From patchwork Wed Jan 13 15:11:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lauri Kasanen X-Patchwork-Id: 12017095 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1053EC43381 for ; Wed, 13 Jan 2021 15:15:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC9E82339F for ; Wed, 13 Jan 2021 15:15:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727098AbhAMPO5 (ORCPT ); Wed, 13 Jan 2021 10:14:57 -0500 Received: from mout.gmx.net ([212.227.17.22]:41283 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727097AbhAMPO4 (ORCPT ); Wed, 13 Jan 2021 10:14:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1610550803; bh=T/6b+3todXSSG5409OuwHyo42/2sCdV+KtuJQSRBK+g=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject; b=FWh3nXwg2U7kY3/f+i1LZYv1f88MH7Z7Ak+jLDQe6RZ+IIj9EJnKHnuiHhyXo1/i4 +d+rev25knhfNDIRWLlOsHGgfslPC+Y5kdo3uWMKRqUQBFAK/1V4g0lXZmjTv0HHwf Ny9cVoEpYCJKuC7D7FXQl4UekeF/Ul2KpCWapoqE= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from Valinor ([82.203.161.65]) by mail.gmx.com (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MKsnF-1keacQ01sr-00LDuL; Wed, 13 Jan 2021 16:13:23 +0100 Date: Wed, 13 Jan 2021 17:11:23 +0200 From: Lauri Kasanen To: linux-mips@vger.kernel.org Cc: tsbogend@alpha.franken.de Subject: [PATCH 2/6 v6] mips: Add N64 machine type Message-Id: <20210113171123.7c819ee9cb9f07f0a4e80e5a@gmx.com> X-Mailer: Sylpheed 3.5.0 (GTK+ 2.18.6; x86_64-unknown-linux-gnu) Mime-Version: 1.0 X-Provags-ID: V03:K1:0UMD4F8XDgJO3tszpN6bdNHvtfSQ8SsGfpA4VQecV0JQxho6KeM uQyy23qVazc9VxYHjC1isBgHwSYw+8rqVFVgxN+Ec8N4fk2+rv7oWsw4FmLAjzgYwOvrrNO Jh8itf9cMnV0M4oJD6xcmU4qIA2heI+NdXchUtRaoIx1T6DSEGLdW1M7hCAcN1AYvIPINAM gCXNh5q9TtCmjn1Qg8GPA== X-UI-Out-Filterresults: notjunk:1;V03:K0:TM496gGslcA=:POk1WtZTaDLzW33DloGENu Qfpcz0LO+PFjVJ0KgmXQ++dx5gHq6Yfxr3rcV1NK2IT4KQJwR4uY+3zAlDyyx8lXwxCg8fihU Gn8q7ozkX0yhyA5TjSZ6DwE2lKZ3D36ITCX2P2E/mk6lAXGVymC6K2kLexXrGiB8/YXZU90cE sbExgLZmi1n9AXUb4P5NfUaj2bDHxvHODrXIARAZtvVkeyIO93p6NaPpMDwHU3rUiyL5w+Z2+ xto5fmz499g8VpaRZAikEKkdh32Vmlq7hgPp3qwl6PcELLgA2PwokOxdG77H8pLE7poklflSF KGd6anCkb4cEVDhrnnkrbAj3Y8YIrsdO8CHFWgnA5JKeeTb/wIlKrVoUc0AIFzQ1c6CGMfYTU iylBMdCH0TaC9BRZRjMP9UoKQzNchy8QYjctV5GFbNYO7k7EQ5ghrmi4OARKXuag8+3SzjzQZ iHvxg1dbGszm+yc/E9RmVxT9bljqoYw0+v7wr0UclvvZ161vTh6Qq+qfcvcBRJrL242eaaTkH YjqnGOrJw15J90U9yfdH1g1vvaswkob/26A+5C8m2ucyZcZtvF9VPbPxEuAULyvZAcHXd+V7C xl84oOKXffjaFqhsLs8VyQPUZGWZcxVhMkPFipaLfk/WOlJ0vIZJWEMpkn+2jnJJ/oBvJKQ2/ MZb0FyfVSh+D5t86VzrSxb6UHuO2H94j0bA8IPBhISiNn7+mXiV1S8/p+FhQ6Jrv04zfCy7yX r85aBu7l/YaoGinBfp2jzwV10B67+TU1TxsdB9zlS521Bmy6M20L8pO004uqlT16t5UZM+JZs odiMxSCsDlJu5ogJq81Q/qKhxs26Ky290OOkfeS6wFuWQvL4ABRqH4tphU++CvI2Q1bPJ45VW K4L+Q+A+aAYaEgE4FCOA== Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Add support for the Nintendo 64. Signed-off-by: Lauri Kasanen --- arch/mips/Kbuild.platforms | 1 + arch/mips/Kconfig | 12 +++ arch/mips/include/asm/mach-n64/irq.h | 9 ++ arch/mips/include/asm/mach-n64/kmalloc.h | 8 ++ arch/mips/n64/Makefile | 6 ++ arch/mips/n64/Platform | 7 ++ arch/mips/n64/init.c | 164 +++++++++++++++++++++++++++++++ arch/mips/n64/irq.c | 16 +++ 8 files changed, 223 insertions(+) create mode 100644 arch/mips/include/asm/mach-n64/irq.h create mode 100644 arch/mips/include/asm/mach-n64/kmalloc.h create mode 100644 arch/mips/n64/Makefile create mode 100644 arch/mips/n64/Platform create mode 100644 arch/mips/n64/init.c create mode 100644 arch/mips/n64/irq.c -- 2.6.2 diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms index 5483e38..e4f6e49 100644 --- a/arch/mips/Kbuild.platforms +++ b/arch/mips/Kbuild.platforms @@ -18,6 +18,7 @@ platform-$(CONFIG_MACH_LOONGSON2EF) += loongson2ef/ platform-$(CONFIG_MACH_LOONGSON32) += loongson32/ platform-$(CONFIG_MACH_LOONGSON64) += loongson64/ platform-$(CONFIG_MIPS_MALTA) += mti-malta/ +platform-$(CONFIG_MACH_NINTENDO64) += n64/ platform-$(CONFIG_NLM_COMMON) += netlogic/ platform-$(CONFIG_PIC32MZDA) += pic32/ platform-$(CONFIG_MACH_PISTACHIO) += pistachio/ diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 4b52588..1b0aae0 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -605,6 +605,18 @@ config MACH_VR41XX select SYS_SUPPORTS_MIPS16 select GPIOLIB +config MACH_NINTENDO64 + bool "Nintendo 64 console" + select CEVT_R4K + select CSRC_R4K + select SYS_HAS_CPU_R4300 + select SYS_SUPPORTS_BIG_ENDIAN + select SYS_SUPPORTS_ZBOOT + select SYS_SUPPORTS_32BIT_KERNEL + select SYS_SUPPORTS_64BIT_KERNEL + select DMA_NONCOHERENT + select IRQ_MIPS_CPU + config RALINK bool "Ralink based machines" select CEVT_R4K diff --git a/arch/mips/include/asm/mach-n64/irq.h b/arch/mips/include/asm/mach-n64/irq.h new file mode 100644 index 0000000..7e260fc --- /dev/null +++ b/arch/mips/include/asm/mach-n64/irq.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_MACH_N64_IRQ_H +#define __ASM_MACH_N64_IRQ_H + +#define NR_IRQS 8 + +#include + +#endif /* __ASM_MACH_N64_IRQ_H */ diff --git a/arch/mips/include/asm/mach-n64/kmalloc.h b/arch/mips/include/asm/mach-n64/kmalloc.h new file mode 100644 index 0000000..e8b8d0b --- /dev/null +++ b/arch/mips/include/asm/mach-n64/kmalloc.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_MACH_N64_KMALLOC_H +#define __ASM_MACH_N64_KMALLOC_H + +/* The default of 128 bytes wastes too much, use 32 (the largest cacheline, I) */ +#define ARCH_DMA_MINALIGN L1_CACHE_BYTES + +#endif /* __ASM_MACH_N64_KMALLOC_H */ diff --git a/arch/mips/n64/Makefile b/arch/mips/n64/Makefile new file mode 100644 index 0000000..b64a05a --- /dev/null +++ b/arch/mips/n64/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Nintendo 64 +# + +obj-y := init.o irq.o diff --git a/arch/mips/n64/Platform b/arch/mips/n64/Platform new file mode 100644 index 0000000..2464783 --- /dev/null +++ b/arch/mips/n64/Platform @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Nintendo 64 +# + +cflags-$(CONFIG_MACH_NINTENDO64) += -I$(srctree)/arch/mips/include/asm/mach-n64 +load-$(CONFIG_MACH_NINTENDO64) += 0xffffffff80101000 diff --git a/arch/mips/n64/init.c b/arch/mips/n64/init.c new file mode 100644 index 0000000..dfbd864 --- /dev/null +++ b/arch/mips/n64/init.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Nintendo 64 init. + * + * Copyright (C) 2021 Lauri Kasanen + */ +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define IO_MEM_RESOURCE_START 0UL +#define IO_MEM_RESOURCE_END 0x1fffffffUL + +/* + * System-specifc irq names for clarity + */ +#define MIPS_CPU_IRQ(x) (MIPS_CPU_IRQ_BASE + (x)) +#define MIPS_SOFTINT0_IRQ MIPS_CPU_IRQ(0) +#define MIPS_SOFTINT1_IRQ MIPS_CPU_IRQ(1) +#define RCP_IRQ MIPS_CPU_IRQ(2) +#define CART_IRQ MIPS_CPU_IRQ(3) +#define PRENMI_IRQ MIPS_CPU_IRQ(4) +#define RDBR_IRQ MIPS_CPU_IRQ(5) +#define RDBW_IRQ MIPS_CPU_IRQ(6) +#define TIMER_IRQ MIPS_CPU_IRQ(7) + +static void __init iomem_resource_init(void) +{ + iomem_resource.start = IO_MEM_RESOURCE_START; + iomem_resource.end = IO_MEM_RESOURCE_END; +} + +const char *get_system_type(void) +{ + return "Nintendo 64"; +} + +void __init prom_init(void) +{ + fw_init_cmdline(); +} + +#define W 320 +#define H 240 +#define REG_BASE ((u32 *) CKSEG1ADDR(0x4400000)) + +static void __init n64rdp_write_reg(const u8 reg, const u32 value) +{ + __raw_writel(value, REG_BASE + reg); +} + +#undef REG_BASE + +static const u32 ntsc_320[] __initconst = { + 0x00013212, 0x00000000, 0x00000140, 0x00000200, + 0x00000000, 0x03e52239, 0x0000020d, 0x00000c15, + 0x0c150c15, 0x006c02ec, 0x002501ff, 0x000e0204, + 0x00000200, 0x00000400 +}; + +#define MI_REG_BASE 0x4300000 +#define NUM_MI_REGS 4 +#define AI_REG_BASE 0x4500000 +#define NUM_AI_REGS 6 +#define PI_REG_BASE 0x4600000 +#define NUM_PI_REGS 5 +#define SI_REG_BASE 0x4800000 +#define NUM_SI_REGS 7 + +static int __init n64_platform_init(void) +{ + static const char simplefb_resname[] = "FB"; + static const struct simplefb_platform_data mode = { + .width = W, + .height = H, + .stride = W * 2, + .format = "r5g5b5a1" + }; + struct resource res[3]; + void *orig; + unsigned long phys; + unsigned i; + + memset(res, 0, sizeof(struct resource) * 3); + res[0].flags = IORESOURCE_MEM; + res[0].start = MI_REG_BASE; + res[0].end = MI_REG_BASE + NUM_MI_REGS * 4 - 1; + + res[1].flags = IORESOURCE_MEM; + res[1].start = AI_REG_BASE; + res[1].end = AI_REG_BASE + NUM_AI_REGS * 4 - 1; + + res[2].flags = IORESOURCE_IRQ; + res[2].start = RCP_IRQ; + res[2].end = RCP_IRQ; + + platform_device_register_simple("n64audio", -1, res, 3); + + memset(&res[0], 0, sizeof(res[0])); + res[0].flags = IORESOURCE_MEM; + res[0].start = PI_REG_BASE; + res[0].end = PI_REG_BASE + NUM_PI_REGS * 4 - 1; + + platform_device_register_simple("n64cart", -1, res, 1); + + memset(&res[0], 0, sizeof(res[0])); + res[0].flags = IORESOURCE_MEM; + res[0].start = SI_REG_BASE; + res[0].end = SI_REG_BASE + NUM_SI_REGS * 4 - 1; + + platform_device_register_simple("n64joy", -1, res, 1); + + /* The framebuffer needs 64-byte alignment */ + orig = kzalloc(W * H * 2 + 63, GFP_DMA | GFP_KERNEL); + if (!orig) + return -ENOMEM; + phys = virt_to_phys(orig); + phys += 63; + phys &= ~63; + + for (i = 0; i < ARRAY_SIZE(ntsc_320); i++) { + if (i == 1) + n64rdp_write_reg(i, phys); + else + n64rdp_write_reg(i, ntsc_320[i]); + } + + /* setup IORESOURCE_MEM as framebuffer memory */ + memset(&res[0], 0, sizeof(res[0])); + res[0].flags = IORESOURCE_MEM; + res[0].name = simplefb_resname; + res[0].start = phys; + res[0].end = phys + W * H * 2 - 1; + + platform_device_register_resndata(NULL, "simple-framebuffer", 0, + &res[0], 1, &mode, sizeof(mode)); + + return 0; +} + +#undef W +#undef H + +arch_initcall(n64_platform_init); + +void __init plat_mem_setup(void) +{ + iomem_resource_init(); + memblock_add(0x0, 8 * 1024 * 1024); /* Bootloader blocks the 4mb config */ +} + +void __init plat_time_init(void) +{ + /* 93.75 MHz cpu, count register runs at half rate */ + mips_hpt_frequency = 93750000 / 2; +} diff --git a/arch/mips/n64/irq.c b/arch/mips/n64/irq.c new file mode 100644 index 0000000..1861e96 --- /dev/null +++ b/arch/mips/n64/irq.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * N64 IRQ + * + * Copyright (C) 2021 Lauri Kasanen + */ +#include +#include +#include + +#include + +void __init arch_init_irq(void) +{ + mips_cpu_irq_init(); +}