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49 * This module provides system/board/application information obtained by the bootloader.
51 * <hr>$Revision: 70030 $<hr>
55 #ifdef CVMX_BUILD_FOR_LINUX_KERNEL
56 #include <linux/module.h>
58 #include <asm/octeon/cvmx.h>
59 #include <asm/octeon/cvmx-spinlock.h>
60 #include <asm/octeon/cvmx-sysinfo.h>
63 #include "cvmx-spinlock.h"
64 #include "cvmx-sysinfo.h"
69 * This structure defines the private state maintained by sysinfo module.
72 #if defined(CVMX_BUILD_FOR_UBOOT) && CONFIG_OCTEON_NAND_STAGE2
73 /* For u-boot, put this in the text section so that we can use this in early
74 ** boot when running from ram(or L2 cache). This is primarily used for NAND
75 ** access during NAND boot. The 'data_in_text' section is merged with the
76 ** text section by the linker script to avoid an assembler warning. */
79 cvmx_sysinfo_t sysinfo; /**< system information */
80 cvmx_spinlock_t lock; /**< mutex spinlock */
82 } state __attribute__ ((section (".data_in_text"))) = {
83 .lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
86 CVMX_SHARED static struct {
88 struct cvmx_sysinfo sysinfo; /**< system information */
89 cvmx_spinlock_t lock; /**< mutex spinlock */
92 .lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
96 #ifdef CVMX_BUILD_FOR_LINUX_USER
97 /* Global variable with the processor ID since we can't read it directly */
98 CVMX_SHARED uint32_t cvmx_app_init_processor_id;
101 /* Global variables that define the min/max of the memory region set up for 32 bit userspace access */
102 uint64_t linux_mem32_min = 0;
103 uint64_t linux_mem32_max = 0;
104 uint64_t linux_mem32_wired = 0;
105 uint64_t linux_mem32_offset = 0;
108 * This function returns the application information as obtained
109 * by the bootloader. This provides the core mask of the cores
110 * running the same application image, as well as the physical
111 * memory regions available to the core.
113 * @return Pointer to the boot information structure
116 struct cvmx_sysinfo *cvmx_sysinfo_get(void)
118 return &(state.sysinfo);
121 void cvmx_sysinfo_add_self_to_core_mask(void)
123 int core = cvmx_get_core_num();
124 uint32_t core_mask = 1 << core;
126 cvmx_spinlock_lock(&state.lock);
127 state.sysinfo.core_mask = state.sysinfo.core_mask | core_mask;
128 cvmx_spinlock_unlock(&state.lock);
131 void cvmx_sysinfo_remove_self_from_core_mask(void)
133 int core = cvmx_get_core_num();
134 uint32_t core_mask = 1 << core;
136 cvmx_spinlock_lock(&state.lock);
137 state.sysinfo.core_mask = state.sysinfo.core_mask & ~core_mask;
138 cvmx_spinlock_unlock(&state.lock);
141 #ifdef CVMX_BUILD_FOR_LINUX_KERNEL
142 EXPORT_SYMBOL(cvmx_sysinfo_get);
147 * This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.)
148 * to configure the minimal fields that are required to use
149 * simple executive files directly.
151 * Locking (if required) must be handled outside of this
154 * @param phy_mem_desc_addr
155 * Address of the global physical memory descriptor (bootmem
157 * @param board_type Octeon board type enumeration
159 * @param board_rev_major
160 * Board major revision
161 * @param board_rev_minor
162 * Board minor revision
163 * @param cpu_clock_hz
164 * CPU clock freqency in hertz
169 int cvmx_sysinfo_minimal_initialize(uint64_t phy_mem_desc_addr, uint16_t board_type, uint8_t board_rev_major,
170 uint8_t board_rev_minor, uint32_t cpu_clock_hz)
174 memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
175 state.sysinfo.phy_mem_desc_addr = phy_mem_desc_addr;
176 state.sysinfo.board_type = board_type;
177 state.sysinfo.board_rev_major = board_rev_major;
178 state.sysinfo.board_rev_minor = board_rev_minor;
179 state.sysinfo.cpu_clock_hz = cpu_clock_hz;
184 #ifdef CVMX_BUILD_FOR_LINUX_USER
186 * Initialize the sysinfo structure when running on
187 * Octeon under Linux userspace
189 void cvmx_sysinfo_linux_userspace_initialize(void)
191 cvmx_sysinfo_t *system_info = cvmx_sysinfo_get();
192 memset(system_info, 0, sizeof(cvmx_sysinfo_t));
194 system_info->core_mask = 0;
195 system_info->init_core = -1;
197 FILE *infile = fopen("/proc/octeon_info", "r");
200 perror("Error opening /proc/octeon_info");
204 while (!feof(infile))
207 if (fgets(buffer, sizeof(buffer), infile))
209 const char *field = strtok(buffer, " ");
210 const char *valueS = strtok(NULL, " ");
215 unsigned long long value;
216 sscanf(valueS, "%lli", &value);
218 if (strcmp(field, "dram_size:") == 0)
219 system_info->system_dram_size = value << 20;
220 else if (strcmp(field, "phy_mem_desc_addr:") == 0)
221 system_info->phy_mem_desc_addr = value;
222 else if (strcmp(field, "eclock_hz:") == 0)
223 system_info->cpu_clock_hz = value;
224 else if (strcmp(field, "dclock_hz:") == 0)
225 system_info->dram_data_rate_hz = value * 2;
226 else if (strcmp(field, "board_type:") == 0)
227 system_info->board_type = value;
228 else if (strcmp(field, "board_rev_major:") == 0)
229 system_info->board_rev_major = value;
230 else if (strcmp(field, "board_rev_minor:") == 0)
231 system_info->board_rev_minor = value;
232 else if (strcmp(field, "board_serial_number:") == 0)
233 strncpy(system_info->board_serial_number, valueS, sizeof(system_info->board_serial_number));
234 else if (strcmp(field, "mac_addr_base:") == 0)
238 sscanf(valueS, "%02x:%02x:%02x:%02x:%02x:%02x", m+0, m+1, m+2, m+3, m+4, m+5);
240 system_info->mac_addr_base[i] = m[i];
242 else if (strcmp(field, "mac_addr_count:") == 0)
243 system_info->mac_addr_count = value;
244 else if (strcmp(field, "fdt_addr:") == 0)
245 system_info->fdt_addr = UNMAPPED_PTR(value);
246 else if (strcmp(field, "32bit_shared_mem_base:") == 0)
247 linux_mem32_min = value;
248 else if (strcmp(field, "32bit_shared_mem_size:") == 0)
249 linux_mem32_max = linux_mem32_min + value - 1;
250 else if (strcmp(field, "processor_id:") == 0)
251 cvmx_app_init_processor_id = value;
252 else if (strcmp(field, "32bit_shared_mem_wired:") == 0)
253 linux_mem32_wired = value;
258 * set up the feature map.
260 octeon_feature_init();
262 system_info->cpu_clock_hz = cvmx_clock_get_rate(CVMX_CLOCK_CORE);