#include <linux/tty.h>
#include <linux/pfn.h>
+#ifdef CONFIG_MTD_UCLINUX
+#include <linux/mtd/map.h>
#include <linux/ext2_fs.h>
#include <linux/cramfs_fs.h>
#include <linux/romfs_fs.h>
+#endif
#include <asm/cplb.h>
#include <asm/cacheflush.h>
EXPORT_SYMBOL(reserved_mem_dcache_on);
#ifdef CONFIG_MTD_UCLINUX
+extern struct map_info uclinux_ram_map;
unsigned long memory_mtd_end, memory_mtd_start, mtd_size;
unsigned long _ebss;
EXPORT_SYMBOL(memory_mtd_end);
unsigned long l1_data_b_length;
unsigned long l2_length;
+ /*
+ * due to the ALIGN(4) in the arch/blackfin/kernel/vmlinux.lds.S
+ * we know that everything about l1 text/data is nice and aligned,
+ * so copy by 4 byte chunks, and don't worry about overlapping
+ * src/dest.
+ *
+ * We can't use the dma_memcpy functions, since they can call
+ * scheduler functions which might be in L1 :( and core writes
+ * into L1 instruction cause bad access errors, so we are stuck,
+ * we are required to use DMA, but can't use the common dma
+ * functions. We can't use memcpy either - since that might be
+ * going to be in the relocated L1
+ */
+
blackfin_dma_early_init();
+ /* if necessary, copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
l1_code_length = _etext_l1 - _stext_l1;
- if (l1_code_length > L1_CODE_LENGTH)
- panic("L1 Instruction SRAM Overflow\n");
- /* 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);
+ if (l1_code_length)
+ early_dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
+ /* if necessary, copy _sdata_l1 to _sbss_l1 to L1 data bank A SRAM */
l1_data_a_length = _sbss_l1 - _sdata_l1;
- if (l1_data_a_length > L1_DATA_A_LENGTH)
- panic("L1 Data SRAM Bank A Overflow\n");
-
- /* Copy _sdata_l1 to _sbss_l1 to L1 data bank A SRAM */
- dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
+ if (l1_data_a_length)
+ early_dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
+ /* if necessary, copy _sdata_b_l1 to _sbss_b_l1 to L1 data bank B SRAM */
l1_data_b_length = _sbss_b_l1 - _sdata_b_l1;
- if (l1_data_b_length > L1_DATA_B_LENGTH)
- panic("L1 Data SRAM Bank B Overflow\n");
-
- /* Copy _sdata_b_l1 to _sbss_b_l1 to L1 data bank B SRAM */
- dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
+ if (l1_data_b_length)
+ early_dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
l1_data_a_length, l1_data_b_length);
+ early_dma_memcpy_done();
+
+ /* if necessary, copy _stext_l2 to _edata_l2 to L2 SRAM */
if (L2_LENGTH != 0) {
l2_length = _sbss_l2 - _stext_l2;
- if (l2_length > L2_LENGTH)
- panic("L2 SRAM Overflow\n");
-
- /* Copy _stext_l2 to _edata_l2 to L2 SRAM */
- dma_memcpy(_stext_l2, _l2_lma_start, l2_length);
+ if (l2_length)
+ memcpy(_stext_l2, _l2_lma_start, l2_length);
}
}
if (DMA_UNCACHED_REGION > (_ramend - _ramstart)) {
console_init();
- panic("DMA region exceeds memory limit: %lu.\n",
+ panic("DMA region exceeds memory limit: %lu.",
_ramend - _ramstart);
}
memory_end = _ramend - DMA_UNCACHED_REGION;
if (mtd_size == 0) {
console_init();
- panic("Don't boot kernel without rootfs attached.\n");
+ panic("Don't boot kernel without rootfs attached.");
}
/* Relocate MTD image to the top of memory after the uncached memory area */
- dma_memcpy((char *)memory_end, _end, mtd_size);
-
- memory_mtd_start = memory_end;
- _ebss = memory_mtd_start; /* define _ebss for compatible */
+ uclinux_ram_map.phys = memory_mtd_start = memory_end;
+ uclinux_ram_map.size = mtd_size;
+ dma_memcpy((void *)uclinux_ram_map.phys, _end, uclinux_ram_map.size);
#endif /* CONFIG_MTD_UCLINUX */
#if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
cclk = get_cclk();
sclk = get_sclk();
-#if !defined(CONFIG_BFIN_KERNEL_CLOCK)
- if (ANOMALY_05000273 && cclk == sclk)
- panic("ANOMALY 05000273, SCLK can not be same as CCLK");
-#endif
+ if ((ANOMALY_05000273 || ANOMALY_05000274) && (cclk >> 1) < sclk)
+ panic("ANOMALY 05000273 or 05000274: CCLK must be >= 2*SCLK");
#ifdef BF561_FAMILY
if (ANOMALY_05000266) {
printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
bfin_compiled_revid(), bfin_revid());
if (bfin_compiled_revid() > bfin_revid())
- panic("Error: you are missing anomaly workarounds for this rev\n");
+ panic("Error: you are missing anomaly workarounds for this rev");
}
}
if (bfin_revid() < CONFIG_BF_REV_MIN || bfin_revid() > CONFIG_BF_REV_MAX)
/* We can't run on BF548-0.1 due to ANOMALY 05000448 */
if (bfin_cpuid() == 0x27de && bfin_revid() == 1)
- panic("You can't run on this processor due to 05000448\n");
+ panic("You can't run on this processor due to 05000448");
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 (ANOMALY_05000273 && (cclk >> 1) <= sclk)
- printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n");
-
setup_bootmem_allocator();
paging_init();
CPUID, bfin_cpuid());
seq_printf(m, "model name\t: ADSP-%s %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n"
- "stepping\t: %d\n",
+ "stepping\t: %d ",
cpu, cclk/1000000, sclk/1000000,
#ifdef CONFIG_MPU
"mpu on",
#endif
revid);
- seq_printf(m, "cpu MHz\t\t: %lu.%03lu/%lu.%03lu\n",
+ if (bfin_revid() != bfin_compiled_revid()) {
+ if (bfin_compiled_revid() == -1)
+ seq_printf(m, "(Compiled for Rev none)");
+ else if (bfin_compiled_revid() == 0xffff)
+ seq_printf(m, "(Compiled for Rev any)");
+ else
+ seq_printf(m, "(Compiled for Rev %d)", bfin_compiled_revid());
+ }
+
+ seq_printf(m, "\ncpu MHz\t\t: %lu.%03lu/%lu.%03lu\n",
cclk/1000000, cclk%1000000,
sclk/1000000, sclk%1000000);
seq_printf(m, "bogomips\t: %lu.%02lu\n"
#ifdef __ARCH_SYNC_CORE_DCACHE
seq_printf(m, "SMP Dcache Flushes\t: %lu\n\n", cpudata->dcache_invld_count);
#endif
+#ifdef __ARCH_SYNC_CORE_ICACHE
+ seq_printf(m, "SMP Icache Flushes\t: %lu\n\n", cpudata->icache_invld_count);
+#endif
#ifdef CONFIG_BFIN_ICACHE_LOCK
switch ((cpudata->imemctl >> 3) & WAYALL_L) {
case WAY0_L:
git.openpandora.org / pandora-kernel.git / blobdiff