RPi4 vs. use of /usr/local/share/u-boot/u-boot-rpi-arm64/u-boot.bin : RPi4 boot crashes in my context; only 1st RAM page is reserved

[Mark Millard]

Based on using /usr/local/share/u-boot/u-boot-rpi-arm64/u-boot.bin
and the bdinfo u-boot command, note the reserved.reg[0x0].size value
and .base value for the RPi4 8 GiByte example that I tested with:

lmb_dump_all:
    memory.cnt             = 0x3
    memory.size            = 0x0
    memory.reg[0x0].base   = 0x0
                   .size   = 0x3e000000
    memory.reg[0x1].base   = 0x40000000
                   .size   = 0xbc000000
    memory.reg[0x2].base   = 0x100000000
                   .size   = 0x100000000

    reserved.cnt           = 0x2
    reserved.size          = 0x0
    reserved.reg[0x0].base = 0x0
                     .size = 0x1000
    reserved.reg[0x1].base = 0x3db4bb30
                     .size = 0x4b44d0


Only 1 page at the beginning of RAM is protected from accidental
use by u-boot. This is the same general type of problem that
u-boot-rpi4 used to have with not handling armstub8-gic.bin 's
memory use requirements: more than one page needs to be
protected.

That might be contributing to the boot attempts ending up with
Synchronous Abort:

PM_RSTS: 0x00001000
RPi: BOOTLOADER release VERSION:c305221a DATE: Sep  3 2020 TIME: 13:11:46 BOOTMODE: 0x00000006 part: 0 BUILD_TIMESTAMP=1599135103 0x2e7284c8 0x00d03114
uSD voltage 3.3V
Initialising SDRAM 'Micron' 32Gb x2 total-size: 64 Gbit 3200
. . .
MESS:00:00:07.718966:0: gpioman: gpioman_get_pin_num: pin SDCARD_CONTROL_POWER not defined


U-Boot 2020.10 (Dec 15 2020 - 20:55:53 +0000)

DRAM:  7.9 GiB
RPI 4 Model B (0xd03114)
MMC:   mmc at 7e300000: 1, emmc2 at 7e340000: 0
Loading Environment from FAT... In:    serial
Out:   vidconsole
Err:   vidconsole
Net:   eth0: ethernet at 7d580000
PCIe BRCM: link up, 5.0 Gbps x1 (SSC)
starting USB...
Bus xhci_pci: probe failed, error -110
No working controllers found
Hit any key to stop autoboot:  0 
"Synchronous Abort" handler, esr 0x96000004
elr: 000000000009c0c8 lr : 0000000000092194 (reloc)
elr: 000000003df790c8 lr : 000000003df6f194
x0 : d519b040aa010000 x1 : 000000000000005c
x2 : 0000000000800000 x3 : 000000003dfd3670
x4 : b900080152b00000 x5 : 000000000000005c
x6 : 000000003dfd3670 x7 : b900080152afff90
x8 : 0000000000000000 x9 : 0000000000000008
x10: 00000000ffffffd0 x11: 0000000000000006
x12: 000000000001869f x13: 000000000000add8
x14: 000000003db4ce38 x15: 0000000000000002
x16: 0000000000004110 x17: 5497100900024000
x18: 000000003db58d90 x19: 000000003dfd30b0
x20: 0000000000000070 x21: 000000000000006d
x22: 000000000000000a x23: 0000000000000005
x24: 000000003dfbf8ef x25: 000000003dfc7ad6
x26: 0000000000000000 x27: 000000000000006d
x28: 000000003dfe4e94 x29: 000000003db4c100

Code: eb03005f 54ffff43 f9400ca4 17ffffe0 (f9400404) 
Resetting CPU ...

resetting ...


Context details (booted using a variant of u-boot-rpi4 that
also respects armstub_rsrvd):

# uname -apKU
FreeBSD RPi4B 13.0-CURRENT FreeBSD 13.0-CURRENT #47 r368500M: Thu Dec 10 03:15:10 PST 2020     root at FBSDFHUGE:/usr/obj/cortexA72_clang/arm64.aarch64/usr/src/arm64.aarch64/sys/GENERIC-NODBG  arm64 aarch64 1300131 1300131

# svnlite info /usr/ports/
Path: /usr/ports
Working Copy Root Path: /usr/ports
URL: svn://svn.freebsd.org/ports/head
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 558163
Node Kind: directory
Schedule: normal
Last Changed Author: manu
Last Changed Rev: 558163
Last Changed Date: 2020-12-15 07:07:07 -0800 (Tue, 15 Dec 2020)

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)