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-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c29
-rw-r--r--arch/blackfin/kernel/bfin_gpio.c6
-rw-r--r--arch/blackfin/kernel/cplb-nompu/cplbinit.c23
-rw-r--r--arch/blackfin/kernel/process.c14
-rw-r--r--arch/blackfin/kernel/setup.c44
-rw-r--r--arch/blackfin/kernel/traps.c9
6 files changed, 65 insertions, 60 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index e0bf8cc..9f9b828 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -253,32 +253,31 @@ void __init early_dma_memcpy(void *pdst, const void *psrc, size_t size)
BUG_ON(src % 4);
BUG_ON(size % 4);
- /* Force a sync in case a previous config reset on this channel
- * occurred. This is needed so subsequent writes to DMA registers
- * are not spuriously lost/corrupted.
- */
- __builtin_bfin_ssync();
-
src_ch = 0;
/* Find an avalible memDMA channel */
while (1) {
- if (!src_ch || src_ch == (struct dma_register *)MDMA_S1_NEXT_DESC_PTR) {
- dst_ch = (struct dma_register *)MDMA_D0_NEXT_DESC_PTR;
- src_ch = (struct dma_register *)MDMA_S0_NEXT_DESC_PTR;
- } else {
+ if (src_ch == (struct dma_register *)MDMA_S0_NEXT_DESC_PTR) {
dst_ch = (struct dma_register *)MDMA_D1_NEXT_DESC_PTR;
src_ch = (struct dma_register *)MDMA_S1_NEXT_DESC_PTR;
+ } else {
+ dst_ch = (struct dma_register *)MDMA_D0_NEXT_DESC_PTR;
+ src_ch = (struct dma_register *)MDMA_S0_NEXT_DESC_PTR;
}
- if (!bfin_read16(&src_ch->cfg)) {
+ if (!bfin_read16(&src_ch->cfg))
+ break;
+ else if (bfin_read16(&dst_ch->irq_status) & DMA_DONE) {
+ bfin_write16(&src_ch->cfg, 0);
break;
- } else {
- if (bfin_read16(&src_ch->irq_status) & DMA_DONE)
- bfin_write16(&src_ch->cfg, 0);
}
-
}
+ /* Force a sync in case a previous config reset on this channel
+ * occurred. This is needed so subsequent writes to DMA registers
+ * are not spuriously lost/corrupted.
+ */
+ __builtin_bfin_ssync();
+
/* Destination */
bfin_write32(&dst_ch->start_addr, dst);
bfin_write16(&dst_ch->x_count, size >> 2);
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index beffa00..6b94462 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -686,14 +686,12 @@ void bfin_gpio_pm_hibernate_restore(void)
*port_fer[bank] = gpio_bank_saved[bank].fer;
#endif
gpio_array[bank]->inen = gpio_bank_saved[bank].inen;
+ gpio_array[bank]->data_set = gpio_bank_saved[bank].data
+ & gpio_bank_saved[bank].dir;
gpio_array[bank]->dir = gpio_bank_saved[bank].dir;
gpio_array[bank]->polar = gpio_bank_saved[bank].polar;
gpio_array[bank]->edge = gpio_bank_saved[bank].edge;
gpio_array[bank]->both = gpio_bank_saved[bank].both;
-
- gpio_array[bank]->data_set = gpio_bank_saved[bank].data
- | gpio_bank_saved[bank].dir;
-
gpio_array[bank]->maska = gpio_bank_saved[bank].maska;
}
AWA_DUMMY_READ(maska);
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbinit.c b/arch/blackfin/kernel/cplb-nompu/cplbinit.c
index d6c0677..685f160 100644
--- a/arch/blackfin/kernel/cplb-nompu/cplbinit.c
+++ b/arch/blackfin/kernel/cplb-nompu/cplbinit.c
@@ -72,13 +72,24 @@ void __init generate_cplb_tables_cpu(unsigned int cpu)
}
/* Cover L1 memory. One 4M area for code and data each is enough. */
- if (L1_DATA_A_LENGTH || L1_DATA_B_LENGTH) {
- d_tbl[i_d].addr = L1_DATA_A_START;
- d_tbl[i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
+ if (cpu == 0) {
+ if (L1_DATA_A_LENGTH || L1_DATA_B_LENGTH) {
+ d_tbl[i_d].addr = L1_DATA_A_START;
+ d_tbl[i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
+ }
+ i_tbl[i_i].addr = L1_CODE_START;
+ i_tbl[i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
}
- i_tbl[i_i].addr = L1_CODE_START;
- i_tbl[i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
-
+#ifdef CONFIG_SMP
+ else {
+ if (L1_DATA_A_LENGTH || L1_DATA_B_LENGTH) {
+ d_tbl[i_d].addr = COREB_L1_DATA_A_START;
+ d_tbl[i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
+ }
+ i_tbl[i_i].addr = COREB_L1_CODE_START;
+ i_tbl[i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
+ }
+#endif
first_switched_dcplb = i_d;
first_switched_icplb = i_i;
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 79cad0a..9da36ba 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -361,7 +361,7 @@ static inline
int in_mem_const(unsigned long addr, unsigned long size,
unsigned long const_addr, unsigned long const_size)
{
- return in_mem_const_off(addr, 0, size, const_addr, const_size);
+ return in_mem_const_off(addr, size, 0, const_addr, const_size);
}
#define IN_ASYNC(bnum, bctlnum) \
({ \
@@ -390,13 +390,13 @@ int bfin_mem_access_type(unsigned long addr, unsigned long size)
if (in_mem_const(addr, size, L1_DATA_B_START, L1_DATA_B_LENGTH))
return cpu == 0 ? BFIN_MEM_ACCESS_CORE : BFIN_MEM_ACCESS_IDMA;
#ifdef COREB_L1_CODE_START
- if (in_mem_const(addr, size, COREB_L1_CODE_START, L1_CODE_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_CODE_START, COREB_L1_CODE_LENGTH))
return cpu == 1 ? BFIN_MEM_ACCESS_ITEST : BFIN_MEM_ACCESS_IDMA;
if (in_mem_const(addr, size, COREB_L1_SCRATCH_START, L1_SCRATCH_LENGTH))
return cpu == 1 ? BFIN_MEM_ACCESS_CORE_ONLY : -EFAULT;
- if (in_mem_const(addr, size, COREB_L1_DATA_A_START, L1_DATA_A_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_DATA_A_START, COREB_L1_DATA_A_LENGTH))
return cpu == 1 ? BFIN_MEM_ACCESS_CORE : BFIN_MEM_ACCESS_IDMA;
- if (in_mem_const(addr, size, COREB_L1_DATA_B_START, L1_DATA_B_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_DATA_B_START, COREB_L1_DATA_B_LENGTH))
return cpu == 1 ? BFIN_MEM_ACCESS_CORE : BFIN_MEM_ACCESS_IDMA;
#endif
if (in_mem_const(addr, size, L2_START, L2_LENGTH))
@@ -472,13 +472,13 @@ int _access_ok(unsigned long addr, unsigned long size)
if (in_mem_const_off(addr, size, _ebss_b_l1 - _sdata_b_l1, L1_DATA_B_START, L1_DATA_B_LENGTH))
return 1;
#ifdef COREB_L1_CODE_START
- if (in_mem_const(addr, size, COREB_L1_CODE_START, L1_CODE_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_CODE_START, COREB_L1_CODE_LENGTH))
return 1;
if (in_mem_const(addr, size, COREB_L1_SCRATCH_START, L1_SCRATCH_LENGTH))
return 1;
- if (in_mem_const(addr, size, COREB_L1_DATA_A_START, L1_DATA_A_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_DATA_A_START, COREB_L1_DATA_A_LENGTH))
return 1;
- if (in_mem_const(addr, size, COREB_L1_DATA_B_START, L1_DATA_B_LENGTH))
+ if (in_mem_const(addr, size, COREB_L1_DATA_B_START, COREB_L1_DATA_B_LENGTH))
return 1;
#endif
if (in_mem_const_off(addr, size, _ebss_l2 - _stext_l2, L2_START, L2_LENGTH))
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 6136c33..6225eda 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -168,7 +168,6 @@ void __cpuinit bfin_setup_cpudata(unsigned int cpu)
struct blackfin_cpudata *cpudata = &per_cpu(cpu_data, cpu);
cpudata->idle = current;
- cpudata->loops_per_jiffy = loops_per_jiffy;
cpudata->imemctl = bfin_read_IMEM_CONTROL();
cpudata->dmemctl = bfin_read_DMEM_CONTROL();
}
@@ -568,17 +567,23 @@ static __init void memory_setup(void)
# 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.");
+ /* Since the default MTD_UCLINUX has no magic number, we just blindly
+ * read 8 past the end of the kernel's image, and look at it.
+ * When no image is attached, mtd_size is set to a random number
+ * Do some basic sanity checks before operating on things
+ */
+ if (mtd_size == 0 || memory_end <= mtd_size) {
+ pr_emerg("Could not find valid ram mtd attached.\n");
+ } else {
+ memory_end -= mtd_size;
+
+ /* Relocate MTD image to the top of memory after the uncached memory area */
+ uclinux_ram_map.phys = memory_mtd_start = memory_end;
+ uclinux_ram_map.size = mtd_size;
+ pr_info("Found mtd parition at 0x%p, (len=0x%lx), moving to 0x%p\n",
+ _end, mtd_size, (void *)memory_mtd_start);
+ dma_memcpy((void *)uclinux_ram_map.phys, _end, uclinux_ram_map.size);
}
-
- /* Relocate MTD image to the top of memory after the uncached memory area */
- 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_EXTMEM_ICACHEABLE) && ANOMALY_05000263)
@@ -868,13 +873,6 @@ void __init setup_arch(char **cmdline_p)
else
printk(KERN_CONT "and Disabled\n");
-#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
-
printk(KERN_INFO "Boot Mode: %i\n", bfin_read_SYSCR() & 0xF);
/* Newer parts mirror SWRST bits in SYSCR */
@@ -938,10 +936,6 @@ void __init setup_arch(char **cmdline_p)
CPU, bfin_revid());
}
- /* 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");
-
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",
@@ -1164,9 +1158,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
sclk/1000000, sclk%1000000);
seq_printf(m, "bogomips\t: %lu.%02lu\n"
"Calibration\t: %lu loops\n",
- (cpudata->loops_per_jiffy * HZ) / 500000,
- ((cpudata->loops_per_jiffy * HZ) / 5000) % 100,
- (cpudata->loops_per_jiffy * HZ));
+ (loops_per_jiffy * HZ) / 500000,
+ ((loops_per_jiffy * HZ) / 5000) % 100,
+ (loops_per_jiffy * HZ));
/* Check Cache configutation */
switch (cpudata->dmemctl & (1 << DMC0_P | 1 << DMC1_P)) {
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 8a1caf2..bf2b2d1 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -570,11 +570,12 @@ asmlinkage void trap_c(struct pt_regs *fp)
if (kernel_mode_regs(fp) || (current && !current->mm)) {
console_verbose();
oops_in_progress = 1;
- if (strerror)
- verbose_printk(strerror);
}
if (sig != SIGTRAP) {
+ if (strerror)
+ verbose_printk(strerror);
+
dump_bfin_process(fp);
dump_bfin_mem(fp);
show_regs(fp);
@@ -619,7 +620,9 @@ asmlinkage void trap_c(struct pt_regs *fp)
force_sig_info(sig, &info, current);
}
- if (ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8))
+ if ((ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) ||
+ (ANOMALY_05000281 && trapnr == VEC_HWERR) ||
+ (ANOMALY_05000189 && (trapnr == VEC_CPLB_I_VL || trapnr == VEC_CPLB_VL)))
fp->pc = SAFE_USER_INSTRUCTION;
traps_done:
generated by cgit v1.1 at 2024-07-06 11:40:38 +0000