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47 * This module provides system/board/application information obtained by the bootloader.
49 * <hr>$Revision: 41586 $<hr>
54 #include "cvmx-spinlock.h"
55 #include "cvmx-sysinfo.h"
59 * This structure defines the private state maintained by sysinfo module.
62 #if defined(CVMX_BUILD_FOR_UBOOT) && CONFIG_OCTEON_NAND_STAGE2
63 /* For u-boot, put this in the text section so that we can use this in early
64 ** boot when running from ram(or L2 cache). This is primarily used for NAND
65 ** access during NAND boot. The 'data_in_text' section is merged with the
66 ** text section by the linker script to avoid an assembler warning. */
69 cvmx_sysinfo_t sysinfo; /**< system information */
70 cvmx_spinlock_t lock; /**< mutex spinlock */
72 } state __attribute__ ((section (".data_in_text"))) = {
73 .lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
76 CVMX_SHARED static struct {
78 cvmx_sysinfo_t sysinfo; /**< system information */
79 cvmx_spinlock_t lock; /**< mutex spinlock */
82 .lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
86 #ifdef CVMX_BUILD_FOR_LINUX_USER
87 /* Global variable with the processor ID since we can't read it directly */
88 CVMX_SHARED uint32_t cvmx_app_init_processor_id;
91 /* Global variables that define the min/max of the memory region set up for 32 bit userspace access */
92 uint64_t linux_mem32_min = 0;
93 uint64_t linux_mem32_max = 0;
94 uint64_t linux_mem32_wired = 0;
95 uint64_t linux_mem32_offset = 0;
98 * This function returns the application information as obtained
99 * by the bootloader. This provides the core mask of the cores
100 * running the same application image, as well as the physical
101 * memory regions available to the core.
103 * @return Pointer to the boot information structure
106 cvmx_sysinfo_t * cvmx_sysinfo_get(void)
108 return &(state.sysinfo);
113 * This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.)
114 * to configure the minimal fields that are required to use
115 * simple executive files directly.
117 * Locking (if required) must be handled outside of this
120 * @param phy_mem_desc_ptr
121 * Pointer to global physical memory descriptor (bootmem descriptor)
122 * @param board_type Octeon board type enumeration
124 * @param board_rev_major
125 * Board major revision
126 * @param board_rev_minor
127 * Board minor revision
128 * @param cpu_clock_hz
129 * CPU clock freqency in hertz
134 int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr, uint16_t board_type, uint8_t board_rev_major,
135 uint8_t board_rev_minor, uint32_t cpu_clock_hz)
139 memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
140 state.sysinfo.phy_mem_desc_ptr = phy_mem_desc_ptr;
141 state.sysinfo.board_type = board_type;
142 state.sysinfo.board_rev_major = board_rev_major;
143 state.sysinfo.board_rev_minor = board_rev_minor;
144 state.sysinfo.cpu_clock_hz = cpu_clock_hz;
149 #ifdef CVMX_BUILD_FOR_LINUX_USER
151 * Initialize the sysinfo structure when running on
152 * Octeon under Linux userspace
154 void cvmx_sysinfo_linux_userspace_initialize(void)
156 cvmx_sysinfo_t *system_info = cvmx_sysinfo_get();
157 memset(system_info, 0, sizeof(cvmx_sysinfo_t));
159 system_info->core_mask = 0;
160 system_info->init_core = -1;
162 FILE *infile = fopen("/proc/octeon_info", "r");
165 perror("Error opening /proc/octeon_info");
169 while (!feof(infile))
172 if (fgets(buffer, sizeof(buffer), infile))
174 const char *field = strtok(buffer, " ");
175 const char *valueS = strtok(NULL, " ");
180 unsigned long long value;
181 sscanf(valueS, "%lli", &value);
183 if (strcmp(field, "dram_size:") == 0)
184 system_info->system_dram_size = value;
185 else if (strcmp(field, "phy_mem_desc_addr:") == 0)
186 system_info->phy_mem_desc_ptr = cvmx_phys_to_ptr(value);
187 else if (strcmp(field, "eclock_hz:") == 0)
188 system_info->cpu_clock_hz = value;
189 else if (strcmp(field, "dclock_hz:") == 0)
190 system_info->dram_data_rate_hz = value * 2;
191 else if (strcmp(field, "board_type:") == 0)
192 system_info->board_type = value;
193 else if (strcmp(field, "board_rev_major:") == 0)
194 system_info->board_rev_major = value;
195 else if (strcmp(field, "board_rev_minor:") == 0)
196 system_info->board_rev_minor = value;
197 else if (strcmp(field, "board_serial_number:") == 0)
198 strncpy(system_info->board_serial_number, valueS, sizeof(system_info->board_serial_number));
199 else if (strcmp(field, "mac_addr_base:") == 0)
203 sscanf(valueS, "%02x:%02x:%02x:%02x:%02x:%02x", m+0, m+1, m+2, m+3, m+4, m+5);
205 system_info->mac_addr_base[i] = m[i];
207 else if (strcmp(field, "mac_addr_count:") == 0)
208 system_info->mac_addr_count = value;
209 else if (strcmp(field, "32bit_shared_mem_base:") == 0)
210 linux_mem32_min = value;
211 else if (strcmp(field, "32bit_shared_mem_size:") == 0)
212 linux_mem32_max = linux_mem32_min + value - 1;
213 else if (strcmp(field, "processor_id:") == 0)
214 cvmx_app_init_processor_id = value;
215 else if (strcmp(field, "32bit_shared_mem_wired:") == 0)
216 linux_mem32_wired = value;