From: Qing Zhang <zhangqing@loongson.cn>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>,
Huacai Chen <chenhuacai@kernel.org>,
Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, Ming Wang <wangming01@loongson.cn>
Subject: [PATCH v5 4/7] MIPS: Loongson64: Add Loongson-2K1000 early_printk_port
Date: Mon, 15 Mar 2021 15:50:01 +0800 [thread overview]
Message-ID: <20210315075004.15465-5-zhangqing@loongson.cn> (raw)
In-Reply-To: <20210315075004.15465-1-zhangqing@loongson.cn>
Distinguish between Loongson-3A series CPU and Loongson-2K1000 CPU UART0.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Tested-by: Ming Wang <wangming01@loongson.cn>
---
v4-v5:
- No change
arch/mips/loongson64/init.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c
index ed280b73bf89..d5a1eddb8202 100644
--- a/arch/mips/loongson64/init.c
+++ b/arch/mips/loongson64/init.c
@@ -120,7 +120,10 @@ void __init prom_init(void)
#endif
/* Hardcode to CPU UART 0 */
- setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
+ if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R)
+ setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE), 0, 1024);
+ else
+ setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
register_smp_ops(&loongson3_smp_ops);
board_nmi_handler_setup = mips_nmi_setup;
--
2.20.1
next prev parent reply other threads:[~2021-03-15 7:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 7:49 [PATCH v5 0/7] Add basic support for Loongson-2K1000 Qing Zhang
2021-03-15 7:49 ` [PATCH v5 1/7] MIPS: Loongson64: DeviceTree " Qing Zhang
2021-03-15 7:49 ` [PATCH v5 2/7] MIPS: Loongson64: Distinguish firmware dependencies DTB/LEFI Qing Zhang
2021-03-15 7:50 ` [PATCH v5 3/7] MIPS: Loongson64: Add support for the Loongson-2K1000 to get cpu_clock_freq Qing Zhang
2021-03-15 7:50 ` Qing Zhang [this message]
2021-03-15 7:50 ` [PATCH v5 5/7] irqchip/loongson-liointc: irqchip add 2.0 version Qing Zhang
2021-03-24 9:58 ` Thomas Bogendoerfer
2021-03-24 12:53 ` Marc Zyngier
2021-03-15 7:50 ` [PATCH v5 6/7] dt-bindings: interrupt-controller: Add Loongson-2K1000 LIOINTC Qing Zhang
2021-03-23 22:41 ` Rob Herring
2021-03-15 7:50 ` [PATCH v5 7/7] MIPS: Loongson64: Add a Loongson-2K1000 default config file Qing Zhang
2021-03-20 9:28 ` [PATCH v5 0/7] Add basic support for Loongson-2K1000 zhangqing
2021-03-25 9:58 ` Thomas Bogendoerfer
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