LM
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nrhw24: add pmic reset reason detection

This commit is contained in:
Rene Straub 2019-09-27 11:40:31 +02:00
parent a2438d7bd1
commit b1f61bad65
3 changed files with 65 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
board/nm/common/da9063.h
View File

@ -20,6 +20,9 @@ TODO: Add include for uint32_t (stdtypes.h)
#define CONFIG_PMIC_I2C_ADDR 0x58 /* Pages 0 and 1, Pages 2 and 3 -> 0x59 */
#define PMIC_REG_STATUS_A 0x01 /* Status of ON_KEY, WAKE, COMP1V2, DVC */
#define PMIC_REG_FAULT_LOG 0x05 /* PMIC fault log register, holding reset reason */
#define PMIC_FAULT_TWD_ERROR_MASK 0x01 /* Watchdog timeout detected */
#define PMIC_REG_CONTROL_D 0x11 /* Control register for blink/watchdog */
#define PMIC_REG_GPIO14_15 0x1C /* Configuration of GPIO14/15 (mode, wake) */
#define PMIC_REG_GPIO_MODE0_7 0x1D /* Control register for GPIOs 0..7 */

55
board/nm/nrhw24/board.c
View File

@ -338,7 +338,58 @@ static void init_pmic_spl(void)
/* Enable charging of RTC backup capacitor (1mA, 3.1V) */
(void)da9063_set_reg(PMIC_REG_BBAT_CONT, 0xAF);
/* TODO: Check documentation 1 mA correct ? */
da9063_release_i2c_bus(bus);
}
struct reset_registers {
uint32_t value;
uint32_t value_crc;
};
/* TODO: Move ethernet crc to dedicated file */
static uint32_t ether_crc(size_t len, uint8_t const *p)
{
uint32_t crc;
unsigned i;
crc = ~0;
while (len--) {
crc ^= *p++;
for (i = 0; i < 8; i++)
crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0);
}
/* an reverse the bits, cuz of way they arrive -- last-first */
crc = (crc >> 16) | (crc << 16);
crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
return crc;
}
void check_pmic_reset_reason(unsigned int reset_reason_shm_location)
{
volatile struct reset_registers* reset_regs = (struct reset_registers*)reset_reason_shm_location;
uint8_t state = 0x00;
int bus;
int ret;
bus = da9063_claim_i2c_bus();
ret = da9063_get_reg(PMIC_REG_FAULT_LOG, &state);
if ((ret == 0) && (state != 0)) {
if (state & PMIC_FAULT_TWD_ERROR_MASK) {
reset_regs->value = EXTERNAL_WATCHDOG_PATTERN;
reset_regs->value_crc = ether_crc(sizeof(reset_regs->value),
(const uint8_t*)&(reset_regs->value));
}
/* clear pmic fault log by writing back all bits currently set */
da9063_set_reg(PMIC_REG_FAULT_LOG, state);
}
da9063_release_i2c_bus(bus);
}
@ -364,6 +415,8 @@ void am33xx_spl_board_init(void)
/* Set MPU Frequency to what we detected now that voltages are set */
do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
check_pmic_reset_reason(RESET_REASON_SHM_LOCATION);
/* Debugger can place marker at end of SRAM to stop boot here */
if (is_jtag_boot(CONFIG_JTAG_MARKER_SPL))
{

9
include/configs/am335x_nrhw24.h
View File

@ -71,7 +71,8 @@ int eth_phy_timeout(void);
* 0x84000000 126MB RD_ADDR (ramdisk_addr_r), ramdisc loading address
* 0x8BE00000 2MB PXE_ADDR (pxefile_addr_r), pxe configuration file (pxe get command)
* 0x8C000000 1MB LOAD_ADDR (load_addr), loading address for generic files
* 0x8C100000 63MB KERNEL_ADDR_R (kernel_addr_r), kernel loading address (will be relocated to kernel_addr)
* 0x8C100000 31MB KERNEL_ADDR_R (kernel_addr_r), kernel loading address (will be relocated to kernel_addr)
* 0x8E000000 4B NRSW reset reason
* 0x90000000 256MB <>, Free space 512MB systems
* 0xA0000000 512MB <>, Free space, 1GB systems only
* 0xC0000000 End of RAM
@ -290,7 +291,7 @@ int eth_phy_timeout(void);
#define CONFIG_SYS_MEMTEST_START 0x84000000
#define CONFIG_SYS_MEMTEST_END 0x87900000
/* Enable for NRSW support
/* TODO: Enable for NRSW support
#define CONFIG_NM_LOGIN
#define CONFIG_CRYPT
*/
@ -302,6 +303,10 @@ int eth_phy_timeout(void);
#define CONFIG_JTAG_MARKER_SPL 0x402FFF00
#define CONFIG_JTAG_MARKER_UBOOT 0x807FFF00
/* TODO: NRSW PMIC Reset Reason */
#define RESET_REASON_SHM_LOCATION 0x8e000000
#define EXTERNAL_WATCHDOG_PATTERN 0x781f9ce2
/* SPL command is not needed */
#undef CONFIG_CMD_SPL