = 0x%p-0x%p\n"
+ KERN_INFO " init = 0x%p-0x%p\n"
+ KERN_INFO " data = 0x%p-0x%p\n"
+ KERN_INFO " stack = 0x%p-0x%p\n"
+ KERN_INFO " bss = 0x%p-0x%p\n"
+ KERN_INFO " available = 0x%p-0x%p\n"
+#ifdef CONFIG_MTD_UCLINUX
+ KERN_INFO " rootfs = 0x%p-0x%p\n"
+#endif
+#if DMA_UNCACHED_REGION > 0
+ KERN_INFO " DMA Zone = 0x%p-0x%p\n"
+#endif
+ , _stext, _etext,
+ __init_begin, __init_end,
+ _sdata, _edata,
+ (void*)&init_thread_union, (void*)((int)(&init_thread_union) + 0x2000),
+ __bss_start, __bss_stop,
+ (void*)_ramstart, (void*)memory_end
+#ifdef CONFIG_MTD_UCLINUX
+ , (void*)memory_mtd_start, (void*)(memory_mtd_start + mtd_size)
+#endif
+#if DMA_UNCACHED_REGION > 0
+ , (void*)(_ramend - DMA_UNCACHED_REGION), (void*)(_ramend)
+#endif
+ );
+
+ /*
+ * give all the memory to the bootmap allocator, tell it to put the
+ * boot mem_map at the start of memory
+ */
+ bootmap_size = init_bootmem_node(NODE_DATA(0), memory_start >> PAGE_SHIFT, /* map goes here */
+ PAGE_OFFSET >> PAGE_SHIFT,
+ memory_end >> PAGE_SHIFT);
+ /*
+ * free the usable memory, we have to make sure we do not free
+ * the bootmem bitmap so we then reserve it after freeing it :-)
+ */
+ free_bootmem(memory_start, memory_end - memory_start);
+
+ reserve_bootmem(memory_start, bootmap_size);
+ /*
+ * get kmalloc into gear
+ */
+ paging_init();
+
+ /* check the size of the l1 area */
+ l1_length = _etext_l1 - _stext_l1;
+ if (l1_length > L1_CODE_LENGTH)
+ panic("L1 memory overflow\n");
+
+ l1_length = _ebss_l1 - _sdata_l1;
+ if (l1_length > L1_DATA_A_LENGTH)
+ panic("L1 memory overflow\n");
+
+ bf53x_cache_init();
+
+#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
+# if defined(CONFIG_BFIN_SHARED_FLASH_ENET) && defined(CONFIG_BFIN533_STAMP)
+ /* setup BF533_STAMP CPLD to route AMS3 to Ethernet MAC */
+ bfin_write_FIO_DIR(bfin_read_FIO_DIR() | (1 << CONFIG_ENET_FLASH_PIN));
+ bfin_write_FIO_FLAG_S(1 << CONFIG_ENET_FLASH_PIN);
+ SSYNC();
+# endif
+# if defined (CONFIG_BFIN561_EZKIT)
+ bfin_write_FIO0_DIR(bfin_read_FIO0_DIR() | (1 << 12));
+ SSYNC();
+# endif /* defined (CONFIG_BFIN561_EZKIT) */
+#endif
+
+ printk(KERN_INFO "Hardware Trace Enabled\n");
+ bfin_write_TBUFCTL(0x03);
+}
+
+#if defined(CONFIG_BF561)
+static struct cpu cpu[2];
+#else
+static struct cpu cpu[1];
+#endif
+static int __init topology_init(void)
+{
+#if defined (CONFIG_BF561)
+ register_cpu(&cpu[0], 0);
+ register_cpu(&cpu[1], 1);
+ return 0;
+#else
+ return register_cpu(cpu, 0);
+#endif
+}
+
+subsys_initcall(topology_init);
+
+#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+u16 lock_kernel_check(u32 start, u32 end)
+{
+ if ((start <= (u32) _stext && end >= (u32) _end)
+ || (start >= (u32) _stext && end <= (u32) _end))
+ return IN_KERNEL;
+ return 0;
+}
+
+static unsigned short __init
+fill_cplbtab(struct cplb_tab *table,
+ unsigned long start, unsigned long end,
+ unsigned long block_size, unsigned long cplb_data)
+{
+ int i;
+
+ switch (block_size) {
+ case SIZE_4M:
+ i = 3;
+ break;
+ case SIZE_1M:
+ i = 2;
+ break;
+ case SIZE_4K:
+ i = 1;
+ break;
+ case SIZE_1K:
+ default:
+ i = 0;
+ break;
+ }
+
+ cplb_data = (cplb_data & ~(3 << 16)) | (i << 16);
+
+ while ((start < end) && (table->pos < table->size)) {
+
+ table->tab[table->pos++] = start;
+
+ if (lock_kernel_check(start, start + block_size) == IN_KERNEL)
+ table->tab[table->pos++] =
+ cplb_data | CPLB_LOCK | CPLB_DIRTY;
+ else
+ table->tab[table->pos++] = cplb_data;
+
+ start += block_size;
+ }
+ return 0;
+}
+
+static unsigned short __init
+close_cplbtab(struct cplb_tab *table)
+{
+
+ while (table->pos < table->size) {
+
+ table->tab[table->pos++] = 0;
+ table->tab[table->pos++] = 0; /* !CPLB_VALID */
+ }
+ return 0;
+}
+
+static void __init generate_cpl_tables(void)
+{
+
+ u16 i, j, process;
+ u32 a_start, a_end, as, ae, as_1m;
+
+ struct cplb_tab *t_i = NULL;
+ struct cplb_tab *t_d = NULL;
+ struct s_cplb cplb;
+
+ cplb.init_i.size = MAX_CPLBS;
+ cplb.init_d.size = MAX_CPLBS;
+ cplb.switch_i.size = MAX_SWITCH_I_CPLBS;
+ cplb.switch_d.size = MAX_SWITCH_D_CPLBS;
+
+ cplb.init_i.pos = 0;
+ cplb.init_d.pos = 0;
+ cplb.switch_i.pos = 0;
+ cplb.switch_d.pos = 0;
+
+ cplb.init_i.tab = icplb_table;
+ cplb.init_d.tab = dcplb_table;
+ cplb.switch_i.tab = ipdt_table;
+ cplb.switch_d.tab = dpdt_table;
+
+ cplb_data[SDRAM_KERN].end = memory_end;
+
+#ifdef CONFIG_MTD_UCLINUX
+ cplb_data[SDRAM_RAM_MTD].start = memory_mtd_start;
+ cplb_data[SDRAM_RAM_MTD].end = memory_mtd_start + mtd_size;
+ cplb_data[SDRAM_RAM_MTD].valid = mtd_size > 0;
+# if defined(CONFIG_ROMFS_FS)
+ cplb_data[SDRAM_RAM_MTD].attr |= I_CPLB;
+
+ /*
+ * The ROMFS_FS size is often not multiple of 1MB.
+ * This can cause multiple CPLB sets covering the same memory area.
+ * This will then cause multiple CPLB hit exceptions.
+ * Workaround: We ensure a contiguous memory area by extending the kernel
+ * memory section over the mtd section.
+ * For ROMFS_FS memory must be covered with ICPLBs anyways.
+ * So there is no difference between kernel and mtd memory setup.
+ */
+
+ cplb_data[SDRAM_KERN].end = memory_mtd_start + mtd_size;;
+ cplb_data[SDRAM_RAM_MTD].valid = 0;
+
+# endif
+#else
+ cplb_data[SDRAM_RAM_MTD].valid = 0;
+#endif
+
+ cplb_data[SDRAM_DMAZ].start = _ramend - DMA_UNCACHED_REGION;
+ cplb_data[SDRAM_DMAZ].end = _ramend;
+
+ cplb_data[RES_MEM].start = _ramend;
+ cplb_data[RES_MEM].end = physical_mem_end;
+
+ if (reserved_mem_dcache_on)
+ cplb_data[RES_MEM].d_conf = SDRAM_DGENERIC;
+ else
+ cplb_data[RES_MEM].d_conf = SDRAM_DNON_CHBL;
+
+ if (reserved_mem_icache_on)
+ cplb_data[RES_MEM].i_conf = SDRAM_IGENERIC;
+ else
+ cplb_data[RES_MEM].i_conf = SDRAM_INON_CHBL;
+
+ for (i = ZERO_P; i <= L2_MEM; i++) {
+
+ if (cplb_data[i].valid) {
+
+ as_1m = cplb_data[i].start % SIZE_1M;
+
+ /* We need to make sure all sections are properly 1M aligned
+ * However between Kernel Memory and the Kernel mtd section, depending on the
+ * rootfs size, there can be overlapping memory areas.
+ */
+
+ if (as_1m && i!=L1I_MEM && i!=L1D_MEM) {
+#ifdef CONFIG_MTD_UCLINUX
+ if (i == SDRAM_RAM_MTD) {
+ if ((cplb_data[SDRAM_KERN].end + 1) > cplb_data[SDRAM_RAM_MTD].start)
+ cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M)) + SIZE_1M;
+ else
+ cplb_data[SDRAM_RAM_MTD].start = (cplb_data[i].start & (-2*SIZE_1M));
+ } else
+#endif
+ printk(KERN_WARNING "Unaligned Start of %s at 0x%X\n",
+ cplb_data[i].name, cplb_data[i].start);
+ }
+
+ as = cplb_data[i].start % SIZE_4M;
+ ae = cplb_data[i].end % SIZE_4M;
+
+ if (as)
+ a_start = cplb_data[i].start + (SIZE_4M - (as));
+ else
+ a_start = cplb_data[i].start;
+
+ a_end = cplb_data[i].end - ae;
+
+ for (j = INITIAL_T; j <= SWITCH_T; j++) {
+
+ switch (j) {
+ case INITIAL_T:
+ if (cplb_data[i].attr & INITIAL_T) {
+ t_i = &cplb.init_i;
+ t_d = &cplb.init_d;
+ process = 1;
+ } else
+ process = 0;
+ break;
+ case SWITCH_T:
+ if (cplb_data[i].attr & SWITCH_T) {
+ t_i = &cplb.switch_i;
+ t_d = &cplb.switch_d;
+ process = 1;
+ } else
+ process = 0;
+ break;
+ default:
+ process = 0;
+ break;
+ }
+
+ if (process) {
+ if (cplb_data[i].attr & I_CPLB) {
+
+ if (cplb_data[i].psize) {
+ fill_cplbtab(t_i,
+ cplb_data[i].start,
+ cplb_data[i].end,
+ cplb_data[i].psize,
+ cplb_data[i].i_conf);
+ } else {
+ /*icplb_table */
+#if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
+ if (i == SDRAM_KERN) {
+ fill_cplbtab(t_i,
+ cplb_data[i].start,
+ cplb_data[i].end,
+ SIZE_4M,
+ cplb_data[i].i_conf);
+ } else
+#endif
+ {
+ fill_cplbtab(t_i,
+ cplb_data[i].start,
+ a_start,
+ SIZE_1M,
+ cplb_data[i].i_conf);
+ fill_cplbtab(t_i,
+ a_start,
+ a_end,
+ SIZE_4M,
+ cplb_data[i].i_conf);
+ fill_cplbtab(t_i, a_end,
+ cplb_data[i].end,
+ SIZE_1M,
+ cplb_data[i].i_conf);
+ }
+ }
+
+ }
+ if (cplb_data[i].attr & D_CPLB) {
+
+ if (cplb_data[i].psize) {
+ fill_cplbtab(t_d,
+ cplb_data[i].start,
+ cplb_data[i].end,
+ cplb_data[i].psize,
+ cplb_data[i].d_conf);
+ } else {
+/*dcplb_table*/
+ fill_cplbtab(t_d,
+ cplb_data[i].start,
+ a_start, SIZE_1M,
+ cplb_data[i].d_conf);
+ fill_cplbtab(t_d, a_start,
+ a_end, SIZE_4M,
+ cplb_data[i].d_conf);
+ fill_cplbtab(t_d, a_end,
+ cplb_data[i].end,
+ SIZE_1M,
+ cplb_data[i].d_conf);
+
+ }
+
+ }
+ }
+ }
+
+ }
+ }
+
+/* close tables */
+
+ close_cplbtab(&cplb.init_i);
+ close_cplbtab(&cplb.init_d);
+
+ cplb.init_i.tab[cplb.init_i.pos] = -1;
+ cplb.init_d.tab[cplb.init_d.pos] = -1;
+ cplb.switch_i.tab[cplb.switch_i.pos] = -1;
+ cplb.switch_d.tab[cplb.switch_d.pos] = -1;
+
+}
+
+#endif
+
+static inline u_long get_vco(void)
+{
+ u_long msel;
+ u_long vco;
+
+ msel = (bfin_read_PLL_CTL() >> 9) & 0x3F;
+ if (0 == msel)
+ msel = 64;
+
+ vco = CONFIG_CLKIN_HZ;
+ vco >>= (1 & bfin_read_PLL_CTL()); /* DF bit */
+ vco = msel * vco;
+ return vco;
+}
+
+/*Get the Core clock*/
+u_long get_cclk(void)
+{
+ u_long csel, ssel;
+ if (bfin_read_PLL_STAT() & 0x1)
+ return CONFIG_CLKIN_HZ;
+
+ ssel = bfin_read_PLL_DIV();
+ csel = ((ssel >> 4) & 0x03);
+ ssel &= 0xf;
+ if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
+ return get_vco() / ssel;
+ return get_vco() >> csel;
+}
+
+EXPORT_SYMBOL(get_cclk);
+
+/* Get the System clock */
+u_long get_sclk(void)
+{
+ u_long ssel;
+
+ if (bfin_read_PLL_STAT() & 0x1)
+ return CONFIG_CLKIN_HZ;
+
+ ssel = (bfin_read_PLL_DIV() & 0xf);
+ if (0 == ssel) {
+ printk(KERN_WARNING "Invalid System Clock\n");
+ ssel = 1;
+ }
+
+ return get_vco() / ssel;
+}
+
+EXPORT_SYMBOL(get_sclk);
+
+/*
+ * Get CPU information for use by the procfs.
+ */
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+ char *cpu, *mmu, *fpu, *name;
+ uint32_t revid;
+
+ u_long cclk = 0, sclk = 0;
+ u_int dcache_size = 0, dsup_banks = 0;
+
+ cpu = CPU;
+ mmu = "none";
+ fpu = "none";
+ revid = bfin_revid();
+ name = bfin_board_name;
+
+ cclk = get_cclk();
+ sclk = get_sclk();
+
+ seq_printf(m, "CPU:\t\tADSP-%s Rev. 0.%d\n"
+ "MMU:\t\t%s\n"
+ "FPU:\t\t%s\n"
+ "Core Clock:\t%9lu Hz\n"
+ "System Clock:\t%9lu Hz\n"
+ "BogoMips:\t%lu.%02lu\n"
+ "Calibration:\t%lu loops\n",
+ cpu, revid, mmu, fpu,
+ cclk,
+ sclk,
+ (loops_per_jiffy * HZ) / 500000,
+ ((loops_per_jiffy * HZ) / 5000) % 100,
+ (loops_per_jiffy * HZ));
+ seq_printf(m, "Board Name:\t%s\n", name);
+ seq_printf(m, "Board Memory:\t%ld MB\n", physical_mem_end >> 20);
+ seq_printf(m, "Kernel Memory:\t%ld MB\n", (unsigned long)_ramend >> 20);
+ if (bfin_read_IMEM_CONTROL() & (ENICPLB | IMC))
+ seq_printf(m, "I-CACHE:\tON\n");
+ else
+ seq_printf(m, "I-CACHE:\tOFF\n");
+ if ((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE))
+ seq_printf(m, "D-CACHE:\tON"
+#if defined CONFIG_BLKFIN_WB
+ " (write-back)"
+#elif defined CONFIG_BLKFIN_WT
+ " (write-through)"
+#endif
+ "\n");
+ else
+ seq_printf(m, "D-CACHE:\tOFF\n");
+
+
+ switch(bfin_read_DMEM_CONTROL() & (1 << DMC0_P | 1 << DMC1_P)) {
+ case ACACHE_BSRAM:
+ seq_printf(m, "DBANK-A:\tCACHE\n" "DBANK-B:\tSRAM\n");
+ dcache_size = 16;
+ dsup_banks = 1;
+ break;
+ case ACACHE_BCACHE:
+ seq_printf(m, "DBANK-A:\tCACHE\n" "DBANK-B:\tCACHE\n");
+ dcache_size = 32;
+ dsup_banks = 2;
+ break;
+ case ASRAM_BSRAM:
+ seq_printf(m, "DBANK-A:\tSRAM\n" "DBANK-B:\tSRAM\n");
+ dcache_size = 0;
+ dsup_banks = 0;
+ break;
+ default:
+ break;
+ }
+
+
+ seq_printf(m, "I-CACHE Size:\t%dKB\n", BLKFIN_ICACHESIZE / 1024);
+ seq_printf(m, "D-CACHE Size:\t%dKB\n", dcache_size);
+ seq_printf(m, "I-CACHE Setup:\t%d Sub-banks/%d Ways, %d Lines/Way\n",
+ BLKFIN_ISUBBANKS, BLKFIN_IWAYS, BLKFIN_ILINES);
+ seq_printf(m,
+ "D-CACHE Setup:\t%d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
+ dsup_banks, BLKFIN_DSUBBANKS, BLKFIN_DWAYS,
+ BLKFIN_DLINES);
+#ifdef CONFIG_BLKFIN_CACHE_LOCK
+ switch (read_iloc()) {
+ case WAY0_L:
+ seq_printf(m, "Way0 Locked-Down\n");
+ break;
+ case WAY1_L:
+ seq_printf(m, "Way1 Locked-Down\n");
+ break;
+ case WAY01_L:
+ seq_printf(m, "Way0,Way1 Locked-Down\n");
+ break;
+ case WAY2_L:
+ seq_printf(m, "Way2 Locked-Down\n");
+ break;
+ case WAY02_L:
+ seq_printf(m, "Way0,Way2 Locked-Down\n");
+ break;
+ case WAY12_L:
+ seq_printf(m, "Way1,Way2 Locked-Down\n");
+ break;
+ case WAY012_L:
+ seq_printf(m, "Way0,Way1 & Way2 Locked-Down\n");
+ break;
+ case WAY3_L:
+ seq_printf(m, "Way3 Locked-Down\n");
+ break;
+ case WAY03_L:
+ seq_printf(m, "Way0,Way3 Locked-Down\n");
+ break;
+ case WAY13_L:
+ seq_printf(m, "Way1,Way3 Locked-Down\n");
+ break;
+ case WAY013_L:
+ seq_printf(m, "Way 0,Way1,Way3 Locked-Down\n");
+ break;
+ case WAY32_L:
+ seq_printf(m, "Way3,Way2 Locked-Down\n");
+ break;
+ case WAY320_L:
+ seq_printf(m, "Way3,Way2,Way0 Locked-Down\n");
+ break;
+ case WAY321_L:
+ seq_printf(m, "Way3,Way2,Way1 Locked-Down\n");
+ break;
+ case WAYALL_L:
+ seq_printf(m, "All Ways are locked\n");
+ break;
+ default:
+ seq_printf(m, "No Ways are locked\n");
+ }
+#endif
+ return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+ return *pos < NR_CPUS ? ((void *)0x12345678) : 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)
+{
+}
+
+struct seq_operations cpuinfo_op = {
+ .start = c_start,
+ .next = c_next,
+ .stop = c_stop,
+ .show = show_cpuinfo,
+};
+
+void cmdline_init(unsigned long r0)
+{
+ if (r0)
+ strncpy(command_line, (char *)r0, COMMAND_LINE_SIZE);
+}
generated by cgit v1.1 at 2024-12-27 09:54:56 +0000