OKAY I taught myself a lot of crap and hit a few dead ends but here is the Part 1 of the terminal output from the 7300 booting the OEM firmware. It's divided in half because I reached some limit on the forum.
0
#### auto_recovery ####
check env def auto_recovery no
check env def auto_recovery yes
check env def boot_part 1
check env def boot_part_ready 3
enabled:1, boot_part:1, boot_part_ready:3
..nand read ret = 0x20000
boot_count:0, next_record:25
boot_count:0, next_record:25
3: System Boot system code via Flash.
## Booting image at bc180000 ...
Image Name: Linksys EA7300 Router
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 2359293 Bytes = 2.2 MB
Load Address: 80001000
Entry Point: 8000d1d0
.................................... Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 8000d1d0) ...
## Giving linux memsize in MB, 256
Starting kernel ...
LINUX started...
THIS IS ASIC
SDK 5.0.S.0
Initializing cgroup subsys cpu
Linux version 2.6.36 (root@build-vm) (gcc version 4.6.3 (Buildroot 2012.11.1) ) #81 SMP Fri Oct 21 05:34:59 PDT 2016
The CPU feqenuce set to 880 MHz
GCMP present
CPU revision is: 0001992f (MIPS 1004Kc)
Software DMA cache coherency
Determined physical RAM map:
memory: 10000000 @ 00000000 (usable)
Zone PFN ranges:
DMA 0x00000000 -> 0x0000c000
Normal 0x0000c000 -> 0x00010000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
0: 0x00000000 -> 0x00010000
Detected 3 available secondary CPU(s)
PERCPU: Embedded 7 pages/cpu @8c204000 s6720 r8192 d13760 u65536
pcpu-alloc: s6720 r8192 d13760 u65536 alloc=16*4096
pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
Kernel command line: console=ttyS1,115200n8 root=/dev/mtdblock6 ro rootfstype=jffs2 init=/sbin/init
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Primary instruction cache 32kB, VIPT, , 4-waylinesize 32 bytes.
Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
Writing ErrCtl register=00000404
Readback ErrCtl register=00000404
allocated 1310720 bytes of page_cgroup
please try 'cgroup_disable=memory' option if you don't want memory cgroups
Memory: 251300k/262144k available (5015k kernel code, 10844k reserved, 1578k data, 228k init, 0k highmem)
Hierarchical RCU implementation.
Verbose stalled-CPUs detection is disabled.
NR_IRQS:128
Trying to install interrupt handler for IRQ24
Trying to install interrupt handler for IRQ25
Trying to install interrupt handler for IRQ22
Trying to install interrupt handler for IRQ9
Trying to install interrupt handler for IRQ10
Trying to install interrupt handler for IRQ11
Trying to install interrupt handler for IRQ12
Trying to install interrupt handler for IRQ13
Trying to install interrupt handler for IRQ14
Trying to install interrupt handler for IRQ16
Trying to install interrupt handler for IRQ17
Trying to install interrupt handler for IRQ18
Trying to install interrupt handler for IRQ19
Trying to install interrupt handler for IRQ20
Trying to install interrupt handler for IRQ21
Trying to install interrupt handler for IRQ23
Trying to install interrupt handler for IRQ26
Trying to install interrupt handler for IRQ27
Trying to install interrupt handler for IRQ28
Trying to install interrupt handler for IRQ15
Trying to install interrupt handler for IRQ8
Trying to install interrupt handler for IRQ29
Trying to install interrupt handler for IRQ30
Trying to install interrupt handler for IRQ31
console [ttyS1] enabled
Calibrating delay loop... 561.15 BogoMIPS (lpj=1122304)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Initializing cgroup subsys memory
launch: starting cpu1
launch: cpu1 gone!
CPU revision is: 0001992f (MIPS 1004Kc)
Primary instruction cache 32kB, VIPT, , 4-waylinesize 32 bytes.
Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
launch: starting cpu2
launch: cpu2 gone!
CPU revision is: 0001992f (MIPS 1004Kc)
Primary instruction cache 32kB, VIPT, , 4-waylinesize 32 bytes.
Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
launch: starting cpu3
launch: cpu3 gone!
CPU revision is: 0001992f (MIPS 1004Kc)
Primary instruction cache 32kB, VIPT, , 4-waylinesize 32 bytes.
Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
Brought up 4 CPUs
Synchronize counters across 4 CPUs: done.
devtmpfs: initialized
NET: Registered protocol family 16
release PCIe RST: RALINK_RSTCTRL = 7000000
PCIE PHY initialize
***** Xtal 40MHz *****
start MT7621 PCIe register access
RALINK_RSTCTRL = 7000000
RALINK_CLKCFG1 = 77ffeff8
*************** MT7621 PCIe RC mode *************
PCIE2 no card, disable it(RST&CLK)
pcie_link status = 0x3
RALINK_RSTCTRL= 3000000
*** Configure Device number setting of Virtual PCI-PCI bridge ***
RALINK_PCI_PCICFG_ADDR = 21007f2 -> 21007f2
PCIE0 enabled
PCIE1 enabled
interrupt enable status: 300000
Port 1 N_FTS = 1b105000
Port 0 N_FTS = 1b105000
config reg done
init_rt2880pci done
bio: create slab <bio-0> at 0
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
pci 0000:00:00.0: BAR 0: can't assign mem (size 0x80000000)
pci 0000:00:01.0: BAR 0: can't assign mem (size 0x80000000)
pci 0000:00:00.0: BAR 8: assigned [mem 0x60000000-0x600fffff]
pci 0000:00:01.0: BAR 8: assigned [mem 0x60100000-0x601fffff]
pci 0000:00:00.0: BAR 1: assigned [mem 0x60200000-0x6020ffff]
pci 0000:00:00.0: BAR 1: set to [mem 0x60200000-0x6020ffff] (PCI address [0x60200000-0x6020ffff]
pci 0000:00:01.0: BAR 1: assigned [mem 0x60210000-0x6021ffff]
pci 0000:00:01.0: BAR 1: set to [mem 0x60210000-0x6021ffff] (PCI address [0x60210000-0x6021ffff]
pci 0000:01:00.0: BAR 0: assigned [mem 0x60000000-0x600fffff 64bit]
pci 0000:01:00.0: BAR 0: set to [mem 0x60000000-0x600fffff 64bit] (PCI address [0x60000000-0x600fffff]
pci 0000:00:00.0: PCI bridge to [bus 01-01]
pci 0000:00:00.0: bridge window [io disabled]
pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff]
pci 0000:00:00.0: bridge window [mem pref disabled]
pci 0000:02:00.0: BAR 0: assigned [mem 0x60100000-0x601fffff 64bit]
pci 0000:02:00.0: BAR 0: set to [mem 0x60100000-0x601fffff 64bit] (PCI address [0x60100000-0x601fffff]
pci 0000:00:01.0: PCI bridge to [bus 02-02]
pci 0000:00:01.0: bridge window [io disabled]
pci 0000:00:01.0: bridge window [mem 0x60100000-0x601fffff]
pci 0000:00:01.0: bridge window [mem pref disabled]
PCI: Enabling device 0000:00:00.0 (0004 -> 0006)
PCI: Enabling device 0000:00:01.0 (0004 -> 0006)
BAR0 at slot 0 = 0
bus=0x0, slot = 0x0
res[0]->start = 0
res[0]->end = 0
res[1]->start = 60200000
res[1]->end = 6020ffff
res[2]->start = 0
res[2]->end = 0
res[3]->start = 0
res[3]->end = 0
res[4]->start = 0
res[4]->end = 0
res[5]->start = 0
res[5]->end = 0
BAR0 at slot 1 = 0
bus=0x0, slot = 0x1
res[0]->start = 0
res[0]->end = 0
res[1]->start = 60210000
res[1]->end = 6021ffff
res[2]->start = 0
res[2]->end = 0
res[3]->start = 0
res[3]->end = 0
res[4]->start = 0
res[4]->end = 0
res[5]->start = 0
res[5]->end = 0
bus=0x1, slot = 0x0, irq=0x4
res[0]->start = 60000000
res[0]->end = 600fffff
res[1]->start = 0
res[1]->end = 0
res[2]->start = 0
res[2]->end = 0
res[3]->start = 0
res[3]->end = 0
res[4]->start = 0
res[4]->end = 0
res[5]->start = 0
res[5]->end = 0
bus=0x2, slot = 0x1, irq=0x18
res[0]->start = 60100000
res[0]->end = 601fffff
res[1]->start = 0
res[1]->end = 0
res[2]->start = 0
res[2]->end = 0
res[3]->start = 0
res[3]->end = 0
res[4]->start = 0
res[4]->end = 0
res[5]->start = 0
res[5]->end = 0
Switching to clocksource Ralink Systick timer
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
UDP hash table entries: 128 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
4 CPUs re-calibrate udelay(lpj = 1167360)
Load Kernel WDG Timer Module
squashfs: version 4.0 (2009/01/31) Phillip Lougher
JFFS2 version 2.2 (NAND) (ZLIB) (LZO) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
fuse init (API version 7.15)
msgmni has been set to 490
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered (default)
register power led blinking slow.
register wps led off.
Ralink gpio driver initialized
Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
serial8250: ttyS0 at MMIO 0x1e000d00 (irq = 27) is a 16550A
serial8250: ttyS1 at MMIO 0x1e000c00 (irq = 26) is a 16550A
brd: module loaded
loop: module loaded
MediaTek Nand driver init, version v2.1 Fix AHB virt2phys error
Allocate 16 byte aligned buffer: 806e1060
Enable NFI Clock
# MTK NAND # : Use HW ECC
NAND ID [C2 F1 80 95 02, 00809502]
Device not found, ID: c2f1
Not Support this Device!
chip_mode=00000001
Support this Device in MTK table! c2f1
NAND device: Manufacturer ID: 0xc2, Chip ID: 0xf1 (Unknown NAND 128MiB 3,3V 8-bit)
[NAND]select ecc bit:4, sparesize :64 spare_per_sector=16
Scanning device for bad blocks
Bad eraseblock 837 at 0x0000068a0000
Signature matched and data read!
load_fact_bbt success 1023
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0c 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Creating 12 MTD partitions on "MT7621-NAND":
0x000000000000-0x000007f80000 : "ALL"
0x000000000000-0x000000080000 : "boot"
0x000000080000-0x0000000c0000 : "u_env"
0x0000000c0000-0x000000100000 : "Factory"
0x000000100000-0x000000140000 : "s_env"
0x000000140000-0x000000180000 : "devinfo"
0x000000180000-0x000002980000 : "kernel"
0x000000580000-0x000002980000 : "rootfs"
0x000002980000-0x000005180000 : "alt_kernel"
0x000002d80000-0x000005180000 : "alt_rootfs"
0x000005180000-0x000005280000 : "sysdiag"
0x000005280000-0x000007f80000 : "syscfg"
[mtk_nand] probe successfully!
rdm_major = 253
GMAC1_MAC_ADRH -- : 0x0000000c
GMAC1_MAC_ADRL -- : 0x432880ff
Ralink APSoC Ethernet Driver Initilization. v3.1 1024 rx/tx descriptors allocated, mtu = 1500!
GMAC1_MAC_ADRH -- : 0x0000000c
GMAC1_MAC_ADRL -- : 0x432880f3
PROC INIT OK!
Customize GPIO mode.change I2C & JTAG to GPIO mode.
org gpio_mode: 000a05a8
update gpio_mode: 000a05ac
new gpio_mode: 000a05ac
Check Eth LED.
PPP generic driver version 2.4.2
PPP MPPE Compression module registered
NET: Registered protocol family 24
PPTP driver version 0.8.5
SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
FM_OUT value: u4FmOut = 0(0x00000000)
xhc_mtk xhc_mtk: xHCI Host Controller
xhc_mtk xhc_mtk: new USB bus registered, assigned bus number 1
xhc_mtk xhc_mtk: irq 22, io mem 0x1e1c0000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
xhc_mtk xhc_mtk: xHCI Host Controller
xhc_mtk xhc_mtk: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
mt_msdc_init: !!!!! SDXC Module Initialize Fail !!!!!
u32 classifier
Actions configured
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (3926 buckets, 15704 max)
ctnetlink v0.93: registering with nfnetlink.
nf_conntrack_rtsp v0.6.21 loading
IPVS: Registered protocols ()
IPVS: Connection hash table configured (size=4096, memory=32Kbytes)
IPVS: ipvs loaded.
IPv4 over IPv4 tunneling driver
GRE over IPv4 demultiplexor driver
gre: can't add protocol
nf_nat_rtsp v0.6.21 loading
ip_tables: (C) 2000-2006 Netfilter Core Team, Type=Linux
TCP cubic registered
NET: Registered protocol family 10
ip6_tables: (C) 2000-2006 Netfilter Core Team
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Bridge firewalling registered
Ebtables v2.0 registered
L2TP core driver, V2.0
PPPoL2TP kernel driver, V2.0
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
Registering the dns_resolver key type