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| Current File : //sys/contrib/octeon-sdk/cvmx-sysinfo.c |
/***********************license start***************
* Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
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*
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*
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* 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
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* regulations, and may be subject to export or import regulations in other
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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***********************license end**************************************/
/**
* @file
*
* This module provides system/board/application information obtained by the bootloader.
*
* <hr>$Revision: 52004 $<hr>
*
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <linux/module.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-spinlock.h>
#include <asm/octeon/cvmx-sysinfo.h>
#else
#include "cvmx.h"
#include "cvmx-spinlock.h"
#include "cvmx-sysinfo.h"
#endif
/**
* This structure defines the private state maintained by sysinfo module.
*
*/
#if defined(CVMX_BUILD_FOR_UBOOT) && CONFIG_OCTEON_NAND_STAGE2
/* For u-boot, put this in the text section so that we can use this in early
** boot when running from ram(or L2 cache). This is primarily used for NAND
** access during NAND boot. The 'data_in_text' section is merged with the
** text section by the linker script to avoid an assembler warning. */
static struct {
cvmx_sysinfo_t sysinfo; /**< system information */
cvmx_spinlock_t lock; /**< mutex spinlock */
} state __attribute__ ((section (".data_in_text"))) = {
.lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
};
#else
CVMX_SHARED static struct {
struct cvmx_sysinfo sysinfo; /**< system information */
cvmx_spinlock_t lock; /**< mutex spinlock */
} state = {
.lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
};
#endif
#ifdef CVMX_BUILD_FOR_LINUX_USER
/* Global variable with the processor ID since we can't read it directly */
CVMX_SHARED uint32_t cvmx_app_init_processor_id;
#endif
/* Global variables that define the min/max of the memory region set up for 32 bit userspace access */
uint64_t linux_mem32_min = 0;
uint64_t linux_mem32_max = 0;
uint64_t linux_mem32_wired = 0;
uint64_t linux_mem32_offset = 0;
/**
* This function returns the application information as obtained
* by the bootloader. This provides the core mask of the cores
* running the same application image, as well as the physical
* memory regions available to the core.
*
* @return Pointer to the boot information structure
*
*/
struct cvmx_sysinfo *cvmx_sysinfo_get(void)
{
return &(state.sysinfo);
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_sysinfo_get);
#endif
/**
* This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.)
* to configure the minimal fields that are required to use
* simple executive files directly.
*
* Locking (if required) must be handled outside of this
* function
*
* @param phy_mem_desc_addr
* Address of the global physical memory descriptor (bootmem
* descriptor)
* @param board_type Octeon board type enumeration
*
* @param board_rev_major
* Board major revision
* @param board_rev_minor
* Board minor revision
* @param cpu_clock_hz
* CPU clock freqency in hertz
*
* @return 0: Failure
* 1: success
*/
int cvmx_sysinfo_minimal_initialize(uint64_t phy_mem_desc_addr, uint16_t board_type, uint8_t board_rev_major,
uint8_t board_rev_minor, uint32_t cpu_clock_hz)
{
memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
state.sysinfo.phy_mem_desc_addr = phy_mem_desc_addr;
state.sysinfo.board_type = board_type;
state.sysinfo.board_rev_major = board_rev_major;
state.sysinfo.board_rev_minor = board_rev_minor;
state.sysinfo.cpu_clock_hz = cpu_clock_hz;
return(1);
}
#ifdef CVMX_BUILD_FOR_LINUX_USER
/**
* Initialize the sysinfo structure when running on
* Octeon under Linux userspace
*/
void cvmx_sysinfo_linux_userspace_initialize(void)
{
cvmx_sysinfo_t *system_info = cvmx_sysinfo_get();
memset(system_info, 0, sizeof(cvmx_sysinfo_t));
system_info->core_mask = 0;
system_info->init_core = -1;
FILE *infile = fopen("/proc/octeon_info", "r");
if (infile == NULL)
{
perror("Error opening /proc/octeon_info");
exit(-1);
}
while (!feof(infile))
{
char buffer[80];
if (fgets(buffer, sizeof(buffer), infile))
{
const char *field = strtok(buffer, " ");
const char *valueS = strtok(NULL, " ");
if (field == NULL)
continue;
if (valueS == NULL)
continue;
unsigned long long value;
sscanf(valueS, "%lli", &value);
if (strcmp(field, "dram_size:") == 0)
system_info->system_dram_size = value;
else if (strcmp(field, "phy_mem_desc_addr:") == 0)
system_info->phy_mem_desc_addr = value;
else if (strcmp(field, "eclock_hz:") == 0)
system_info->cpu_clock_hz = value;
else if (strcmp(field, "dclock_hz:") == 0)
system_info->dram_data_rate_hz = value * 2;
else if (strcmp(field, "board_type:") == 0)
system_info->board_type = value;
else if (strcmp(field, "board_rev_major:") == 0)
system_info->board_rev_major = value;
else if (strcmp(field, "board_rev_minor:") == 0)
system_info->board_rev_minor = value;
else if (strcmp(field, "board_serial_number:") == 0)
strncpy(system_info->board_serial_number, valueS, sizeof(system_info->board_serial_number));
else if (strcmp(field, "mac_addr_base:") == 0)
{
int i;
int m[6];
sscanf(valueS, "%02x:%02x:%02x:%02x:%02x:%02x", m+0, m+1, m+2, m+3, m+4, m+5);
for (i=0; i<6; i++)
system_info->mac_addr_base[i] = m[i];
}
else if (strcmp(field, "mac_addr_count:") == 0)
system_info->mac_addr_count = value;
else if (strcmp(field, "32bit_shared_mem_base:") == 0)
linux_mem32_min = value;
else if (strcmp(field, "32bit_shared_mem_size:") == 0)
linux_mem32_max = linux_mem32_min + value - 1;
else if (strcmp(field, "processor_id:") == 0)
cvmx_app_init_processor_id = value;
else if (strcmp(field, "32bit_shared_mem_wired:") == 0)
linux_mem32_wired = value;
}
}
system_info->cpu_clock_hz = cvmx_clock_get_rate(CVMX_CLOCK_CORE);
}
#endif