| Message ID | 1580079311-20447-25-git-send-email-aleksandar.markovic@rt-rk.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | target/avr merger | expand |
23:56 Ned, 26.01.2020. Aleksandar Markovic <aleksandar.markovic@rt-rk.com> је написао/ла: > > From: Philippe Mathieu-Daudé <f4bug@amsat.org> > > Add avr_load_firmware() function to load firmware in ELF or > raw binary format. > > [AM: Corrected the type of the variable containing e_flags] > > Suggested-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com> > Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > Signed-off-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com> > --- > hw/avr/Makefile.objs | 1 + > hw/avr/boot.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++ > hw/avr/boot.h | 33 +++++++++++++++++++++++ > include/elf.h | 2 ++ > 4 files changed, 110 insertions(+) > create mode 100644 hw/avr/Makefile.objs > create mode 100644 hw/avr/boot.c > create mode 100644 hw/avr/boot.h > > diff --git a/hw/avr/Makefile.objs b/hw/avr/Makefile.objs > new file mode 100644 > index 0000000..123f174 > --- /dev/null > +++ b/hw/avr/Makefile.objs > @@ -0,0 +1 @@ > +obj-y += boot.o > diff --git a/hw/avr/boot.c b/hw/avr/boot.c > new file mode 100644 > index 0000000..9ac2c88 > --- /dev/null > +++ b/hw/avr/boot.c > @@ -0,0 +1,74 @@ > +/* > + * AVR loader helpers > + * > + * Copyright (c) 2019 Philippe Mathieu-Daudé > + * > + * This work is licensed under the terms of the GNU GPLv2 or later. > + * See the COPYING file in the top-level directory. > + * SPDX-License-Identifier: GPL-2.0-or-later > + */ > + > +#include "qemu/osdep.h" > +#include "qemu-common.h" > +#include "hw/loader.h" > +#include "elf.h" > +#include "boot.h" > +#include "qemu/error-report.h" > + > +bool avr_load_firmware(AVRCPU *cpu, MachineState *ms, > + MemoryRegion *mr, const char *firmware) > +{ > + const char *filename; > + int bytes_loaded; > + uint64_t entry; > + uint32_t e_flags; > + > + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, firmware); > + if (filename == NULL) { > + error_report("Unable to find %s", firmware); > + return false; > + } > + > + bytes_loaded = load_elf_ram_sym(filename, > + NULL, NULL, NULL, > + &entry, NULL, NULL, > + &e_flags, 0, EM_AVR, 0, 0, > + NULL, true, NULL); > + if (bytes_loaded >= 0) { > + /* If ELF file is provided, determine CPU type reading ELF e_flags. */ > + const char *elf_cpu = avr_flags_to_cpu_type(e_flags, NULL); > + const char *mcu_cpu_type = object_get_typename(OBJECT(cpu)); > + int cpu_len = strlen(mcu_cpu_type) - strlen(AVR_CPU_TYPE_SUFFIX); > + > + if (entry) { > + error_report("BIOS entry_point must be 0x0000 " > + "(ELF image '%s' has entry_point 0x%04" PRIx64 ")", > + firmware, entry); > + return false; > + } > + if (!elf_cpu) { > + warn_report("Could not determine CPU type for ELF image '%s', " > + "assuming '%.*s' CPU", > + firmware, cpu_len, mcu_cpu_type); > + return true; > + } > + if (strcmp(elf_cpu, mcu_cpu_type)) { > + error_report("Current machine: %s with '%.*s' CPU", > + MACHINE_GET_CLASS(ms)->desc, cpu_len, mcu_cpu_type); > + error_report("ELF image '%s' is for '%.*s' CPU", > + firmware, > + (int)(strlen(elf_cpu) - strlen(AVR_CPU_TYPE_SUFFIX)), > + elf_cpu); > + return false; > + } > + } else { > + bytes_loaded = load_image_targphys(filename, OFFSET_CODE, > + memory_region_size(mr)); > + } > + if (bytes_loaded < 0) { > + error_report("Unable to load firmware image %s as ELF or raw binary", > + firmware); > + return false; > + } > + return true; > +} > diff --git a/hw/avr/boot.h b/hw/avr/boot.h > new file mode 100644 > index 0000000..62bc10c > --- /dev/null > +++ b/hw/avr/boot.h > @@ -0,0 +1,33 @@ > +/* > + * AVR loader helpers > + * > + * Copyright (c) 2019 Philippe Mathieu-Daudé > + * > + * This work is licensed under the terms of the GNU GPLv2 or later. > + * See the COPYING file in the top-level directory. > + * SPDX-License-Identifier: GPL-2.0-or-later > + */ > + > +#ifndef HW_AVR_BOOT_H > +#define HW_AVR_BOOT_H > + > +#include "hw/boards.h" > +#include "cpu.h" > + > +/** > + * avr_load_firmware: load an image into a memory region > + * > + * @cpu: Handle a AVR CPU object > + * @ms: A MachineState > + * @mr: Memory Region to load into > + * @firmware: Path to the firmware file (raw binary or ELF format) > + * > + * Load a firmware supplied by the machine or by the user with the > + * '-bios' command line option, and put it in target memory. > + * > + * Returns: true on success, false on error. > + */ > +bool avr_load_firmware(AVRCPU *cpu, MachineState *ms, > + MemoryRegion *mr, const char *firmware); > + > +#endif > diff --git a/include/elf.h b/include/elf.h > index 8fbfe60..3f08f68 100644 > --- a/include/elf.h > +++ b/include/elf.h > @@ -202,6 +202,8 @@ typedef struct mips_elf_abiflags_v0 { > #define EM_MOXIE 223 /* Moxie processor family */ > #define EM_MOXIE_OLD 0xFEED > > +#define EM_AVR 83 /* AVR 8-bit microcontroller */ > + This line is misplaced - it should be placed earlier, to respect the order of EM_XXX constants. > /* This is the info that is needed to parse the dynamic section of the file */ > #define DT_NULL 0 > #define DT_NEEDED 1 > -- > 2.7.4 >
diff --git a/hw/avr/Makefile.objs b/hw/avr/Makefile.objs new file mode 100644 index 0000000..123f174 --- /dev/null +++ b/hw/avr/Makefile.objs @@ -0,0 +1 @@ +obj-y += boot.o diff --git a/hw/avr/boot.c b/hw/avr/boot.c new file mode 100644 index 0000000..9ac2c88 --- /dev/null +++ b/hw/avr/boot.c @@ -0,0 +1,74 @@ +/* + * AVR loader helpers + * + * Copyright (c) 2019 Philippe Mathieu-Daudé + * + * This work is licensed under the terms of the GNU GPLv2 or later. + * See the COPYING file in the top-level directory. + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "hw/loader.h" +#include "elf.h" +#include "boot.h" +#include "qemu/error-report.h" + +bool avr_load_firmware(AVRCPU *cpu, MachineState *ms, + MemoryRegion *mr, const char *firmware) +{ + const char *filename; + int bytes_loaded; + uint64_t entry; + uint32_t e_flags; + + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, firmware); + if (filename == NULL) { + error_report("Unable to find %s", firmware); + return false; + } + + bytes_loaded = load_elf_ram_sym(filename, + NULL, NULL, NULL, + &entry, NULL, NULL, + &e_flags, 0, EM_AVR, 0, 0, + NULL, true, NULL); + if (bytes_loaded >= 0) { + /* If ELF file is provided, determine CPU type reading ELF e_flags. */ + const char *elf_cpu = avr_flags_to_cpu_type(e_flags, NULL); + const char *mcu_cpu_type = object_get_typename(OBJECT(cpu)); + int cpu_len = strlen(mcu_cpu_type) - strlen(AVR_CPU_TYPE_SUFFIX); + + if (entry) { + error_report("BIOS entry_point must be 0x0000 " + "(ELF image '%s' has entry_point 0x%04" PRIx64 ")", + firmware, entry); + return false; + } + if (!elf_cpu) { + warn_report("Could not determine CPU type for ELF image '%s', " + "assuming '%.*s' CPU", + firmware, cpu_len, mcu_cpu_type); + return true; + } + if (strcmp(elf_cpu, mcu_cpu_type)) { + error_report("Current machine: %s with '%.*s' CPU", + MACHINE_GET_CLASS(ms)->desc, cpu_len, mcu_cpu_type); + error_report("ELF image '%s' is for '%.*s' CPU", + firmware, + (int)(strlen(elf_cpu) - strlen(AVR_CPU_TYPE_SUFFIX)), + elf_cpu); + return false; + } + } else { + bytes_loaded = load_image_targphys(filename, OFFSET_CODE, + memory_region_size(mr)); + } + if (bytes_loaded < 0) { + error_report("Unable to load firmware image %s as ELF or raw binary", + firmware); + return false; + } + return true; +} diff --git a/hw/avr/boot.h b/hw/avr/boot.h new file mode 100644 index 0000000..62bc10c --- /dev/null +++ b/hw/avr/boot.h @@ -0,0 +1,33 @@ +/* + * AVR loader helpers + * + * Copyright (c) 2019 Philippe Mathieu-Daudé + * + * This work is licensed under the terms of the GNU GPLv2 or later. + * See the COPYING file in the top-level directory. + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef HW_AVR_BOOT_H +#define HW_AVR_BOOT_H + +#include "hw/boards.h" +#include "cpu.h" + +/** + * avr_load_firmware: load an image into a memory region + * + * @cpu: Handle a AVR CPU object + * @ms: A MachineState + * @mr: Memory Region to load into + * @firmware: Path to the firmware file (raw binary or ELF format) + * + * Load a firmware supplied by the machine or by the user with the + * '-bios' command line option, and put it in target memory. + * + * Returns: true on success, false on error. + */ +bool avr_load_firmware(AVRCPU *cpu, MachineState *ms, + MemoryRegion *mr, const char *firmware); + +#endif diff --git a/include/elf.h b/include/elf.h index 8fbfe60..3f08f68 100644 --- a/include/elf.h +++ b/include/elf.h @@ -202,6 +202,8 @@ typedef struct mips_elf_abiflags_v0 { #define EM_MOXIE 223 /* Moxie processor family */ #define EM_MOXIE_OLD 0xFEED +#define EM_AVR 83 /* AVR 8-bit microcontroller */ + /* This is the info that is needed to parse the dynamic section of the file */ #define DT_NULL 0 #define DT_NEEDED 1