Hi Patrick, all,
On Thu, Feb 13 2020, Patrick Delaunay wrote:
From: Patrice Chotard patrice.chotard@st.com
If gd->ram_top has been tuned using board_get_usable_ram_top(), it must be taken into account when reserving arch lmb.
Signed-off-by: Patrice Chotard patrice.chotard@st.com Reviewed-by: Patrick DELAUNAY patrick.delaunay@st.com Signed-off-by: Patrick Delaunay patrick.delaunay@st.com
[snip]
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index a135bcfc7b..f4b5ca6de0 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -75,6 +75,9 @@ void arch_lmb_reserve(struct lmb *lmb) gd->bd->bi_dram[bank].size - 1; if (sp > bank_end) continue;
if (bank_end > gd->ram_top)bank_end = gd->ram_top - 1;
This patch (now committed as 8ce1f10cf2b1) breaks kernel boot on Armada 8040 based Clearfog GT-8K with 16GB RAM. See below the console output of v2020.10-rc2 with a few added prints.
The first memory bank (bi_dram[0]) goes from 0 to 3GB. The rest (4GB-17GB) is on bi_dram[1] (see a8k_dram_init_banksize()). ram_top is set to 2GB on arch/arm/mach-mvebu/arm64-common.c:board_get_usable_ram_top().
Reverting commit 8ce1f10cf2b1 on top of v2020.10-rc2 fixes boot.
Any Idea?
Found /extlinux/extlinux.conf Retrieving file: /extlinux/extlinux.conf ## Current stack ends at 0x7fb24300 arch_lmb_reserve: bank_end: bfffffff ram_top: 80000000 62 bytes read in 21 ms (2 KiB/s) 1: linux Retrieving file: /extlinux/Image ## Current stack ends at 0x7fb23960 arch_lmb_reserve: bank_end: bfffffff ram_top: 80000000 13740544 bytes read in 1266 ms (10.4 MiB/s) Retrieving file: /extlinux/armada-8040-clearfog-gt-8k.dtb ## Current stack ends at 0x7fb23960 arch_lmb_reserve: bank_end: bfffffff ram_top: 80000000 33368 bytes read in 31 ms (1 MiB/s) ## Current stack ends at 0x7fb23cd0 arch_lmb_reserve: bank_end: bfffffff ram_top: 80000000 ## Flattened Device Tree blob at 04f00000 Booting using the fdt blob at 0x4f00000 Loading Device Tree to 00000000bfff4000, end 00000000bffff257 ... "Synchronous Abort" handler, esr 0x96000045 elr: 000000000006e1cc lr : 0000000000068fd8 (reloc) elr: 000000007ffa91cc lr : 000000007ffa3fd8 x0 : ffffffffffffffff x1 : 00000000bfffc258 x2 : 0000000000000000 x3 : ffffffffffff7da7 x4 : 0000000004f08258 x5 : 00000000bfff4000 x6 : 00000000bfff4000 x7 : 000000000000000f x8 : 000000007fb23bf8 x9 : 0000000000000008 x10: 00000000bffff257 x11: 00000000bffff257 x12: 0000000000000000 x13: fffffffffffff000 x14: 00000000bfff4000 x15: 0000000000000021 x16: 000000007ff7bc38 x17: 0000000000000000 x18: 000000007fb2add0 x19: 00000000bfff4000 x20: 0000000004f00000 x21: 000000000000b258 x22: 0000000058820000 x23: 0000000000000010 x24: 000000007ffe3c40 x25: 000000007fb23cb8 x26: 00000000c0000000 x27: 0000000000000000 x28: 000000007fc3fd50 x29: 000000007fb23bd0
Code: 54000061 aa0603e0 d65f03c0 38606882 (38206822) Resetting CPU ...
Thanks, baruch
lmb_reserve(lmb, sp, bank_end - sp + 1); break;}