I am able to boot with initramfs with lzma compression.

i have 20 block of 4MB /ramdisk allocation and size of compressed fs is 14MB and of uncompress is 70 MB

env:

arch=arm
baudrate=115200
board=dra7xx
board_name=dra7xx
boot_fdt=try
boot_os=0
bootargs=androidboot.serialno=${serial#}
bootargs_base=setenv bootargs console=${console} stdin=${stdin} stdout=${stdout} stderr=${stderr} ro enable_wait_mode=off earlyprintk
bootargs_initramfs=run bootargs_base; setenv bootargs ${bootargs} rdinit=/sbin/init noinitrd
bootcmd=run bootcmd_cf_nor
bootcmd_cf_nor=run bootargs_initramfs uimage_load_nor initramfs_load_nor;bootm ${loadaddr} ${loadaddr_initramfs} ${fdt_addr}
bootdelay=2
bootdir=/boot
bootfile=zImage
bootm_size=0x10000000
bootpart=0:2
console=ttyO2,115200n8
cpu=armv7
dofastboot=0
ethaddr=04:79:b7:90:e0:a8
fdt_addr=0x88000000
fdt_addr_r=0x88000000
fdt_high=0xffffffff
fdt_offset=0x08180000
fdt_size=0x8000
fdtaddr=0x88000000
fdtcontroladdr=beee3598
fdtfile=undefined
findfdt=if test $board_name = dra7xx; then setenv fdtfile dra7-evm.dtb; fi;if test $board_name = dra76x; then setenv fdtfile dra76-evm.dtb; fi;if test $board_findfdt != undefined; then run board_findfdt; fi;if test $fdtfile = undefined; then echo WARNING: Could not determine device tree to use; fi;
initramfs_copy_cmd=cp
initramfs_load_nor=${initramfs_copy_cmd} ${initramfs_offset} ${loadaddr_initramfs} ${initramfs_size}
initramfs_offset=0x086C0000
initramfs_size=0x00A00000
initrd_high=0xffffffff
kernel_addr_r=0x82000000
loadaddr=0x82000000
loadaddr_initramfs=0x88080000
netargs=setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=dhcp
netboot=echo Booting from network ...; setenv autoload no; dhcp; run netloadimage; run netloadfdt; run netargs; bootz ${loadaddr} - ${fdtaddr}
netloadfdt=tftp ${fdtaddr} ${fdtfile}
netloadimage=tftp ${loadaddr} ${bootfile}
nfsopts=nolock
pxefile_addr_r=0x80100000
ramdisk_addr_r=0x88080000
rdaddr=0x88080000
reboot_image=boot
rootpath=/export/rootfs
scriptaddr=0x80000000
soc=omap5
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
stderr=serial@48020000
stdin=serial@48020000
stdout=serial@48020000
uimage_copy_cmd=cp
uimage_load_nor=${uimage_copy_cmd} ${fdt_offset} ${fdt_addr} ${fdt_size} && ${uimage_copy_cmd} ${uimage_offset} ${loadaddr} ${uimage_size}
uimage_offset=0x081C0000
uimage_size=0x100000
usbtty=cdc_acm
vendor=ti
ver=U-Boot 2016.05-00064-gc7cf5219c4ca (Jun 28 2019 - 17:42:48 -0400)
vram=16M

LOG:

U-Boot 2016.05-00064-gc7cf5219c4ca (Jun 28 2019 - 17:42:48 -0400)

CPU : DRA762-GP ES1.0
Model: TI DRA742
Board: AVPIM Proto Mar 2019 REV 01
DRAM: Flash: ## Unknown flash on Bank 1 - Size = 0x00000000 = 0 MB
0 Bytes
*** Warning - bad CRC, using default environment

Net: Could not get PHY for ethernet@48484000: addr 2

Warning: ethernet@48484000 using MAC address from ROM
eth0: ethernet@48484000
Hit any key to stop autoboot: 0
## Booting kernel from Legacy Image at 82000000 ...
Image Name: Linux uImage
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3472704 Bytes = 3.3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 88080000 ...
Image Name: Ramdisk Image
Image Type: ARM Linux RAMDisk Image (lzma compressed)
Data Size: 14662886 Bytes = 14 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Kernel Image ... OK
Using Device Tree in place at 88000000, end 8801c9ac

Starting kernel ...

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.84-00052-ga2ee5f975a0b-dirty (root@ubuntu-b3f523dc-be13-4dcc-9b90-711edd516ef9) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #20 PREEMPT Tue Aug 20 20:31:32 EDT 2019
[ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=30c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[ 0.000000] Machine model: TI DRA762 EVM
[ 0.000000] bootconsole [earlycon0] enabled
[ 0.000000] Reserved memory: created DMA memory pool at 0x0000000040300000, size 3 MiB
[ 0.000000] Reserved memory: initialized node cmem@40300000, compatible id shared-dma-pool
[ 0.000000] Reserved memory: regions without no-map are not yet supported
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000099000000, size 80 MiB
[ 0.000000] Reserved memory: initialized node ipu2_cma@95800000, compatible id shared-dma-pool
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000009e000000, size 32 MiB
[ 0.000000] Reserved memory: initialized node ipu1_cma@9d000000, compatible id shared-dma-pool
[ 0.000000] cma: Reserved 24 MiB at 0x0000000095800000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] OMAP4: Map 0x000000009fd00000 to fe600000 for dram barrier
[ 0.000000] Hit pending asynchronous external abort (FSR=0x00000211) during first unmask, this is most likely caused by a firmware/bootloader bug.
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at arch/arm/kernel/devtree.c:157 arm_dt_init_cpu_maps+0x140/0x180()
[ 0.000000] DT /cpu 2 nodes greater than max cores 1, capping them
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.84-00052-ga2ee5f975a0b-dirty #20
[ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 0.000000] Backtrace:
[ 0.000000] [<c0013330>] (dump_backtrace) from [<c001352c>] (show_stack+0x18/0x1c)
[ 0.000000] r7:c08e9a2c r6:0000009d r5:00000009 r4:00000000
[ 0.000000] [<c0013514>] (show_stack) from [<c02aeecc>] (dump_stack+0x24/0x28)
[ 0.000000] [<c02aeea8>] (dump_stack) from [<c0037324>] (warn_slowpath_common+0x88/0xb4)
[ 0.000000] [<c003729c>] (warn_slowpath_common) from [<c0037388>] (warn_slowpath_fmt+0x38/0x40)
[ 0.000000] r8:00000001 r7:c0827a68 r6:c081edb0 r5:00000000 r4:c081ee48
[ 0.000000] [<c0037354>] (warn_slowpath_fmt) from [<c08e9a2c>] (arm_dt_init_cpu_maps+0x140/0x180)
[ 0.000000] r3:00000002 r2:c081ee48
[ 0.000000] r4:d52d2ecc
[ 0.000000] [<c08e98ec>] (arm_dt_init_cpu_maps) from [<c08e8fb0>] (setup_arch+0x1a0/0x208)
[ 0.000000] r9:412fc0f2 r8:80007000 r7:c0936874 r6:c0920a18 r5:c093204c r4:c097f140
[ 0.000000] [<c08e8e10>] (setup_arch) from [<c08e2494>] (start_kernel+0x60/0x558)
[ 0.000000] [<c08e2434>] (start_kernel) from [<8000808c>] (0x8000808c)
[ 0.000000] ---[ end trace cb88537fdc8fa200 ]---
[ 0.000000] CPU: All CPU(s) started in HYP mode.
[ 0.000000] CPU: Virtualization extensions available.
[ 0.000000] DRA762 ES1.0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129152
[ 0.000000] Kernel command line: console=ttyO2,115200n8 stdin=serial@48020000 stdout=serial@48020000 stderr=serial@48020000 ro enable_wait_mode=off earlyprintk rdinit=/sbin/init noinitrd
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 322104K/521216K available (6691K kernel code, 311K rwdata, 2368K rodata, 312K init, 270K bss, 59848K reserved, 139264K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc08e100c (9061 kB)
[ 0.000000] .init : 0xc08e2000 - 0xc0930000 ( 312 kB)
[ 0.000000] .data : 0xc0930000 - 0xc097dcf8 ( 312 kB)
[ 0.000000] .bss : 0xc097f000 - 0xc09c2b58 ( 271 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 32.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] ti_dt_clocks_register: failed to lookup clock node gmac_gmii_ref_clk_div
[ 0.000000] OMAP clockevent source: timer1 at 32786 Hz
[ 0.000000] Architected cp15 timer(s) running at 6.14MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x16af5adb9, max_idle_ns: 440795202250 ns
[ 0.000004] sched_clock: 56 bits at 6MHz, resolution 162ns, wraps every 4398046511023ns
[ 0.008303] Switching to timer-based delay loop, resolution 162ns
[ 0.014948] clocksource: 32k_counter: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 58327039986419 ns
[ 0.025208] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.030914] Console: colour dummy device 80x30
[ 0.035564] WARNING: Your 'console=ttyO2' has been replaced by 'ttyS2'
[ 0.042352] This ensures that you still see kernel messages. Please
[ 0.048861] update your kernel commandline.
[ 0.053242] Calibrating delay loop (skipped), value calculated using timer frequency.. 12.29 BogoMIPS (lpj=61475)
[ 0.063862] pid_max: default: 32768 minimum: 301
[ 0.068740] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.075619] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.083350] Initializing cgroup subsys io
[ 0.087561] Initializing cgroup subsys memory
[ 0.092128] Initializing cgroup subsys devices
[ 0.096773] Initializing cgroup subsys freezer
[ 0.101422] Initializing cgroup subsys perf_event
[ 0.106332] Initializing cgroup subsys pids
[ 0.110716] CPU: Testing write buffer coherency: ok
[ 0.115960] Setting up static identity map for 0x80008300 - 0x80008360
[ 0.123363] devtmpfs: initialized
[ 0.150236] VFP support v0.3: implementor 41 architecture 4 part 30 variant f rev 0
[ 0.158806] omap_hwmod: l3_main_2 using broken dt data from ocp
[ 0.318317] omap_hwmod: timer13: _wait_target_ready failed: -16
[ 0.324478] omap_hwmod: timer13: cannot be enabled for reset (3)
[ 0.333300] omap_hwmod: timer14: _wait_target_ready failed: -16
[ 0.339459] omap_hwmod: timer14: cannot be enabled for reset (3)
[ 0.348282] omap_hwmod: timer15: _wait_target_ready failed: -16
[ 0.354440] omap_hwmod: timer15: cannot be enabled for reset (3)
[ 0.363265] omap_hwmod: timer16: _wait_target_ready failed: -16
[ 0.369418] omap_hwmod: timer16: cannot be enabled for reset (3)
[ 0.376217] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.386412] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.396144] ------------[ cut here ]------------
[ 0.401010] WARNING: CPU: 0 PID: 1 at mm/cma.c:117 cma_init_reserved_areas+0x13c/0x21c()
[ 0.409391] Modules linked in:
[ 0.412617] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.4.84-00052-ga2ee5f975a0b-dirty #20
[ 0.422252] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 0.428590] Backtrace:
[ 0.431190] [<c0013330>] (dump_backtrace) from [<c001352c>] (show_stack+0x18/0x1c)
[ 0.439043] r7:c08fe2d4 r6:00000075 r5:00000009 r4:00000000
[ 0.444949] [<c0013514>] (show_stack) from [<c02aeecc>] (dump_stack+0x24/0x28)
[ 0.452455] [<c02aeea8>] (dump_stack) from [<c0037324>] (warn_slowpath_common+0x88/0xb4)
[ 0.460847] [<c003729c>] (warn_slowpath_common) from [<c00373f4>] (warn_slowpath_null+0x24/0x2c)
[ 0.469942] r8:024080c0 r7:c097b498 r6:0009fd00 r5:c082e37c r4:0009fc00
[ 0.476918] [<c00373d0>] (warn_slowpath_null) from [<c08fe2d4>] (cma_init_reserved_areas+0x13c/0x21c)
[ 0.486476] [<c08fe198>] (cma_init_reserved_areas) from [<c0009884>] (do_one_initcall+0x70/0x198)
[ 0.495660] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c068a598
[ 0.503795] r4:00000000
[ 0.506481] [<c0009814>] (do_one_initcall) from [<c08e359c>] (do_initcall_level+0xe8/0x120)
[ 0.515137] [<c08e34b4>] (do_initcall_level) from [<c08e35f8>] (do_initcalls+0x24/0x48)
[ 0.523430] [<c08e35d4>] (do_initcalls) from [<c08e3648>] (do_basic_setup+0x2c/0x38)
[ 0.531465] [<c08e361c>] (do_basic_setup) from [<c08e398c>] (kernel_init_freeable+0x2dc/0x388)
[ 0.540384] [<c08e36b0>] (kernel_init_freeable) from [<c068a5b0>] (kernel_init+0x18/0x180)
[ 0.548958] [<c068a598>] (kernel_init) from [<c000fc68>] (ret_from_fork+0x14/0x2c)
[ 0.556804] ---[ end trace cb88537fdc8fa201 ]---
[ 0.562542] pinctrl core: initialized pinctrl subsystem
[ 0.568641] NET: Registered protocol family 16
[ 0.574008] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.603332] cpuidle: using governor ladder
[ 0.633345] cpuidle: using governor menu
[ 0.644355] OMAP GPIO hardware version 0.1
[ 0.653603] irq: no irq domain found for /ocp/l4@4a000000/scm@2000/pinmux@1400 !
[ 0.677831] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.686142] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.692632] omap4_sram_init:Unable to allocate sram needed to handle errata I688
[ 0.700318] omap4_sram_init:Unable to get sram pool needed to handle errata I688
[ 0.708331] OMAP DMA hardware revision 0.0
[ 0.751161] omap-dma-engine 4a056000.dma-controller: OMAP DMA engine driver (LinkedList1/2/3 supported)
[ 0.761727] edma 43300000.edma: memcpy is disabled
[ 0.770347] edma 43300000.edma: TI EDMA DMA engine driver
[ 0.779368] omap-iommu 40d01000.mmu: 40d01000.mmu registered
[ 0.785376] omap-iommu 40d02000.mmu: 40d02000.mmu registered
[ 0.791374] omap-iommu 58882000.mmu: 58882000.mmu registered
[ 0.797363] omap-iommu 55082000.mmu: 55082000.mmu registered
[ 0.803439] omap-iommu 41501000.mmu: 41501000.mmu registered
[ 0.809455] omap-iommu 41502000.mmu: 41502000.mmu registered
[ 0.817949] palmas 0-0058: IRQ missing: skipping irq request
[ 0.835643] palmas 0-0058: Muxing GPIO 0, PWM 3, LED 0
[ 0.844651] smps5: failed to get the current voltage(-22)
[ 0.850362] palmas-pmic 48070000.i2c:tps65917@58:tps65917_pmic: failed to register 48070000.i2c:tps65917@58:tps65917_pmic regulator
[ 0.862777] palmas-pmic: probe of 48070000.i2c:tps65917@58:tps65917_pmic failed with error -22
[ 0.871790] irq: no irq domain found for /ocp/i2c@48070000/tps65917@58 !
[ 0.879191] pcf857x: probe of 0-0020 failed with error -121
[ 0.885188] pcf857x: probe of 0-0021 failed with error -121
[ 0.891183] pcf857x: probe of 0-0026 failed with error -121
[ 0.897004] omap_i2c 48070000.i2c: bus 0 rev0.12 at 400 kHz
[ 0.903142] omap_i2c 48060000.i2c: bus 2 rev0.12 at 400 kHz
[ 0.909076] media: Linux media interface: v0.10
[ 0.913857] Linux video capture interface: v2.00
[ 0.918708] pps_core: LinuxPPS API ver. 1 registered
[ 0.923888] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.933360] PTP clock support registered
[ 0.937512] EDAC MC: Ver: 3.0.0
[ 0.941399] omap-mailbox 48840000.mailbox: omap mailbox rev 0x400
[ 0.947995] omap-mailbox 48842000.mailbox: omap mailbox rev 0x400
[ 0.954572] Advanced Linux Sound Architecture Driver Initialized.
[ 0.961571] clocksource: Switched to clocksource arch_sys_counter
[ 0.975174] NET: Registered protocol family 2
[ 0.980121] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.987480] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.994228] TCP: Hash tables configured (established 4096 bind 4096)
[ 1.000858] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 1.006949] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.013554] NET: Registered protocol family 1
[ 1.018271] RPC: Registered named UNIX socket transport module.
[ 1.024454] RPC: Registered udp transport module.
[ 1.029364] RPC: Registered tcp transport module.
[ 1.034279] RPC: Registered tcp NFSv4.1 backchannel transport module.
á compressed dataected
á); looks like an initrdame (
[ 1.050694] before decompress_methodcan you see this data 486line
[ 1.057035] buf addr c092e940
[ 1.060158] buf length 134
[ 1.063037] Compressed data magic: 0x1f 0x8b
[ 1.067499] name of the zipthingy ¨
[ 1.071247] Do we have a name here
[ 1.074916] Detected gzip compressed data
[ 1.079110] 62 is buf set, if so you will see this
[ 1.084122] this is after rc line counter=0 132
[ 1.089117] this is before zlib_inflate line 144
[ 1.094043] this is after zlib_inflate line 146
[ 1.099040] 157 flush is c08e67d0 strm->next_out is d4f50200 out_buf is d4f50000 l is 512
422 len is 512 byte_count is 396 result is 116
[ 1.112540] 422 len is 396 byte_count is 272 result is 124
[ 1.118365] 422 len is 272 byte_count is 156 result is 116
[ 1.124198] 422 len is 156 byte_count is 0 result is 156
[ 1.129819] 446 buf is d4f50164 bufv is d4f50000 origlen is 512 len is 156
[ 1.137071] 164 l = flush(out_buf,l)
[ 1.140816] this is before zlib_inflateEnd line 171
[ 1.146006] this is after zlib_inflateEnd line 171
[ 1.151097] this is rc crap 0
[ 1.154230] this_header 0l
[ 1.157086] right below dir_utime
[ 1.160579] Trying to unpack rootfs image as initramfs...
[ 1.166216] Detected
ÐKâ compressed data
[ 1.170410] compress_name (
ÐKâ); looks like an initrd
[ 1.175772] before decompress_methodcan you see this data 486line
[ 1.182113] buf addr c8080040
[ 1.185237] buf length 14662886
[ 1.188540] Compressed data magic: 0x5d 0x00
[ 1.193009] name of the zipthingy ¨
[ 1.196758] Do we have a name here
[ 1.200416] Detected lzma compressed data