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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-spinlock.h"
#include <octeon-app-init.h>
#include "cvmx-sysinfo.h"
#include "cvmx-bootmem.h"
#include "cvmx-uart.h"
#include "cvmx-coremask.h"
#include "cvmx-core.h"
#include "cvmx-interrupt.h"
#include "cvmx-ebt3000.h"
#include "cvmx-sim-magic.h"
#include "cvmx-debug.h"
#include "../../bootloader/u-boot/include/octeon_mem_map.h"
int cvmx_debug_uart = -1;
/**
* @file
*
* Main entry point for all simple executive based programs.
*/
extern void cvmx_interrupt_initialize(void);
/**
* Main entry point for all simple executive based programs.
* This is the first C function called. It completes
* initialization, calls main, and performs C level cleanup.
*
* @param app_desc_addr
* Address of the application description structure passed
* brom the boot loader.
*/
EXTERN_ASM void __cvmx_app_init(uint64_t app_desc_addr);
/**
* Set up sysinfo structure from boot descriptor versions 6 and higher.
* In these versions, the interesting data in not in the boot info structure
* defined by the toolchain, but is in the cvmx_bootinfo structure defined in
* the simple exec.
*
* @param app_desc_ptr
* pointer to boot descriptor block
*
* @param sys_info_ptr
* pointer to sysinfo structure to fill in
*/
static void process_boot_desc_ver_6(octeon_boot_descriptor_t *app_desc_ptr, cvmx_sysinfo_t *sys_info_ptr)
{
cvmx_bootinfo_t *cvmx_bootinfo_ptr = CASTPTR(cvmx_bootinfo_t, app_desc_ptr->cvmx_desc_vaddr);
/* copy application information for simple exec use */
/* Populate the sys_info structure from the boot descriptor block created by the bootloader.
** The boot descriptor block is put in the top of the heap, so it will be overwritten when the
** heap is fully used. Information that is to be used must be copied before that.
** Applications should only use the sys_info structure, not the boot descriptor
*/
if (cvmx_bootinfo_ptr->major_version == 1)
{
sys_info_ptr->core_mask = cvmx_bootinfo_ptr->core_mask;
sys_info_ptr->heap_base = cvmx_bootinfo_ptr->heap_base;
sys_info_ptr->heap_size = cvmx_bootinfo_ptr->heap_end - cvmx_bootinfo_ptr->heap_base;
sys_info_ptr->stack_top = cvmx_bootinfo_ptr->stack_top;
sys_info_ptr->stack_size = cvmx_bootinfo_ptr->stack_size;
sys_info_ptr->init_core = cvmx_get_core_num();
sys_info_ptr->phy_mem_desc_addr = cvmx_bootinfo_ptr->phy_mem_desc_addr;
sys_info_ptr->exception_base_addr = cvmx_bootinfo_ptr->exception_base_addr;
sys_info_ptr->cpu_clock_hz = cvmx_bootinfo_ptr->eclock_hz;
sys_info_ptr->dram_data_rate_hz = cvmx_bootinfo_ptr->dclock_hz * 2;
sys_info_ptr->board_type = cvmx_bootinfo_ptr->board_type;
sys_info_ptr->board_rev_major = cvmx_bootinfo_ptr->board_rev_major;
sys_info_ptr->board_rev_minor = cvmx_bootinfo_ptr->board_rev_minor;
memcpy(sys_info_ptr->mac_addr_base, cvmx_bootinfo_ptr->mac_addr_base, 6);
sys_info_ptr->mac_addr_count = cvmx_bootinfo_ptr->mac_addr_count;
memcpy(sys_info_ptr->board_serial_number, cvmx_bootinfo_ptr->board_serial_number, CVMX_BOOTINFO_OCTEON_SERIAL_LEN);
sys_info_ptr->console_uart_num = 0;
if (cvmx_bootinfo_ptr->flags & OCTEON_BL_FLAG_CONSOLE_UART1)
sys_info_ptr->console_uart_num = 1;
if (cvmx_bootinfo_ptr->dram_size > 32*1024*1024)
sys_info_ptr->system_dram_size = (uint64_t)cvmx_bootinfo_ptr->dram_size; /* older bootloaders incorrectly gave this in bytes, so don't convert */
else
sys_info_ptr->system_dram_size = (uint64_t)cvmx_bootinfo_ptr->dram_size * 1024 * 1024; /* convert from Megabytes to bytes */
if (cvmx_bootinfo_ptr->minor_version >= 1)
{
sys_info_ptr->compact_flash_common_base_addr = cvmx_bootinfo_ptr->compact_flash_common_base_addr;
sys_info_ptr->compact_flash_attribute_base_addr = cvmx_bootinfo_ptr->compact_flash_attribute_base_addr;
sys_info_ptr->led_display_base_addr = cvmx_bootinfo_ptr->led_display_base_addr;
}
else if (sys_info_ptr->board_type == CVMX_BOARD_TYPE_EBT3000 ||
sys_info_ptr->board_type == CVMX_BOARD_TYPE_EBT5800 ||
sys_info_ptr->board_type == CVMX_BOARD_TYPE_EBT5810)
{
/* Default these variables so that users of structure can be the same no
** matter what version fo boot info block the bootloader passes */
sys_info_ptr->compact_flash_common_base_addr = 0x1d000000 + 0x800;
sys_info_ptr->compact_flash_attribute_base_addr = 0x1d010000;
if (sys_info_ptr->board_rev_major == 1)
sys_info_ptr->led_display_base_addr = 0x1d020000;
else
sys_info_ptr->led_display_base_addr = 0x1d020000 + 0xf8;
}
else
{
sys_info_ptr->compact_flash_common_base_addr = 0;
sys_info_ptr->compact_flash_attribute_base_addr = 0;
sys_info_ptr->led_display_base_addr = 0;
}
if (cvmx_bootinfo_ptr->minor_version >= 2)
{
sys_info_ptr->dfa_ref_clock_hz = cvmx_bootinfo_ptr->dfa_ref_clock_hz;
sys_info_ptr->bootloader_config_flags = cvmx_bootinfo_ptr->config_flags;
}
else
{
sys_info_ptr->dfa_ref_clock_hz = 0;
sys_info_ptr->bootloader_config_flags = 0;
if (app_desc_ptr->flags & OCTEON_BL_FLAG_DEBUG)
sys_info_ptr->bootloader_config_flags |= CVMX_BOOTINFO_CFG_FLAG_DEBUG;
if (app_desc_ptr->flags & OCTEON_BL_FLAG_NO_MAGIC)
sys_info_ptr->bootloader_config_flags |= CVMX_BOOTINFO_CFG_FLAG_NO_MAGIC;
}
}
else
{
printf("ERROR: Incompatible CVMX descriptor passed by bootloader: %d.%d\n",
(int)cvmx_bootinfo_ptr->major_version, (int)cvmx_bootinfo_ptr->minor_version);
exit(-1);
}
}
/**
* Interrupt handler for calling exit on Control-C interrupts.
*
* @param irq_number IRQ interrupt number
* @param registers CPU registers at the time of the interrupt
* @param user_arg Unused user argument
*/
static void process_break_interrupt(int irq_number, uint64_t registers[32], void *user_arg)
{
/* Exclude new functionality when building with older toolchains */
#if OCTEON_APP_INIT_H_VERSION >= 3
int uart = irq_number - CVMX_IRQ_UART0;
cvmx_uart_lsr_t lsrval;
/* Check for a Control-C interrupt from the console. This loop will eat
all input received on the uart */
lsrval.u64 = cvmx_read_csr(CVMX_MIO_UARTX_LSR(uart));
while (lsrval.s.dr)
{
int c = cvmx_read_csr(CVMX_MIO_UARTX_RBR(uart));
if (c == '\003')
{
register uint64_t tmp;
/* Wait for an another Control-C if right now we have no
access to the console. After this point we hold the
lock and use a different lock to synchronize between
the memfile dumps from different cores. As a
consequence regular printfs *don't* work after this
point! */
if (__octeon_uart_trylock () == 1)
return;
/* Pulse MCD0 signal on Ctrl-C to stop all the cores. Also
set the MCD0 to be not masked by this core so we know
the signal is received by someone */
asm volatile (
"dmfc0 %0, $22\n"
"ori %0, %0, 0x1110\n"
"dmtc0 %0, $22\n"
: "=r" (tmp));
}
lsrval.u64 = cvmx_read_csr(CVMX_MIO_UARTX_LSR(uart));
}
#endif
}
/**
* This is the debug exception handler with "break". Before calling exit to
* dump the profile-feedback output it releases the lock on the console.
* This way if there is buffered data in stdout it can still be flushed.
* stdio is required to flush all output during an fread.
*/
static void exit_on_break(void)
{
#if OCTEON_APP_INIT_H_VERSION >= 4
unsigned int coremask = cvmx_sysinfo_get()->core_mask;
cvmx_coremask_barrier_sync(coremask);
if (cvmx_coremask_first_core(coremask))
__octeon_uart_unlock();
#endif
exit(0);
}
/* Add string signature to applications so that we can easily tell what
** Octeon revision they were compiled for. Don't make static to avoid unused
** variable warning. */
#define xstr(s) str(s)
#define str(s) #s
int octeon_model_version_check(uint32_t chip_id);
#define OMS xstr(OCTEON_MODEL)
char octeon_rev_signature[] =
#ifdef USE_RUNTIME_MODEL_CHECKS
"Compiled for runtime Octeon model checking";
#else
"Compiled for Octeon processor id: "OMS;
#endif
void __cvmx_app_init(uint64_t app_desc_addr)
{
/* App descriptor used by bootloader */
octeon_boot_descriptor_t *app_desc_ptr = CASTPTR(octeon_boot_descriptor_t, app_desc_addr);
/* app info structure used by the simple exec */
cvmx_sysinfo_t *sys_info_ptr = cvmx_sysinfo_get();
int breakflag = 0;
if (cvmx_coremask_first_core(app_desc_ptr->core_mask))
{
/* do once per application setup */
if (app_desc_ptr->desc_version < 6)
{
printf("Obsolete bootloader, can't run application\n");
exit(-1);
}
else
{
/* Handle all newer versions here.... */
if (app_desc_ptr->desc_version > 7)
{
printf("Warning: newer boot descripter version than expected\n");
}
process_boot_desc_ver_6(app_desc_ptr,sys_info_ptr);
}
}
cvmx_coremask_barrier_sync(app_desc_ptr->core_mask);
breakflag = sys_info_ptr->bootloader_config_flags & CVMX_BOOTINFO_CFG_FLAG_BREAK;
/* No need to initialize bootmem, interrupts, interrupt handler and error handler
if version does not match. */
if (cvmx_coremask_first_core(sys_info_ptr->core_mask))
{
/* Check to make sure the Chip version matches the configured version */
uint32_t chip_id = cvmx_get_proc_id();
/* Make sure we can properly run on this chip */
octeon_model_version_check(chip_id);
}
cvmx_interrupt_initialize();
if (cvmx_coremask_first_core(sys_info_ptr->core_mask))
{
int break_uart = 0;
unsigned int i;
/* Intialize the bootmem allocator with the descriptor that was provided by
* the bootloader
* IMPORTANT: All printfs must happen after this since PCI console uses named
* blocks.
*/
cvmx_bootmem_init(sys_info_ptr->phy_mem_desc_addr);
if (breakflag && cvmx_debug_booted())
{
printf("ERROR: Using debug and break together in not supported.\n");
while (1)
;
}
/* Search through the arguments for a break=X or a debug=X. */
for (i = 0; i < app_desc_ptr->argc; i++)
{
const char *argv = CASTPTR(const char, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, app_desc_ptr->argv[i]));
if (strncmp(argv, "break=", 6) == 0)
break_uart = atoi(argv + 6);
else if (strncmp(argv, "debug=", 6) == 0)
cvmx_debug_uart = atoi(argv + 6);
}
if (breakflag)
{
int32_t *trampoline = CASTPTR(int32_t, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, BOOTLOADER_DEBUG_TRAMPOLINE));
/* On debug exception, call exit_on_break from all cores. */
*trampoline = (int32_t)(long)&exit_on_break;
cvmx_uart_enable_intr(break_uart, process_break_interrupt);
}
}
cvmx_coremask_barrier_sync(app_desc_ptr->core_mask);
/* Clear BEV now that we have installed exception handlers. */
uint64_t tmp;
asm volatile (
" .set push \n"
" .set mips64 \n"
" .set noreorder \n"
" .set noat \n"
" mfc0 %[tmp], $12, 0 \n"
" li $at, 1 << 22 \n"
" not $at, $at \n"
" and %[tmp], $at \n"
" mtc0 %[tmp], $12, 0 \n"
" .set pop \n"
: [tmp] "=&r" (tmp) : );
/* Set all cores to stop on MCD0 signals */
asm volatile(
"dmfc0 %0, $22, 0\n"
"or %0, %0, 0x1100\n"
"dmtc0 %0, $22, 0\n" : "=r" (tmp));
CVMX_SYNC;
/* Now intialize the debug exception handler as BEV is cleared. */
if (!breakflag)
cvmx_debug_init();
/* Synchronise all cores at this point */
cvmx_coremask_barrier_sync(app_desc_ptr->core_mask);
}
int cvmx_user_app_init(void)
{
uint64_t bist_val;
uint64_t mask;
int bist_errors = 0;
uint64_t tmp;
uint64_t base_addr;
/* Put message on LED display */
if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM)
ebt3000_str_write("CVMX ");
/* Check BIST results for COP0 registers, some values only meaningful in pass 2 */
CVMX_MF_CACHE_ERR(bist_val);
mask = (1ULL<<32) | (1ULL<<33) | (1ULL<<34) | (1ULL<<35) | (1ULL<<36);
bist_val &= mask;
if (bist_val)
{
printf("BIST FAILURE: COP0_CACHE_ERR: 0x%llx\n", (unsigned long long)bist_val);
bist_errors++;
}
mask = 0xfc00000000000000ull;
CVMX_MF_CVM_MEM_CTL(bist_val);
bist_val &= mask;
if (bist_val)
{
printf("BIST FAILURE: COP0_CVM_MEM_CTL: 0x%llx\n", (unsigned long long)bist_val);
bist_errors++;
}
/* Set up 4 cache lines of local memory, make available from Kernel space */
CVMX_MF_CVM_MEM_CTL(tmp);
tmp &= ~0x1ffull;
tmp |= 0x104ull;
/* Set WBTHRESH=4 as per Core-14752 errata in cn63xxp1.X. */
if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X))
{
tmp &= ~(0xfull << 11);
tmp |= 4 << 11;
}
CVMX_MT_CVM_MEM_CTL(tmp);
#if CVMX_USE_1_TO_1_TLB_MAPPINGS
/* Check to see if the bootloader is indicating that the application is outside
** of the 0x10000000 0x20000000 range, in which case we can't use 1-1 mappings */
if (cvmx_sysinfo_get()->bootloader_config_flags & CVMX_BOOTINFO_CFG_FLAG_OVERSIZE_TLB_MAPPING)
{
printf("ERROR: 1-1 TLB mappings configured and oversize application loaded.\n");
printf("ERROR: Either 1-1 TLB mappings must be disabled or application size reduced.\n");
exit(-1);
}
/* Create 1-1 Mappings for all DRAM up to 8 gigs, excluding the low 1 Megabyte. This area
** is reserved for the bootloader and exception vectors. By not mapping this area, NULL pointer
** dereferences will be caught with TLB exceptions. Exception handlers should be written
** using XKPHYS or KSEG0 addresses. */
#if CVMX_NULL_POINTER_PROTECT
/* Exclude low 1 MByte from mapping to detect NULL pointer accesses.
** The only down side of this is it uses more TLB mappings */
cvmx_core_add_fixed_tlb_mapping_bits(0x0, 0x0, 0x100000 | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, CVMX_TLB_PAGEMASK_1M);
cvmx_core_add_fixed_tlb_mapping(0x200000, 0x200000, 0x300000, CVMX_TLB_PAGEMASK_1M);
cvmx_core_add_fixed_tlb_mapping(0x400000, 0x400000, 0x500000, CVMX_TLB_PAGEMASK_1M);
cvmx_core_add_fixed_tlb_mapping(0x600000, 0x600000, 0x700000, CVMX_TLB_PAGEMASK_1M);
cvmx_core_add_fixed_tlb_mapping(0x800000, 0x800000, 0xC00000, CVMX_TLB_PAGEMASK_4M);
cvmx_core_add_fixed_tlb_mapping(0x1000000, 0x1000000, 0x1400000, CVMX_TLB_PAGEMASK_4M);
cvmx_core_add_fixed_tlb_mapping(0x1800000, 0x1800000, 0x1c00000, CVMX_TLB_PAGEMASK_4M);
cvmx_core_add_fixed_tlb_mapping(0x2000000, 0x2000000, 0x3000000, CVMX_TLB_PAGEMASK_16M);
cvmx_core_add_fixed_tlb_mapping(0x4000000, 0x4000000, 0x5000000, CVMX_TLB_PAGEMASK_16M);
cvmx_core_add_fixed_tlb_mapping(0x6000000, 0x6000000, 0x7000000, CVMX_TLB_PAGEMASK_16M);
#else
/* Map entire low 128 Megs, including 0x0 */
cvmx_core_add_fixed_tlb_mapping(0x0, 0x0, 0x4000000ULL, CVMX_TLB_PAGEMASK_64M);
#endif
cvmx_core_add_fixed_tlb_mapping(0x8000000ULL, 0x8000000ULL, 0xc000000ULL, CVMX_TLB_PAGEMASK_64M);
if (OCTEON_IS_MODEL(OCTEON_CN6XXX))
{
for (base_addr = 0x20000000ULL; base_addr < (cvmx_sysinfo_get()->system_dram_size + 0x10000000ULL); base_addr += 0x20000000ULL)
{
if (0 > cvmx_core_add_fixed_tlb_mapping(base_addr, base_addr, base_addr + 0x10000000ULL, CVMX_TLB_PAGEMASK_256M))
{
printf("ERROR adding 1-1 TLB mapping for address 0x%llx\n", (unsigned long long)base_addr);
/* Exit from here, as expected memory mappings aren't set
up if this fails */
exit(-1);
}
}
}
else
{
/* Create 1-1 mapping for next 256 megs
** bottom page is not valid */
cvmx_core_add_fixed_tlb_mapping_bits(0x400000000ULL, 0, 0x410000000ULL | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, CVMX_TLB_PAGEMASK_256M);
/* Map from 0.5 up to the installed memory size in 512 MByte chunks. If this loop runs out of memory,
** the NULL pointer detection can be disabled to free up more TLB entries. */
if (cvmx_sysinfo_get()->system_dram_size > 0x20000000ULL)
{
for (base_addr = 0x20000000ULL; base_addr <= (cvmx_sysinfo_get()->system_dram_size - 0x20000000ULL); base_addr += 0x20000000ULL)
{
if (0 > cvmx_core_add_fixed_tlb_mapping(base_addr, base_addr, base_addr + 0x10000000ULL, CVMX_TLB_PAGEMASK_256M))
{
printf("ERROR adding 1-1 TLB mapping for address 0x%llx\n", (unsigned long long)base_addr);
/* Exit from here, as expected memory mappings
aren't set up if this fails */
exit(-1);
}
}
}
}
#endif
cvmx_sysinfo_t *sys_info_ptr = cvmx_sysinfo_get();
cvmx_bootmem_init(sys_info_ptr->phy_mem_desc_addr);
return(0);
}
void __cvmx_app_exit(void)
{
cvmx_debug_finish();
if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)
{
CVMX_BREAK;
}
/* Hang forever, until more appropriate stand alone simple executive
exit() is implemented */
while (1);
}