diff options
| -rw-r--r-- | board/freescale/mx53_evk/mx53_evk.c | 170 |
1 files changed, 167 insertions, 3 deletions
diff --git a/board/freescale/mx53_evk/mx53_evk.c b/board/freescale/mx53_evk/mx53_evk.c index 9526b2d..6be0b37 100644 --- a/board/freescale/mx53_evk/mx53_evk.c +++ b/board/freescale/mx53_evk/mx53_evk.c @@ -282,6 +282,168 @@ void setup_core_voltages(void) /* Raise the core frequency to 800MHz */ writel(0x0, CCM_BASE_ADDR + CLKCTL_CACRR); } + +static int __read_adc_channel(unsigned int chan) +{ + unsigned char buf[4] = { 0 }; + + buf[0] = (0xb0 | ((chan & 0x1) << 3) | ((chan >> 1) & 0x7)); + + /* LTC2495 need 410ms delay */ + udelay(410000); + + if (i2c_write(0x14, chan, 0, &buf[0], 1)) { + printf("%s:i2c_write:error\n", __func__); + return -1; + } + + /* LTC2495 need 410ms delay*/ + udelay(410000); + + if (i2c_read(0x14, chan, 0, &buf[0], 3)) { + printf("%s:i2c_read:error\n", __func__); + return -1; + } + + return buf[0] << 16 | buf[1] << 8 | buf[2]; +} + +static int __lookup_board_id(int adc_val) +{ + int id; + + if (adc_val < 0x3FFFC0) + id = 0; + else if (adc_val < 0x461863) + id = 1; + else if (adc_val < 0x4C30C4) + id = 2; + else if (adc_val < 0x524926) + id = 3; + else if (adc_val < 0x586187) + id = 4; + else if (adc_val < 0x5E79E9) + id = 5; + else if (adc_val < 0x64924A) + id = 6; + else if (adc_val < 0x6AAAAC) + id = 7; + else if (adc_val < 0x70C30D) + id = 8; + else if (adc_val < 0x76DB6F) + id = 9; + else if (adc_val < 0x7CF3D0) + id = 10; + else if (adc_val < 0x830C32) + id = 11; + else if (adc_val < 0x892493) + id = 12; + else if (adc_val < 0x8F3CF5) + id = 13; + else if (adc_val < 0x955556) + id = 14; + else if (adc_val < 0x9B6DB8) + id = 15; + else if (adc_val < 0xA18619) + id = 16; + else if (adc_val < 0xA79E7B) + id = 17; + else if (adc_val < 0xADB6DC) + id = 18; + else if (adc_val < 0xB3CF3E) + id = 19; + else if (adc_val < 0xB9E79F) + id = 20; + else if (adc_val < 0xC00000) + id = 21; + else + return -1; + + return id; +} + +static int __print_board_info(int id0, int id1) +{ + int ret = 0; + + switch (id0) { + case 21: + switch (id1) { + case 15: + printf("MX53-EVK with DDR2 1GByte RevB\n"); + + break; + case 18: + printf("MX53-EVK with DDR2 2GByte RevA1\n"); + + break; + case 19: + printf("MX53-EVK with DDR2 2GByte RevA2\n"); + break; + default: + printf("Unkown board id1:%d\n", id1); + ret = -1; + + break; + } + + break; + case 11: + switch (id1) { + case 1: + printf("MX53 1.5V DDR3 x8 CPU Card, Rev. A\n"); + + break; + case 11: + printf("MX53 1.8V DDR2 x8 CPU Card, Rev. A\n"); + + break; + default: + printf("Unkown board id1:%d\n", id1); + ret = -1; + + break; + } + + break; + default: + printf("Unkown board id0:%d\n", id0); + + break; + } + + return ret; +} + +int identify_board_id(void) +{ + int ret = 0; + int bd_id0, bd_id1; + +#define CPU_CHANNEL_ID0 0xc +#define CPU_CHANNEL_ID1 0xd + + ret = bd_id0 = __read_adc_channel(CPU_CHANNEL_ID0); + if (ret < 0) + return ret; + + ret = bd_id1 = __read_adc_channel(CPU_CHANNEL_ID1); + if (ret < 0) + return ret; + + ret = bd_id0 = __lookup_board_id(bd_id0); + if (ret < 0) + return ret; + + ret = bd_id1 = __lookup_board_id(bd_id1); + if (ret < 0) + return ret; + + ret = __print_board_info(bd_id0, bd_id1); + + return ret; + +} #endif void spi_io_init(struct imx_spi_dev_t *dev) @@ -520,10 +682,12 @@ int board_late_init(void) int checkboard(void) { - printf("Board: MX53 EVK "); - - printf("1.0 ["); + printf("Board: "); +#ifdef CONFIG_I2C_MXC + identify_board_id(); +#endif + printf("Boot Reason: ["); switch (__REG(SRC_BASE_ADDR + 0x8)) { case 0x0001: |