openwrt/target/linux/bcm27xx/patches-4.19/950-0616-arm64-mm-Limit-the-DMA-zone-for-arm64.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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Diff

From 2722f08c4c59901bd506184e2dcbbbd532aef0b3 Mon Sep 17 00:00:00 2001
From: Andrei Gherzan <andrei@balena.io>
Date: Tue, 16 Jul 2019 13:28:22 +0100
Subject: [PATCH] arm64/mm: Limit the DMA zone for arm64
On RaspberryPi, only the first 1Gb can be used for DMA[1].
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-July/665986.html
Signed-off-by: Andrei Gherzan <andrei@balena.io>
---
arch/arm64/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -224,7 +224,7 @@ static void __init reserve_elfcorehdr(vo
static phys_addr_t __init max_zone_dma_phys(void)
{
phys_addr_t offset = memblock_start_of_DRAM() & GENMASK_ULL(63, 32);
- return min(offset + (1ULL << 32), memblock_end_of_DRAM());
+ return min(offset + (1ULL << 30), memblock_end_of_DRAM());
}
#ifdef CONFIG_NUMA