diff options
Diffstat (limited to 'arch/mips/cavium-octeon/setup.c')
| -rw-r--r-- | arch/mips/cavium-octeon/setup.c | 120 |
1 files changed, 86 insertions, 34 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 69197cb6c7ea..b0c3686c96dd 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -33,6 +33,7 @@ #include <asm/octeon/octeon.h> #include <asm/octeon/pci-octeon.h> +#include <asm/octeon/cvmx-mio-defs.h> #ifdef CONFIG_CAVIUM_DECODE_RSL extern void cvmx_interrupt_rsl_decode(void); @@ -96,12 +97,21 @@ int octeon_is_pci_host(void) */ uint64_t octeon_get_clock_rate(void) { - if (octeon_is_simulation()) - octeon_bootinfo->eclock_hz = 6000000; - return octeon_bootinfo->eclock_hz; + struct cvmx_sysinfo *sysinfo = cvmx_sysinfo_get(); + + return sysinfo->cpu_clock_hz; } EXPORT_SYMBOL(octeon_get_clock_rate); +static u64 octeon_io_clock_rate; + +u64 octeon_get_io_clock_rate(void) +{ + return octeon_io_clock_rate; +} +EXPORT_SYMBOL(octeon_get_io_clock_rate); + + /** * Write to the LCD display connected to the bootbus. This display * exists on most Cavium evaluation boards. If it doesn't exist, then @@ -346,8 +356,18 @@ void octeon_user_io_init(void) cvmmemctl.s.wbfltime = 0; /* R/W If set, do not put Istream in the L2 cache. */ cvmmemctl.s.istrnol2 = 0; - /* R/W The write buffer threshold. */ - cvmmemctl.s.wbthresh = 10; + + /* + * R/W The write buffer threshold. As per erratum Core-14752 + * for CN63XX, a sc/scd might fail if the write buffer is + * full. Lowering WBTHRESH greatly lowers the chances of the + * write buffer ever being full and triggering the erratum. + */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X)) + cvmmemctl.s.wbthresh = 4; + else + cvmmemctl.s.wbthresh = 10; + /* R/W If set, CVMSEG is available for loads/stores in * kernel/debug mode. */ #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0 @@ -365,14 +385,13 @@ void octeon_user_io_init(void) * is max legal value. */ cvmmemctl.s.lmemsz = CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE; + write_c0_cvmmemctl(cvmmemctl.u64); if (smp_processor_id() == 0) pr_notice("CVMSEG size: %d cache lines (%d bytes)\n", CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE * 128); - write_c0_cvmmemctl(cvmmemctl.u64); - /* Move the performance counter interrupts to IRQ 6 */ cvmctl = read_c0_cvmctl(); cvmctl &= ~(7 << 7); @@ -416,6 +435,41 @@ void __init prom_init(void) cvmx_phys_to_ptr(octeon_boot_desc_ptr->cvmx_desc_vaddr); cvmx_bootmem_init(cvmx_phys_to_ptr(octeon_bootinfo->phy_mem_desc_addr)); + sysinfo = cvmx_sysinfo_get(); + memset(sysinfo, 0, sizeof(*sysinfo)); + sysinfo->system_dram_size = octeon_bootinfo->dram_size << 20; + sysinfo->phy_mem_desc_ptr = + cvmx_phys_to_ptr(octeon_bootinfo->phy_mem_desc_addr); + sysinfo->core_mask = octeon_bootinfo->core_mask; + sysinfo->exception_base_addr = octeon_bootinfo->exception_base_addr; + sysinfo->cpu_clock_hz = octeon_bootinfo->eclock_hz; + sysinfo->dram_data_rate_hz = octeon_bootinfo->dclock_hz * 2; + sysinfo->board_type = octeon_bootinfo->board_type; + sysinfo->board_rev_major = octeon_bootinfo->board_rev_major; + sysinfo->board_rev_minor = octeon_bootinfo->board_rev_minor; + memcpy(sysinfo->mac_addr_base, octeon_bootinfo->mac_addr_base, + sizeof(sysinfo->mac_addr_base)); + sysinfo->mac_addr_count = octeon_bootinfo->mac_addr_count; + memcpy(sysinfo->board_serial_number, + octeon_bootinfo->board_serial_number, + sizeof(sysinfo->board_serial_number)); + sysinfo->compact_flash_common_base_addr = + octeon_bootinfo->compact_flash_common_base_addr; + sysinfo->compact_flash_attribute_base_addr = + octeon_bootinfo->compact_flash_attribute_base_addr; + sysinfo->led_display_base_addr = octeon_bootinfo->led_display_base_addr; + sysinfo->dfa_ref_clock_hz = octeon_bootinfo->dfa_ref_clock_hz; + sysinfo->bootloader_config_flags = octeon_bootinfo->config_flags; + + if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) { + /* I/O clock runs at a different rate than the CPU. */ + union cvmx_mio_rst_boot rst_boot; + rst_boot.u64 = cvmx_read_csr(CVMX_MIO_RST_BOOT); + octeon_io_clock_rate = 50000000 * rst_boot.s.pnr_mul; + } else { + octeon_io_clock_rate = sysinfo->cpu_clock_hz; + } + /* * Only enable the LED controller if we're running on a CN38XX, CN58XX, * or CN56XX. The CN30XX and CN31XX don't have an LED controller. @@ -479,33 +533,6 @@ void __init prom_init(void) } #endif - sysinfo = cvmx_sysinfo_get(); - memset(sysinfo, 0, sizeof(*sysinfo)); - sysinfo->system_dram_size = octeon_bootinfo->dram_size << 20; - sysinfo->phy_mem_desc_ptr = - cvmx_phys_to_ptr(octeon_bootinfo->phy_mem_desc_addr); - sysinfo->core_mask = octeon_bootinfo->core_mask; - sysinfo->exception_base_addr = octeon_bootinfo->exception_base_addr; - sysinfo->cpu_clock_hz = octeon_bootinfo->eclock_hz; - sysinfo->dram_data_rate_hz = octeon_bootinfo->dclock_hz * 2; - sysinfo->board_type = octeon_bootinfo->board_type; - sysinfo->board_rev_major = octeon_bootinfo->board_rev_major; - sysinfo->board_rev_minor = octeon_bootinfo->board_rev_minor; - memcpy(sysinfo->mac_addr_base, octeon_bootinfo->mac_addr_base, - sizeof(sysinfo->mac_addr_base)); - sysinfo->mac_addr_count = octeon_bootinfo->mac_addr_count; - memcpy(sysinfo->board_serial_number, - octeon_bootinfo->board_serial_number, - sizeof(sysinfo->board_serial_number)); - sysinfo->compact_flash_common_base_addr = - octeon_bootinfo->compact_flash_common_base_addr; - sysinfo->compact_flash_attribute_base_addr = - octeon_bootinfo->compact_flash_attribute_base_addr; - sysinfo->led_display_base_addr = octeon_bootinfo->led_display_base_addr; - sysinfo->dfa_ref_clock_hz = octeon_bootinfo->dfa_ref_clock_hz; - sysinfo->bootloader_config_flags = octeon_bootinfo->config_flags; - - octeon_check_cpu_bist(); octeon_uart = octeon_get_boot_uart(); @@ -740,6 +767,31 @@ EXPORT_SYMBOL(prom_putchar); void prom_free_prom_memory(void) { + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X)) { + /* Check for presence of Core-14449 fix. */ + u32 insn; + u32 *foo; + + foo = &insn; + + asm volatile("# before" : : : "memory"); + prefetch(foo); + asm volatile( + ".set push\n\t" + ".set noreorder\n\t" + "bal 1f\n\t" + "nop\n" + "1:\tlw %0,-12($31)\n\t" + ".set pop\n\t" + : "=r" (insn) : : "$31", "memory"); + + if ((insn >> 26) != 0x33) + panic("No PREF instruction at Core-14449 probe point.\n"); + + if (((insn >> 16) & 0x1f) != 28) + panic("Core-14449 WAR not in place (%04x).\n" + "Please build kernel with proper options (CONFIG_CAVIUM_CN63XXP1).\n", insn); + } #ifdef CONFIG_CAVIUM_DECODE_RSL cvmx_interrupt_rsl_enable(); |