[875]fes begin commit:1417090655
[878]set pll start
[880]fix vccio detect value:0xc0
[887]periph0 has been enabled
[890]set pll end
[891][pmu]: bus read error
[894]board init ok
[895]beign to init dram
[898]ZQ value = 0x2e
[899]get_pmu_exist() = -1
[902]ddr_efuse_type: 0xa
[904]trefi:7.8ms
[907][AUTO DEBUG] single rank and full DQ!
[911]ddr_efuse_type: 0xa
[913]trefi:7.8ms
[915][AUTO DEBUG] rank 0 row = 13
[918][AUTO DEBUG] rank 0 bank = 8
[921][AUTO DEBUG] rank 0 page size = 2 KB
[925]DRAM BOOT DRIVE INFO: V0.33
[928]DRAM CLK = 792 MHz
[930]DRAM Type = 3 (2:DDR2,3:DDR3)
[934]DRAMC read ODT off.
[936]DRAM ODT value: 0x42.
[939]ddr_efuse_type: 0xa
[942]DRAM SIZE =128 M
[944]dram_tpr4:0x0
[945]PLL_DDR_CTRL_REG:0xf8004100
[948]DRAM_CLK_REG:0xc0000000
[951][TIMING DEBUG] MR2= 0x18
[954]DRAM simple test FAIL.
[956]fedcbaac != fedcbaa8 at address 44000040
[961]init dram fail

上面的报错是什么意思，芯片坏了吗？各个脚的供电都是正常的