[PATCH] TI: include: env: ti_common: move fdtoverlay_addr_r to fix ramdisk size

[Judith Mendez]

From: Mattijs Korpershoek <mkorpershoek at baylibre.com>

When booting Android with adtbo_idx set, we observe the
following crash:

   ** Booting bootflow 'mmc at fa10000.bootdev.whole' with android
   ## Booting Android Image at 0x82000000 ...
   Kernel load addr 0x92000000 size 20195 KiB
   Kernel extra command line: console=ttyS2,115200 cma=768M 8250.
	nr_uarts=10 printk.devkmsg=on init=/init quiet firmware_class.
	path=/vendor/firmware mem_sleep_default=deep bootconfig
   RAM disk load addr 0x88080000 size 16901 KiB
   "Synchronous Abort" handler, esr 0x96000005, far 0x155b104c8
   elr: 0000000080808560 lr : 0000000080808558 (reloc)
   elr: 00000000ffebf560 lr : 00000000ffebf558
   x0 : 00000000fff99000 x1 : 00000000fff9553c
   x2 : 000000000000000a x3 : 0000000002800000
   x4 : 0000000002800000 x5 : 0000000000000020

This happens because the memory at fdtoverlay_addr_r is bogus.
In fact:

=> printenv fdtoverlay_addr_r
fdtoverlay_addr_r=0x89000000

And the ramdisk address range is:
[0x88080000; 0x88080000 + 16901 KiB]

Which is equal to:
[0x88080000; 0x89101400]

So, if we represent the addresses:
fdtaddr             0x88000000
ramdisk             0x88080000
fdtoverlay_addr_r   0x89000000
ramisk (end)        0x89101400

We see that fdtoverlay_addr_r in fact has been overridden by
the Android ramdisk.

The maximum ramdisk size is 0x1080000 (15,5 MiB) and a compressed
Android vendor ramdisk is 15MiB:
$ file vendor_ramdisk.img
vendor_ramdisk.img: LZ4 compressed data (v0.1-v0.9)
$ du -sh vendor_ramdisk.img
15M     vendor_ramdisk.img

When it gets decompressed, it uses 16.5MiB, exceeding the
maximum ramdisk size.

Increase the maximum ramdisk size to 20.5MiB by moving
fdtoverlay_addr_r higher up in the address space to fix the crash.

Signed-off-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
Signed-off-by: Judith Mendez <jm at ti.com>
---
 include/env/ti/ti_common.env | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/env/ti/ti_common.env b/include/env/ti/ti_common.env
index 7029d12bf20..a15af79d9c3 100644
--- a/include/env/ti/ti_common.env
+++ b/include/env/ti/ti_common.env
@@ -3,7 +3,7 @@ kernel_addr_r=0x82000000
 fdtaddr=0x88000000
 dtboaddr=0x89000000
 fdt_addr_r=0x88000000
-fdtoverlay_addr_r=0x89000000
+fdtoverlay_addr_r=0x89500000
 rdaddr=0x88080000
 ramdisk_addr_r=0x88080000
 scriptaddr=0x80000000

base-commit: a404065479be2c1fe1167c3c91367e8194a69d1b
-- 
2.46.2