Can not launch u-boot spl
I figured things out. The problem was in SRAM settings in u-boot. Now SPL and u-boot loads properly. Just in case here are my settings that i changed for Kingston DDR3L chip:
/* Kingston D2516EC4BXGGB on PH8700*/
#define D2516EC4BXGGB_EMIF_READ_LATENCY 0x07
#define D2516EC4BXGGB_EMIF_TIM1 0x0888A99B
#define D2516EC4BXGGB_EMIF_TIM2 0x285B7FDA
#define D2516EC4BXGGB_EMIF_TIM3 0x501F857F
#define D2516EC4BXGGB_EMIF_SDCFG 0x63815332
#define D2516EC4BXGGB_EMIF_SDREF 0x0000049e
#define D2516EC4BXGGB_ZQ_CFG 0x50074BE4
#define D2516EC4BXGGB_RATIO 0x80
#define D2516EC4BXGGB_INVERT_CLKOUT 0x0
#define D2516EC4BXGGB_RD_DQS 0x38
#define D2516EC4BXGGB_WR_DQS 0x44
#define D2516EC4BXGGB_PHY_WR_DATA 0x7D
#define D2516EC4BXGGB_PHY_FIFO_WE 0x94
#define D2516EC4BXGGB_IOCTRL_VALUE 0x0000018B