From patchwork Sun Sep 1 15:54:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fredrik Noring X-Patchwork-Id: 11125415 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 16D26112C for ; Sun, 1 Sep 2019 15:54:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F32CC233A2 for ; Sun, 1 Sep 2019 15:54:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726552AbfIAPyX (ORCPT ); Sun, 1 Sep 2019 11:54:23 -0400 Received: from pio-pvt-msa3.bahnhof.se ([79.136.2.42]:42070 "EHLO pio-pvt-msa3.bahnhof.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725954AbfIAPyX (ORCPT ); Sun, 1 Sep 2019 11:54:23 -0400 Received: from localhost (localhost [127.0.0.1]) by pio-pvt-msa3.bahnhof.se (Postfix) with ESMTP id ECA963F69D for ; Sun, 1 Sep 2019 17:54:21 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at bahnhof.se X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=6.31 tests=[BAYES_00=-1.9, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from pio-pvt-msa3.bahnhof.se ([127.0.0.1]) by localhost (pio-pvt-msa3.bahnhof.se [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sy9hcjzcMVHU for ; Sun, 1 Sep 2019 17:54:21 +0200 (CEST) Received: from localhost (h-41-252.A163.priv.bahnhof.se [46.59.41.252]) (Authenticated sender: mb547485) by pio-pvt-msa3.bahnhof.se (Postfix) with ESMTPA id 4D07D3F695 for ; Sun, 1 Sep 2019 17:54:21 +0200 (CEST) Date: Sun, 1 Sep 2019 17:54:21 +0200 From: Fredrik Noring To: linux-mips@vger.kernel.org Subject: [PATCH 046/120] MIPS: PS2: Identify the machine by model name Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org ROM version 1.00 is always SCPH-10000. Later machines with ROM version 1.0x have the machine name in the ROM0 file OSDSYS at offset 0x8c808. These are late SCPH-10000 and all SCPH-15000. Even later machines have a system command (SCMD) to read the machine name. The machine name is shown in the /proc/cpuinfo file, for example: # grep machine /proc/cpuinfo machine : SCPH-37000 L Signed-off-by: Fredrik Noring --- arch/mips/ps2/Makefile | 1 + arch/mips/ps2/identify.c | 80 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+) create mode 100644 arch/mips/ps2/identify.c diff --git a/arch/mips/ps2/Makefile b/arch/mips/ps2/Makefile index a56ea782120e..b53bddcc8c01 100644 --- a/arch/mips/ps2/Makefile +++ b/arch/mips/ps2/Makefile @@ -1,4 +1,5 @@ obj-y += dmac-irq.o +obj-y += identify.o obj-y += intc-irq.o obj-y += irq.o obj-y += memory.o diff --git a/arch/mips/ps2/identify.c b/arch/mips/ps2/identify.c new file mode 100644 index 000000000000..264fdc13dc43 --- /dev/null +++ b/arch/mips/ps2/identify.c @@ -0,0 +1,80 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PlayStation 2 identification + * + * Copyright (C) 2019 Fredrik Noring + */ + +#include +#include +#include + +#include + +#include +#include + +static int __init set_machine_name_by_scmd(void) +{ + const struct scmd_machine_name machine = scmd_read_machine_name(); + + if (machine.name[0] == '\0') { + pr_err("identify: %s: Reading failed\n", __func__); + return -EIO; + } + + mips_set_machine_name(machine.name); + + return 0; +} + +static int __init set_machine_name_by_osdsys(void) +{ + char name[12] = { }; + int err = rom_read_file(rom0_dir, "OSDSYS", + name, sizeof(name) - 1, 0x8c808); + + if (err) { + pr_err("identify: %s: Reading failed with %d\n", __func__, err); + return err; + } + + mips_set_machine_name(name); + + return 0; +} + +static void __init set_machine_name(void) +{ + const int rom_version_number = rom_version().number; + int err = 0; + + /* + * ROM version 1.00 is always SCPH-10000. Later machines with + * ROM version 1.0x have the machine name in the ROM0 file OSDSYS + * at offset 0x8c808. These are late SCPH-10000 and all SCPH-15000. + * Even later machines have a system command (SCMD) to read the + * machine name. + */ + + if (rom_version_number >= 0x110) + err = set_machine_name_by_scmd(); /* ver >= 1.10 */ + else if (rom_version_number > 0x100) + err = set_machine_name_by_osdsys(); /* 1.10 > ver > 1.00 */ + else if (rom_version_number == 0x100) + mips_set_machine_name("SCPH-10000"); /* ver = 1.00 */ + else + err = -ENODEV; + + if (err) + pr_err("identify: Determining machine name for ROM %04x failed with %d\n", + rom_version_number, err); +} + +static int __init ps2_identify_init(void) +{ + set_machine_name(); + + return 0; +} +subsys_initcall(ps2_identify_init);