天启android5.1系统无法在非1650批次号的rk3288w芯片上启动

挂掉log,说明在rtc初始化后挂掉

[    1.420240] ======== PULL WL_REG_ON(-) HIGH! ========
[ 1.420246] [WLAN_RFKILL]: rockchip_wifi_power:
[ 1.420253] [WLAN_RFKILL]: rockchip_wifi_ref_voltage:
[ 1.420258] [WLAN_RFKILL]: rockchip_wifi_ref_voltage: wifi io reference voltage control is disabled.
[ 1.420759] android_usb gadget: Mass Storage Function, version: //
[ 1.420768] android_usb gadget: Number of LUNs=
[ 1.420776] lun0: LUN: removable file: (no medium)
[ 1.420782] lun1: LUN: removable file: (no medium)
[ 1.420924] android_usb gadget: android_usb ready
[ 1.420991] sensor_init: Probe name sensors
[ 1.421006] sensor-dev.c v1. add angle calculation support between two gsensors --
[ 1.421532] rtc_hym8563 -: setting system clock to -- :: UTC ()
[ 1.430593] u?

开发板正常log,说明在snd-usb-audio初始化前挂掉

[    2.456978] sensor_init: Probe name sensors
[ 2.456995] sensor-dev.c v1. add angle calculation support between two gsensors --
[ 2.457525] rtc_hym8563 -: setting system clock to -- :: UTC ()
[ 2.463556] rockchip-spdif-card rockchip-spdif-card.: rk-hdmi-spdif-hifi <-> ff880000.rockchip-spdif mapping ok
[ 2.464517] ret
[ 2.464896] usbcore: registered new interface driver snd-usb-audio
[ 2.464903] ALSA device list:
[ 2.464908] #: RK_ES8323
[ 2.464912] #: RK-SPDIF-CARD

system.map
kernel 部分驱动启动顺序映射表

c0c11154 t __initcall_init7
c0c11158 t __initcall_sensor_init7
c0c1115c t __initcall_rtc_hctosys7
c0c11160 t __initcall_sync_debugfs_init7
c0c11164 t __initcall_clk_debug_init7
c0c11168 t __initcall_rockchip_headset_init7
c0c1116c t __initcall_rockchip_spdif_init7
c0c11170 t __initcall_tcp_congestion_default7
c0c11174 t __initcall_tcp_fastopen_init7
c0c11178 t __initcall_ip_auto_config7
c0c1117c t __initcall_drm_misc_init7s
c0c11180 t __initcall_clk_disable_unused7s
c0c11184 t __initcall_snd_usb_audio_init7s
c0c11188 t __initcall_alsa_sound_last_init7s
c0c1118c t __initcall_initialize_hashrnd7s
c0c11190 T __con_initcall_end
c0c11190 T __con_initcall_start
c0c11190 T __initcall_end
c0c11190 t __initcall_selinux_init

在rtc_hctosys与snd_usb_audio启动之间有以下驱动程序初始化

c0c11160 t __initcall_sync_debugfs_init7
c0c11164 t __initcall_clk_debug_init7
c0c11168 t __initcall_rockchip_headset_init7
c0c1116c t __initcall_rockchip_spdif_init7
c0c11170 t __initcall_tcp_congestion_default7
c0c11174 t __initcall_tcp_fastopen_init7
c0c11178 t __initcall_ip_auto_config7
c0c1117c t __initcall_drm_misc_init7s
c0c11180 t __initcall_clk_disable_unused7s

在这些驱动函数初始化中加入log调试
挂掉log:

[    3.037934] sensor_init: Probe name sensors
[ 3.037949] sensor-dev.c v1. add angle calculation support between two gsensors --
[ 3.038475] rtc_hym8563 -: setting system clock to -- :: UTC ()
[ 3.044644] rockchip-spdif-card rockchip-spdif-card.: rk-hdmi-spdif-hifi <-> ff880000.rockchip-spdif mapping ok
[ 3.044959] carroll : tcp_fastopen_init
[ 3.044987] carroll : ip_auto_config
u�

正常启动log为:

[    2.456978] sensor_init: Probe name sensors
[ 2.456995] sensor-dev.c v1. add angle calculation support between two gsensors --
[ 2.457525] rtc_hym8563 -: setting system clock to -- :: UTC ()
[ 2.463556] rockchip-spdif-card rockchip-spdif-card.: rk-hdmi-spdif-hifi <-> ff880000.rockchip-spdif mapping ok
[ 2.463889] carroll : tcp_fastopen_init
[ 2.463917] carroll : ip_auto_config
[ 2.464517] ret
[ 2.464588] carroll : clk_disable_unused
[ 2.464896] usbcore: registered new interface driver snd-usb-audio
[ 2.464903] ALSA device list:
[ 2.464908] #: RK_ES8323
[ 2.464912] #: RK-SPDIF-CARD

对比上述驱动初始化顺序表发现只剩下一个驱动初始化的嫌疑
c0c1117c t __initcall_drm_misc_init7s

查找drm_misc_init在整个SDK中 grep drm_misc_init -r firefly-rk3288_android5.1_git_20180126/*

firefly-rk3288_android5.1_git_20180126/android.iws:      <find>drm_misc_init</find>
Binary file firefly-rk3288_android5.1_git_20180126/kernel/.tmp_vmlinux2 matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/vmlinux matches
firefly-rk3288_android5.1_git_20180126/kernel/System.map:c0be3a14 t drm_misc_init
firefly-rk3288_android5.1_git_20180126/kernel/System.map:c0c1111c t __initcall_drm_misc_init7s
Binary file firefly-rk3288_android5.1_git_20180126/kernel/pie/pie_stage1.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/pie/pie_stage2.o matches
firefly-rk3288_android5.1_git_20180126/kernel/.tmp_System.map:c0be3a14 t drm_misc_init
firefly-rk3288_android5.1_git_20180126/kernel/.tmp_System.map:c0c1111c t __initcall_drm_misc_init7s
Binary file firefly-rk3288_android5.1_git_20180126/kernel/vmlinux.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/built-in.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/built-in.o matches

发现并没有drm_misc_init的函数,到此嫌疑只能推给这几个文件了

Binary file firefly-rk3288_android5.1_git_20180126/kernel/.tmp_vmlinux2 matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/vmlinux matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/pie/pie_stage1.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/pie/pie_stage2.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/vmlinux.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/built-in.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/built-in.o matches

根据名字可能再筛选出以下三个

Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.o matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/built-in.o matches

可能是这两个的原因

Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd matches
Binary file firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.o matches

调试发现firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/目录下的Makefile发现
删除此驱动模块编译注册 obj-y                      += virtdrm.o
产生编译错误

  OBJCOPY pie/pie.bin
OBJCOPY pie/pie.bin.o
LD pie/built-in.o
GEN .version
CHK include/generated/compile.h
UPD include/generated/compile.h
CC init/version.o
LD init/built-in.o
drivers/built-in.o: In function `mmc_blk_shutdown':
binder.c:(.text+0x338e90): undefined reference to `mmc_blk_emmc_remove'
drivers/built-in.o: In function `mmc_blk_probe':
binder.c:(.text+0x33ae28): undefined reference to `mmc_blk_emmc_add'
drivers/built-in.o: In function `mmc_blk_remove':
binder.c:(.text+0x33b270): undefined reference to `mmc_blk_emmc_remove'
make: *** [vmlinux] Error
/work/rk3288/firefly-rk3288_android5.1_git_20180126
TARGET_PRODUCT=rk3288_box
TARGET_HARDWARE=rk30board
IMG_TARGET=all , ota = withoutkernel
system filesysystem is ext4

然后分别屏蔽代码调用

编译成功并且跳过之前挂掉的地方,但是在内核启动完成后挂了 log

[    2.446169] sensor_init: Probe name sensors
[ 2.446183] sensor-dev.c v1. add angle calculation support between two gsensors --
[ 2.446709] rtc_hym8563 -: setting system clock to -- :: UTC ()
[ 2.452731] rockchip-spdif-card rockchip-spdif-card.: rk-hdmi-spdif-hifi <-> ff880000.rockchip-spdif mapping ok
[ 2.453062] carroll : tcp_fastopen_init
[ 2.453091] carroll : ip_auto_config
[ 2.453108] carroll : clk_disable_unused
[ 2.453418] usbcore: registered new interface driver snd-usb-audio
[ 2.453426] ALSA device list:
[ 2.453430] #: RK_ES8323
[ 2.453435] #: RK-SPDIF-CARD

分析原因屏蔽掉的源码为添加emmc设备,屏蔽后添加失败,文件系统初始化不成功

[    1.650105] ..dw_mci_set_ios:  no card. [mmc1]
[ 1.662562] mmc0: BKOPS_EN bit is not set
[ 1.664435] rk_sdmmc: BOOT Bus speed=0Hz,Bus width=8bits.[mmc0]
[ 1.666717] mmc_host mmc0: Bus speed (slot ) = 100000000Hz (slot req 100000000Hz, actual 100000000HZ div = )
[ 1.666742] rk_sdmmc: BOOT dw_mci_setup_bus: argue clk_mmc workaround out normal clock [mmc0]
[ 1.666764] [mmc0] tuning regsbase addr 0x218.
[ 1.667453] [mmc0] Data transmission error !!!! MINTSTS: [0x00000088]
[ 1.667464] [mmc0] host was already tuning, Don't need to retry tune again ignore 0.
[ 1.667492] dwmmc_rockchip ff0f0000.rksdmmc: Tuning error: cmd.error:, data.error:-
[ 1.667518] [mmc0] Data transmission error !!!! MINTSTS: [0x00000088]
[ 1.667527] [mmc0] host was already tuning, Don't need to retry tune again ignore 0.
[ 1.667554] dwmmc_rockchip ff0f0000.rksdmmc: Tuning error: cmd.error:-, data.error:-
[ 1.667580] [mmc0] Data transmission error !!!! MINTSTS: [0x00000088]
[ 1.667589] [mmc0] host was already tuning, Don't need to retry tune again ignore 0.
[ 1.667615] dwmmc_rockchip ff0f0000.rksdmmc: Tuning error: cmd.error:-, data.error:-
[ 1.667640] [mmc0] Data transmission error !!!! MINTSTS: [0x00000088]
[ 1.667649] [mmc0] host was already tuning, Don't need to retry tune again ignore 0.
[ 1.667676] dwmmc_rockchip ff0f0000.rksdmmc: Tuning error: cmd.error:, data.error:-
[ 1.667722] dwmmc_rockchip ff0f0000.rksdmmc: Good phase range - ( len)
[ 1.667733] dwmmc_rockchip ff0f0000.rksdmmc: Good phase range - ( len)
[ 1.667744] dwmmc_rockchip ff0f0000.rksdmmc: Best phase range - ( len)
[ 1.667754] dwmmc_rockchip ff0f0000.rksdmmc: Successfully tuned phase to
[ 1.667796] mmc0: new HS200 MMC card at address
[ 1.668069] mmcblk0: mmc0: AJNB4R 14.5 GiB
[ 1.668202] mmcblk0rpmb: mmc0: AJNB4R partition 4.00 MiB
[ 1.668519] uboot: 0x000400000 -- 0x000800000 ( MB)
[ 1.668530] misc: 0x000800000 -- 0x000c00000 ( MB)
[ 1.668539] resource: 0x000c00000 -- 0x001c00000 ( MB)
[ 1.668548] kernel: 0x001c00000 -- 0x002c00000 ( MB)
[ 1.668557] boot: 0x002c00000 -- 0x004c00000 ( MB)
[ 1.668566] recovery: 0x004c00000 -- 0x006c00000 ( MB)
[ 1.668574] backup: 0x006c00000 -- 0x00a000000 ( MB)
[ 1.668583] cache: 0x00a000000 -- 0x012000000 ( MB)
[ 1.668591] kpanic: 0x012000000 -- 0x012400000 ( MB)
[ 1.668599] system: 0x012400000 -- 0x072400000 ( MB)
[ 1.668608] metadata: 0x072400000 -- 0x073400000 ( MB)
[ 1.668616] baseparamer: 0x073400000 -- 0x073800000 ( MB)
[ 1.668625] userdata: 0x077800000 -- 0x3a3a00000 ( MB)
[ 1.668653] mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13[ 1.669832] dwmmc_rockchip ff0c0000.rksdmmc: DW MMC controller ao
[ 1.669848] dwmmc_rockchip ff0c0000.rksdmmc: slots initialized
[ 1.670158] dw cru_regsbase addr 0x1d8.
[ 1.670168] dw cru_reset_offset val .
[ 1.670179] dwmmc_rockchip ff0d0000.rksdmmc: Version ID is 270a
[ 1.670218] dwmmc_rockchip ff0d0000.rksdmmc: failed to get hpclk_mmc
[ 1.670473] dwmmc_rockchip ff0d0000.rksdmmc: Using internal DMA controller.
[ 1.670605] dw_mci_init_slot: fmin=, fmax= [mmc2]
[ 1.670851] ..dw_mci_set_ios: no card. [mmc2]
------------------------------------------------------------------------------------------
[ 1.670945] carroll : mmc_blk_probe mmc_blk_emmc_add
------------------------------------------------------------------------------------------
[ 1.670992] ..dw_mci_set_ios: no card. [mmc1]
[ 1.689476] ..dw_mci_set_ios: no card. [mmc2]
[ 1.709161] ..dw_mci_set_ios: no card. [mmc2]
[ 1.709185] dwmmc_rockchip ff0d0000.rksdmmc: DW MMC controller at irq , bit host data width, deep fifo
[ 1.709198] dwmmc_rockchip ff0d0000.rksdmmc: slots initialized

说明这里不能删除只能做修改兼容其他批次cpu

再次把问题锁定文件,下边几个文件好像是天启android5.1特供的,就是这个东西让内核挂掉的,天启android4.4以及荣品都能正常开机,并且源码中也无下属文件
firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.o文件
firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd
firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtdrm.mod.c
firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/.virtdrm.o.cmd

天启2017年07-21添加kernel->driver:fix queue file,才添加的这几个文件
https://bitbucket.org/T-Firefly/firenow-lollipop/commits/bd3833f7c215b3f907464866510412ae505d2e73

最终将问题锁定在编译产生的二进制文件firefly-rk3288_android5.1_git_20180126/kernel/drivers/char/virtd

下节尝试逆向分析

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