From patchwork Wed Mar 14 15:17:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Aleksandar Rikalo X-Patchwork-Id: 885889 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 401cJG0pqGz9sVQ for ; Thu, 15 Mar 2018 03:15:10 +1100 (AEDT) Received: from localhost ([::1]:47182 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ew93T-00066P-V3 for incoming@patchwork.ozlabs.org; Wed, 14 Mar 2018 12:15:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60390) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ew8CT-0007EJ-RU for qemu-devel@nongnu.org; Wed, 14 Mar 2018 11:20:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ew8CO-0006lL-S4 for qemu-devel@nongnu.org; Wed, 14 Mar 2018 11:20:21 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:42233 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ew8CO-0006V0-EA for qemu-devel@nongnu.org; Wed, 14 Mar 2018 11:20:16 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 9AE801A46E7; Wed, 14 Mar 2018 16:19:52 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw304-lin.domain.local (rtrkw304-lin.domain.local [10.10.13.79]) by mail.rt-rk.com (Postfix) with ESMTPSA id 7F9A31A46DC; Wed, 14 Mar 2018 16:19:52 +0100 (CET) From: Aleksandar Rikalo To: qemu-devel@nongnu.org Date: Wed, 14 Mar 2018 16:17:55 +0100 Message-Id: <1521040675-31054-1-git-send-email-aleksandar.rikalo@rt-rk.com> X-Mailer: git-send-email 1.9.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-Mailman-Approved-At: Wed, 14 Mar 2018 12:14:30 -0400 Subject: [Qemu-devel] [PATCH] target-mips: Add initrd support for the Boston board X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Aleksandar Rikalo , Paul Burton , Yongbok Kim , Petar Jovanovic , Aurelien Jarno Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Aleksandar Rikalo Add support for initial ramdisk loading for the Mips Boston board. Signed-off-by: Aleksandar Rikalo Reviewed-by: Philippe Mathieu-Daudé --- hw/mips/boston.c | 54 +++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 45 insertions(+), 9 deletions(-) diff --git a/hw/mips/boston.c b/hw/mips/boston.c index fb23161..67ca54f 100644 --- a/hw/mips/boston.c +++ b/hw/mips/boston.c @@ -30,6 +30,7 @@ #include "hw/loader-fit.h" #include "hw/mips/cps.h" #include "hw/mips/cpudevs.h" +#include "hw/mips/mips.h" #include "hw/pci-host/xilinx-pcie.h" #include "qapi/error.h" #include "qemu/cutils.h" @@ -333,10 +334,12 @@ static const void *boston_fdt_filter(void *opaque, const void *fdt_orig, { BostonState *s = BOSTON(opaque); MachineState *machine = s->mach; - const char *cmdline; + GString *cmdline; int err; void *fdt; size_t fdt_sz, ram_low_sz, ram_high_sz; + long initrd_size; + ram_addr_t initrd_offset; fdt_sz = fdt_totalsize(fdt_orig) * 2; fdt = g_malloc0(fdt_sz); @@ -347,20 +350,53 @@ static const void *boston_fdt_filter(void *opaque, const void *fdt_orig, return NULL; } - cmdline = (machine->kernel_cmdline && machine->kernel_cmdline[0]) - ? machine->kernel_cmdline : " "; - err = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); - if (err < 0) { - fprintf(stderr, "couldn't set /chosen/bootargs\n"); - return NULL; - } - ram_low_sz = MIN(256 * M_BYTE, machine->ram_size); ram_high_sz = machine->ram_size - ram_low_sz; qemu_fdt_setprop_sized_cells(fdt, "/memory@0", "reg", 1, 0x00000000, 1, ram_low_sz, 1, 0x90000000, 1, ram_high_sz); + cmdline = g_string_new(machine->kernel_cmdline); + + /* load initrd */ + initrd_offset = 0; + if (machine->initrd_filename) { + initrd_size = get_image_size(machine->initrd_filename); + if (initrd_size > 0) { + /* The kernel allocates the bootmap memory in the low memory after + the initrd. It takes at most 128kiB for 2GB RAM and 4kiB + pages. */ + initrd_offset = (ram_low_sz - initrd_size - 131072 + - ~INITRD_PAGE_MASK) & INITRD_PAGE_MASK; + + if ((int64_t)cpu_mips_kseg0_to_phys(NULL, *load_addr + fdt_sz) + >= (int64_t)initrd_offset) { + error_report("memory too small for initial ram disk '%s'", + machine->initrd_filename); + exit(1); + } + + initrd_size = load_image_targphys(machine->initrd_filename, + initrd_offset, + initrd_size); + } + if (initrd_size == (target_ulong) -1) { + error_report("could not load initial ram disk '%s'", + machine->initrd_filename); + exit(1); + } + g_string_append_printf(cmdline, " rd_start=0x%" PRIx64 " rd_size=%li", + cpu_mips_phys_to_kseg0(NULL, initrd_offset), + initrd_size); + } + + err = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline->str); + g_string_free(cmdline, true); + if (err < 0) { + fprintf(stderr, "couldn't set /chosen/bootargs\n"); + return NULL; + } + fdt = g_realloc(fdt, fdt_totalsize(fdt)); qemu_fdt_dumpdtb(fdt, fdt_sz);