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From: Geoff Levand <geoff@infradead.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Markus Elfring <elfring@users.sourceforge.net>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Emmanuel Nicolet <emmanuel.nicolet@gmail.com>
Subject: [PATCH V2 7/9] powerpc/ps3: Add check for otheros image size
Date: Sun, 29 Mar 2020 20:11:33 -0700
Message-ID: <1bd453f8-fbc0-54d4-2754-7b190a5b954c@infradead.org> (raw)
In-Reply-To: <e0dc92ba82a993c845f8d2bf3ace7465ef5ea996.1585340156.git.geoff@infradead.org>

The ps3's otheros flash loader has a size limit of 16 MiB for the
uncompressed image.  If that limit will be reached output the
flash image file as 'otheros-too-big.bld'.

Signed-off-by: Geoff Levand <geoff@infradead.org>
---
 arch/powerpc/boot/wrapper | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 35ace40d9fc2..ab1e3ddc79f3 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -571,7 +571,20 @@ ps3)
         count=$overlay_size bs=1
 
     odir="$(dirname "$ofile.bin")"
-    rm -f "$odir/otheros.bld"
-    gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"
+
+    # The ps3's flash loader has a size limit of 16 MiB for the uncompressed
+    # image.  If a compressed image that exceeded this limit is written to
+    # flash the loader will decompress that image until the 16 MiB limit is
+    # reached, then enter the system reset vector of the partially decompressed
+    # image.  No warning is issued.
+    rm -f "$odir"/{otheros,otheros-too-big}.bld
+    size=$(${CROSS}nm --no-sort --radix=d "$ofile" | egrep ' _end$' | cut -d' ' -f1)
+    bld="otheros.bld"
+    if [ $size -gt $((0x1000000)) ]; then
+        bld="otheros-too-big.bld"
+        echo "  INFO: Uncompressed kernel is too large to program into PS3 flash memory;" \
+        "size=0x$(printf "%x\n" $size), limit=0x1000000."
+    fi
+    gzip -n --force -9 --stdout "$ofile.bin" > "$odir/$bld"
     ;;
 esac
-- 
2.20.1


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27 20:26 [PATCH 0/9] PS3 patches for v5.7 Geoff Levand
2020-03-27 20:26 ` [PATCH 5/9] ps3disk: use the default segment boundary Geoff Levand
2020-03-27 20:26 ` [PATCH 9/9] powerpc/ps3: Add udbg_panic Geoff Levand
2020-03-27 20:26 ` [PATCH 6/9] powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfig Geoff Levand
2020-04-06 13:05   ` Michael Ellerman
2020-03-27 20:26 ` [PATCH 8/9] powerpc/ps3: Add lv1_panic Geoff Levand
2020-03-27 20:26 ` [PATCH 7/9] powerpc/ps3: Add check for otheros image size Geoff Levand
2020-03-29 14:00   ` Geert Uytterhoeven
2020-03-30  3:10     ` Geoff Levand
2020-03-30  3:11   ` Geoff Levand [this message]
2020-03-27 20:26 ` [PATCH 4/9] powerpc/ps3: remove an unneeded NULL check Geoff Levand
2020-04-06 13:05   ` Michael Ellerman
2020-03-27 20:26 ` [PATCH 1/9] powerpc/ps3: Remove duplicate error messages Geoff Levand
2020-03-28 17:09   ` Markus Elfring
2020-04-06 13:05   ` Michael Ellerman
2020-03-27 20:26 ` [PATCH 3/9] net/ps3_gelic_net: Remove duplicate error message Geoff Levand
2020-03-27 20:26 ` [PATCH 2/9] drivers/ps3: Remove duplicate error messages Geoff Levand
2020-05-09 18:58 [PATCH v2 0/9] powerpc + ps3 patches Geoff Levand
2020-05-09 18:58 ` [PATCH v2 7/9] powerpc/ps3: Add check for otheros image size Geoff Levand
2020-05-15  2:02   ` Michael Ellerman
2020-05-16 16:03     ` Geoff Levand
2020-05-18  6:31       ` Michael Ellerman

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