2803f36ea7
With this patch we add a couple of of-the-tree patches for u-boot. We have an update in hardware that changed the kick-start slave cores procedure. So these patches introduce fixes to work with new axs103 version correctly. They have been already accepted in upstream u-boot so we need to get rid of them as soon as these updates will get available in buildroot. Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
49 lines
1.5 KiB
Diff
49 lines
1.5 KiB
Diff
From ee5a5a51780bcb17e5240335ddfa9c98a0e6f890 Mon Sep 17 00:00:00 2001
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From: Alexey Brodkin <abrodkin@synopsys.com>
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Date: Thu, 30 Mar 2017 19:18:30 +0300
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Subject: [PATCH] axs103: Clean-up smp_kick_all_cpus()
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* Rely on default pulse polarity value
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* Don't mess with "multicore" value as it doesn't affect execution
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In essence we now do a bare minimal stuff:
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1) Select HS38x2_1 with CORE_SEL=1 bits
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2) Select "manual" core start (via CREG) with START_MODE=0
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3) Generate cpu_start pulse with START=1
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Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
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Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com>
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---
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board/synopsys/axs10x/axs10x.c | 12 +++++-------
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1 file changed, 5 insertions(+), 7 deletions(-)
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diff --git a/board/synopsys/axs10x/axs10x.c b/board/synopsys/axs10x/axs10x.c
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index a5e774b2cf7b..57c790220f71 100644
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--- a/board/synopsys/axs10x/axs10x.c
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+++ b/board/synopsys/axs10x/axs10x.c
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@@ -61,16 +61,14 @@ void smp_kick_all_cpus(void)
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{
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/* CPU start CREG */
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#define AXC003_CREG_CPU_START 0xF0001400
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-
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/* Bits positions in CPU start CREG */
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#define BITS_START 0
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-#define BITS_POLARITY 8
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+#define BITS_START_MODE 4
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#define BITS_CORE_SEL 9
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-#define BITS_MULTICORE 12
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-
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-#define CMD (1 << BITS_MULTICORE) | (1 << BITS_CORE_SEL) | \
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- (1 << BITS_POLARITY) | (1 << BITS_START)
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- writel(CMD, (void __iomem *)AXC003_CREG_CPU_START);
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+ int cmd = readl((void __iomem *)AXC003_CREG_CPU_START);
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+ cmd |= (1 << BITS_CORE_SEL) | (1 << BITS_START);
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+ cmd &= ~(1 << BITS_START_MODE);
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+ writel(cmd, (void __iomem *)AXC003_CREG_CPU_START);
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}
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#endif
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--
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2.7.4
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