static int identify_omap(void)
{
unsigned int id_code;
if (mem_read(ID_CODE, &id_code) != 0)
return OMAPCONF_ERR_REG_ACCESS;
dprintf("%s(): ID_CODE = 0x%08X\n", __func__, id_code);
switch (id_code) {
case OMAP5432_ES_2_0_ID_CODE:
cpu_set(OMAP_5432);
cpu_revision_set(REV_ES2_0);
break;
case OMAP5432_ES_1_0_ID_CODE:
cpu_set(OMAP_5432);
cpu_revision_set(REV_ES1_0);
break;
case OMAP5430_ES_2_0_ID_CODE:
cpu_set(OMAP_5430);
cpu_revision_set(REV_ES2_0);
break;
case OMAP5430_ES_1_0_ID_CODE:
case 0x0000002F: /* Zebu */
cpu_set(OMAP_5430);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4470_ES_1_0_ID_CODE:
cpu_set(OMAP_4470);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4460_ES_1_1_ID_CODE:
cpu_set(OMAP_4460);
cpu_revision_set(REV_ES1_1);
break;
case OMAP4460_ES_1_0_ID_CODE:
cpu_set(OMAP_4460);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4430_ES_2_3_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_3);
break;
case OMAP4430_ES_2_2_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_2);
break;
case OMAP4430_ES_2_1_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_1);
break;
case OMAP4430_ES_2_0_ID_CODE:
case OMAP4430_ES_1_0_ID_CODE:
/*
* Due to fusing issue between ES1.0 and ES2.0 (same code...),
* revision cannot be correctly detected.
* Workaround is to use Cortex-A9 own revision code, which did
* changed, but it is not accessible from user space...
* Only way is to use /proc/cpuinfo.
*/
cpu_set(OMAP_4430);
cpu_rev_get_from_cpuinfo(&cpu_rev);
switch (cpu_rev) {
case REV_ES2_0:
cpu_revision_set(REV_ES2_0);
break;
case REV_ES1_0:
cpu_revision_set(REV_ES1_0);
break;
default:
dprintf("%s(): unknown ARM Cortex-A9!\n", __func__);
return OMAPCONF_ERR_UNEXPECTED;
}
break;
default:
/* Retrieve DRA7 chip & ES in default case */
if (mem_read(DRA7_ID_CODE, &id_code) != 0)
return OMAPCONF_ERR_REG_ACCESS;
dprintf("%s(): ID_CODE = 0x%08X\n", __func__, id_code);
switch (id_code) {
case DRA72X_ES_1_0_ID_CODE:
cpu_set(DRA_72X);
cpu_revision_set(REV_ES1_0);
break;
case DRA74X_ES_1_1_ID_CODE:
cpu_set(DRA_75X);
cpu_revision_set(REV_ES1_1);
break;
case DRA74X_ES_1_0_ID_CODE:
cpu_set(DRA_75X);
cpu_revision_set(REV_ES1_0);
break;
case DRA74X_ES_2_0_ID_CODE:
cpu_set(DRA_75X);
cpu_revision_set(REV_ES2_0);
break;
default:
dprintf("%s(): OMAP ID CODE not recognized! (0x%08X)\n",
__func__, id_code);
return OMAPCONF_ERR_CPU;
}
}
return 0;
}
/* ------------------------------------------------------------------------*//**
* @FUNCTION cpu_detect
* @BRIEF Detect cpu and set internal global variables accordingly
* @RETURNS 0 on success
* OMAPCONF_ERR_UNEXPECTED
* OMAPCONF_ERR_CPU if cpu not recognized
* OMAPCONF_ERR_REG_ACCESS
* @param[in] none
* @DESCRIPTION Detect cpu and set internal global variables accordingly
*//*------------------------------------------------------------------------ */
int cpu_detect(void)
{
unsigned int id_code;
unsigned int status;
unsigned int prod_id_1;
#ifdef CPUID_DEBUG
char s[CPU_FULL_NAME_MAX_LENGTH];
char rev_s[CPU_REVISION_MAX_NAME_LENGTH];
char dev_type_s[CPU_DEVICE_TYPE_MAX_NAME_LENGTH];
#endif
/* Init variables */
cpu_init();
/* Retrieve OMAP chip & ES */
if (mem_read(ID_CODE, &id_code) != 0)
return OMAPCONF_ERR_REG_ACCESS;
dprintf("%s(): ID_CODE = 0x%08X\n", __func__, id_code);
switch (id_code) {
case OMAP5432_ES_1_0_ID_CODE:
cpu_set(OMAP_5432);
cpu_revision_set(REV_ES1_0);
break;
case OMAP5430_ES_1_0_ID_CODE:
case 0x0000002F: /* Zebu */
cpu_set(OMAP_5430);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4470_ES_1_0_ID_CODE:
cpu_set(OMAP_4470);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4460_ES_1_1_ID_CODE:
cpu_set(OMAP_4460);
cpu_revision_set(REV_ES1_1);
break;
case OMAP4460_ES_1_0_ID_CODE:
cpu_set(OMAP_4460);
cpu_revision_set(REV_ES1_0);
break;
case OMAP4430_ES_2_3_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_3);
break;
case OMAP4430_ES_2_2_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_2);
break;
case OMAP4430_ES_2_1_ID_CODE:
cpu_set(OMAP_4430);
cpu_revision_set(REV_ES2_1);
break;
case OMAP4430_ES_2_0_ID_CODE:
case OMAP4430_ES_1_0_ID_CODE:
/*
* Due to fusing issue between ES1.0 and ES2.0 (same code...),
* revision cannot be correctly detected.
* Workaround is to use Cortex-A9 own revision code, which did
* changed, but it is not accessible from user space...
* Only way is to use /proc/cpuinfo.
*/
cpu_set(OMAP_4430);
cpu_rev_get_from_cpuinfo(&cpu_rev);
switch (cpu_rev) {
case REV_ES2_0:
cpu_revision_set(REV_ES2_0);
break;
case REV_ES1_0:
cpu_revision_set(REV_ES1_0);
break;
default:
dprintf("%s(): unknown ARM Cortex-A9!\n", __func__);
return OMAPCONF_ERR_UNEXPECTED;
}
break;
default:
dprintf("%s(): OMAP ID CODE not recognized! (0x%08X)\n",
__func__, id_code);
return OMAPCONF_ERR_CPU;
}
dprintf("%s(): Chip is %s ES%s\n", __func__,
cpu_gets(s), cpu_revision_gets(rev_s));
/* Retrieve device type */
if (mem_read(OMAP44XX_STATUS, &status) != 0)
return OMAPCONF_ERR_REG_ACCESS;
dprintf("%s(): OMAP44XX_STATUS = 0x%08X\n", __func__, status);
switch (extract_bitfield(status, 8, 2)) {
case 3:
cpu_device_type_set(DEV_GP);
break;
case 2:
cpu_device_type_set(DEV_HS);
break;
case 1:
cpu_device_type_set(DEV_EMU);
break;
default:
cpu_device_type_set(DEV_TEST);
}
dprintf("%s(): Device Type is %s\n", __func__,
cpu_device_type_gets(dev_type_s));
/* Retrieve silicon performance type from EFuse */
if (mem_read(CONTROL_STD_FUSE_PROD_ID_1, &prod_id_1) != 0) {
fprintf(stderr,
"omapconf (%s()): could not read CONTROL_STD_FUSE_PROD_ID_1 register!\n",
__func__);
return OMAPCONF_ERR_REG_ACCESS;
}
dprintf("%s(): CONTROL_STD_FUSE_PROD_ID_1 = 0x%08X\n",
__func__, prod_id_1);
si_type = (silicon_type) extract_bitfield(prod_id_1, 16, 2);
dprintf("%s(): Silicon performance type is %s (%uMHz)\n",
__func__, cpu_silicon_type_gets(s),
cpu_silicon_max_speed_get());
/* Set CPU full name */
cpu_full_name_set();
dprintf("%s(): CPU full name is %s\n", __func__, cpu_full_name);
return 0;
}
