| Message ID | 20230508075859.3326566-12-clg@kaod.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | aspeed: fixes and extensions | expand |
On 8/5/23 09:58, Cédric Le Goater wrote: > Most of the Aspeed machines use the UART5 device for the boot console, > and QEMU connects the first serial Chardev to this SoC device for this > purpose. See routine connect_serial_hds_to_uarts(). > > Nevertheless, some machines use another boot console, such as the fuji, > and commit 5d63d0c76c ("hw/arm/aspeed: Allow machine to set UART > default") introduced a SoC class attribute 'uart_default' and property > to be able to change the boot console device. It was later changed by > commit d2b3eaefb4 ("aspeed: Refactor UART init for multi-SoC machines"). > > The "uart" machine option goes a step further and lets the user define > the UART device from the QEMU command line without introducing a new > machine definition. For instance, to use device UART3 (mapped on > /dev/ttyS2 under Linux) instead of the default UART5, one would use : > > -M ast2500-evb,uart=uart3 > > Cc: Abhishek Singh Dagur <abhishek@drut.io> > Signed-off-by: Cédric Le Goater <clg@kaod.org> > --- > docs/system/arm/aspeed.rst | 10 ++++++++++ > hw/arm/aspeed.c | 39 ++++++++++++++++++++++++++++++++++++-- > 2 files changed, 47 insertions(+), 2 deletions(-) > > diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst > index d4e293e7f9..e70f0aeea3 100644 > --- a/docs/system/arm/aspeed.rst > +++ b/docs/system/arm/aspeed.rst > @@ -122,6 +122,10 @@ Options specific to Aspeed machines are : > > * ``spi-model`` to change the SPI Flash model. > > + * ``uart`` to change the default console device. Most of the machines > + use the ``UART5`` device for a boot console, which is mapped on > + ``/dev/ttyS4`` under Linux, but it is not always the case. This comment ... > For instance, to start the ``ast2500-evb`` machine with a different > FMC chip and a bigger (64M) SPI chip, use : > > @@ -129,6 +133,12 @@ FMC chip and a bigger (64M) SPI chip, use : > > -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f > > +To change the boot console and use device ``UART3`` (``/dev/ttyS2`` > +under Linux), use : ... and this one suggest 'boot-console' could be a better name. Or 'boot-console-index'. > +.. code-block:: bash > + > + -M ast2500-evb,uart=uart3 > > Aspeed minibmc family boards (``ast1030-evb``) > ================================================================== > diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c > index 3d5488faf7..6c32f674b9 100644 > --- a/hw/arm/aspeed.c > +++ b/hw/arm/aspeed.c > @@ -43,6 +43,7 @@ struct AspeedMachineState { > AspeedSoCState soc; > MemoryRegion boot_rom; > bool mmio_exec; > + uint32_t uart_chosen; > char *fmc_model; > char *spi_model; > }; > @@ -331,10 +332,11 @@ static void connect_serial_hds_to_uarts(AspeedMachineState *bmc) > AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); > AspeedSoCState *s = &bmc->soc; > AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); > + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; > > - aspeed_soc_uart_set_chr(s, amc->uart_default, serial_hd(0)); > + aspeed_soc_uart_set_chr(s, uart_chosen, serial_hd(0)); > for (int i = 1, uart = ASPEED_DEV_UART1; i < sc->uarts_num; i++, uart++) { > - if (uart == amc->uart_default) { > + if (uart == uart_chosen) { > continue; > } > aspeed_soc_uart_set_chr(s, uart, serial_hd(i)); > @@ -1077,6 +1079,35 @@ static void aspeed_set_spi_model(Object *obj, const char *value, Error **errp) > bmc->spi_model = g_strdup(value); > } > > +static char *aspeed_get_uart(Object *obj, Error **errp) > +{ > + AspeedMachineState *bmc = ASPEED_MACHINE(obj); > + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); > + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; > + > + return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART1 + 1); > +} > + > +static void aspeed_set_uart(Object *obj, const char *value, Error **errp) > +{ > + AspeedMachineState *bmc = ASPEED_MACHINE(obj); > + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); > + AspeedSoCClass *sc = ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); > + int val; > + > + if (sscanf(value, "uart%u", &val) != 1) { > + error_setg(errp, "Bad value for \"uart\" property"); Why are you asking for a string and not an index? > + return; > + } > + > + /* The number of UART depends on the SoC */ > + if (val < 1 || val > sc->uarts_num) { > + error_setg(errp, "\"uart\" should be in range [1 - %d]", sc->uarts_num); > + return; > + } > + bmc->uart_chosen = ASPEED_DEV_UART1 + val - 1; > +} > + > static void aspeed_machine_class_props_init(ObjectClass *oc) > { > object_class_property_add_bool(oc, "execute-in-place", > @@ -1085,6 +1116,10 @@ static void aspeed_machine_class_props_init(ObjectClass *oc) > object_class_property_set_description(oc, "execute-in-place", > "boot directly from CE0 flash device"); > > + object_class_property_add_str(oc, "uart", aspeed_get_uart, aspeed_set_uart); > + object_class_property_set_description(oc, "uart", > + "Change the default UART to \"uartX\""); > + > object_class_property_add_str(oc, "fmc-model", aspeed_get_fmc_model, > aspeed_set_fmc_model); > object_class_property_set_description(oc, "fmc-model",
On 5/30/23 23:22, Philippe Mathieu-Daudé wrote: > On 8/5/23 09:58, Cédric Le Goater wrote: >> Most of the Aspeed machines use the UART5 device for the boot console, >> and QEMU connects the first serial Chardev to this SoC device for this >> purpose. See routine connect_serial_hds_to_uarts(). >> >> Nevertheless, some machines use another boot console, such as the fuji, >> and commit 5d63d0c76c ("hw/arm/aspeed: Allow machine to set UART >> default") introduced a SoC class attribute 'uart_default' and property >> to be able to change the boot console device. It was later changed by >> commit d2b3eaefb4 ("aspeed: Refactor UART init for multi-SoC machines"). >> >> The "uart" machine option goes a step further and lets the user define >> the UART device from the QEMU command line without introducing a new >> machine definition. For instance, to use device UART3 (mapped on >> /dev/ttyS2 under Linux) instead of the default UART5, one would use : >> >> -M ast2500-evb,uart=uart3 >> >> Cc: Abhishek Singh Dagur <abhishek@drut.io> >> Signed-off-by: Cédric Le Goater <clg@kaod.org> >> --- >> docs/system/arm/aspeed.rst | 10 ++++++++++ >> hw/arm/aspeed.c | 39 ++++++++++++++++++++++++++++++++++++-- >> 2 files changed, 47 insertions(+), 2 deletions(-) >> >> diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst >> index d4e293e7f9..e70f0aeea3 100644 >> --- a/docs/system/arm/aspeed.rst >> +++ b/docs/system/arm/aspeed.rst >> @@ -122,6 +122,10 @@ Options specific to Aspeed machines are : >> * ``spi-model`` to change the SPI Flash model. >> + * ``uart`` to change the default console device. Most of the machines >> + use the ``UART5`` device for a boot console, which is mapped on >> + ``/dev/ttyS4`` under Linux, but it is not always the case. > > This comment ... > >> For instance, to start the ``ast2500-evb`` machine with a different >> FMC chip and a bigger (64M) SPI chip, use : >> @@ -129,6 +133,12 @@ FMC chip and a bigger (64M) SPI chip, use : >> -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f >> +To change the boot console and use device ``UART3`` (``/dev/ttyS2`` >> +under Linux), use : > > ... and this one suggest 'boot-console' could be a better name. > > Or 'boot-console-index'. you might be right. people expect to find the console messages on this device. I will think about it. > >> +.. code-block:: bash >> + >> + -M ast2500-evb,uart=uart3 >> Aspeed minibmc family boards (``ast1030-evb``) >> ================================================================== >> diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c >> index 3d5488faf7..6c32f674b9 100644 >> --- a/hw/arm/aspeed.c >> +++ b/hw/arm/aspeed.c >> @@ -43,6 +43,7 @@ struct AspeedMachineState { >> AspeedSoCState soc; >> MemoryRegion boot_rom; >> bool mmio_exec; >> + uint32_t uart_chosen; >> char *fmc_model; >> char *spi_model; >> }; >> @@ -331,10 +332,11 @@ static void connect_serial_hds_to_uarts(AspeedMachineState *bmc) >> AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >> AspeedSoCState *s = &bmc->soc; >> AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); >> + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; >> - aspeed_soc_uart_set_chr(s, amc->uart_default, serial_hd(0)); >> + aspeed_soc_uart_set_chr(s, uart_chosen, serial_hd(0)); >> for (int i = 1, uart = ASPEED_DEV_UART1; i < sc->uarts_num; i++, uart++) { >> - if (uart == amc->uart_default) { >> + if (uart == uart_chosen) { >> continue; >> } >> aspeed_soc_uart_set_chr(s, uart, serial_hd(i)); >> @@ -1077,6 +1079,35 @@ static void aspeed_set_spi_model(Object *obj, const char *value, Error **errp) >> bmc->spi_model = g_strdup(value); >> } >> +static char *aspeed_get_uart(Object *obj, Error **errp) >> +{ >> + AspeedMachineState *bmc = ASPEED_MACHINE(obj); >> + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >> + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; >> + >> + return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART1 + 1); >> +} >> + >> +static void aspeed_set_uart(Object *obj, const char *value, Error **errp) >> +{ >> + AspeedMachineState *bmc = ASPEED_MACHINE(obj); >> + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >> + AspeedSoCClass *sc = ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); >> + int val; >> + >> + if (sscanf(value, "uart%u", &val) != 1) { >> + error_setg(errp, "Bad value for \"uart\" property"); > > Why are you asking for a string and not an index? because the literal name is what people find in the DT. See files arch/arm/boot/dts/aspeed-bmc-* under Linux. Thanks, C. > >> + return; >> + } >> + >> + /* The number of UART depends on the SoC */ >> + if (val < 1 || val > sc->uarts_num) { >> + error_setg(errp, "\"uart\" should be in range [1 - %d]", sc->uarts_num); >> + return; >> + } >> + bmc->uart_chosen = ASPEED_DEV_UART1 + val - 1; >> +} >> + >> static void aspeed_machine_class_props_init(ObjectClass *oc) >> { >> object_class_property_add_bool(oc, "execute-in-place", >> @@ -1085,6 +1116,10 @@ static void aspeed_machine_class_props_init(ObjectClass *oc) >> object_class_property_set_description(oc, "execute-in-place", >> "boot directly from CE0 flash device"); >> + object_class_property_add_str(oc, "uart", aspeed_get_uart, aspeed_set_uart); >> + object_class_property_set_description(oc, "uart", >> + "Change the default UART to \"uartX\""); >> + >> object_class_property_add_str(oc, "fmc-model", aspeed_get_fmc_model, >> aspeed_set_fmc_model); >> object_class_property_set_description(oc, "fmc-model", >
On 31/5/23 08:28, Cédric Le Goater wrote: > On 5/30/23 23:22, Philippe Mathieu-Daudé wrote: >> On 8/5/23 09:58, Cédric Le Goater wrote: >>> Most of the Aspeed machines use the UART5 device for the boot console, >>> and QEMU connects the first serial Chardev to this SoC device for this >>> purpose. See routine connect_serial_hds_to_uarts(). >>> >>> Nevertheless, some machines use another boot console, such as the fuji, >>> and commit 5d63d0c76c ("hw/arm/aspeed: Allow machine to set UART >>> default") introduced a SoC class attribute 'uart_default' and property >>> to be able to change the boot console device. It was later changed by >>> commit d2b3eaefb4 ("aspeed: Refactor UART init for multi-SoC machines"). >>> >>> The "uart" machine option goes a step further and lets the user define >>> the UART device from the QEMU command line without introducing a new >>> machine definition. For instance, to use device UART3 (mapped on >>> /dev/ttyS2 under Linux) instead of the default UART5, one would use : >>> >>> -M ast2500-evb,uart=uart3 >>> >>> Cc: Abhishek Singh Dagur <abhishek@drut.io> >>> Signed-off-by: Cédric Le Goater <clg@kaod.org> >>> --- >>> docs/system/arm/aspeed.rst | 10 ++++++++++ >>> hw/arm/aspeed.c | 39 ++++++++++++++++++++++++++++++++++++-- >>> 2 files changed, 47 insertions(+), 2 deletions(-) >>> >>> diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst >>> index d4e293e7f9..e70f0aeea3 100644 >>> --- a/docs/system/arm/aspeed.rst >>> +++ b/docs/system/arm/aspeed.rst >>> @@ -122,6 +122,10 @@ Options specific to Aspeed machines are : >>> * ``spi-model`` to change the SPI Flash model. >>> + * ``uart`` to change the default console device. Most of the machines >>> + use the ``UART5`` device for a boot console, which is mapped on >>> + ``/dev/ttyS4`` under Linux, but it is not always the case. >> >> This comment ... >> >>> For instance, to start the ``ast2500-evb`` machine with a different >>> FMC chip and a bigger (64M) SPI chip, use : >>> @@ -129,6 +133,12 @@ FMC chip and a bigger (64M) SPI chip, use : >>> -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f >>> +To change the boot console and use device ``UART3`` (``/dev/ttyS2`` >>> +under Linux), use : >> >> ... and this one suggest 'boot-console' could be a better name. >> >> Or 'boot-console-index'. > > you might be right. people expect to find the console messages on > this device. I will think about it. > >> >>> +.. code-block:: bash >>> + >>> + -M ast2500-evb,uart=uart3 >>> Aspeed minibmc family boards (``ast1030-evb``) >>> ================================================================== >>> diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c >>> index 3d5488faf7..6c32f674b9 100644 >>> --- a/hw/arm/aspeed.c >>> +++ b/hw/arm/aspeed.c >>> @@ -43,6 +43,7 @@ struct AspeedMachineState { >>> AspeedSoCState soc; >>> MemoryRegion boot_rom; >>> bool mmio_exec; >>> + uint32_t uart_chosen; >>> char *fmc_model; >>> char *spi_model; >>> }; >>> @@ -331,10 +332,11 @@ static void >>> connect_serial_hds_to_uarts(AspeedMachineState *bmc) >>> AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >>> AspeedSoCState *s = &bmc->soc; >>> AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); >>> + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : >>> amc->uart_default; >>> - aspeed_soc_uart_set_chr(s, amc->uart_default, serial_hd(0)); >>> + aspeed_soc_uart_set_chr(s, uart_chosen, serial_hd(0)); >>> for (int i = 1, uart = ASPEED_DEV_UART1; i < sc->uarts_num; >>> i++, uart++) { >>> - if (uart == amc->uart_default) { >>> + if (uart == uart_chosen) { >>> continue; >>> } >>> aspeed_soc_uart_set_chr(s, uart, serial_hd(i)); >>> @@ -1077,6 +1079,35 @@ static void aspeed_set_spi_model(Object *obj, >>> const char *value, Error **errp) >>> bmc->spi_model = g_strdup(value); >>> } >>> +static char *aspeed_get_uart(Object *obj, Error **errp) >>> +{ >>> + AspeedMachineState *bmc = ASPEED_MACHINE(obj); >>> + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >>> + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : >>> amc->uart_default; >>> + >>> + return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART1 >>> + 1); >>> +} >>> + >>> +static void aspeed_set_uart(Object *obj, const char *value, Error >>> **errp) >>> +{ >>> + AspeedMachineState *bmc = ASPEED_MACHINE(obj); >>> + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >>> + AspeedSoCClass *sc = >>> ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); >>> + int val; >>> + >>> + if (sscanf(value, "uart%u", &val) != 1) { >>> + error_setg(errp, "Bad value for \"uart\" property"); >> >> Why are you asking for a string and not an index? > > because the literal name is what people find in the DT. See files > arch/arm/boot/dts/aspeed-bmc-* under Linux. OK. After looking at this file, I suppose people would expect a "bmc-console" property name: -M ast2500-evb,bmc-console=uart3
>>>> +static void aspeed_set_uart(Object *obj, const char *value, Error **errp) >>>> +{ >>>> + AspeedMachineState *bmc = ASPEED_MACHINE(obj); >>>> + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); >>>> + AspeedSoCClass *sc = ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); >>>> + int val; >>>> + >>>> + if (sscanf(value, "uart%u", &val) != 1) { >>>> + error_setg(errp, "Bad value for \"uart\" property"); >>> >>> Why are you asking for a string and not an index? >> >> because the literal name is what people find in the DT. See files >> arch/arm/boot/dts/aspeed-bmc-* under Linux. > > OK. After looking at this file, I suppose people would expect > a "bmc-console" property name: > > -M ast2500-evb,bmc-console=uart3 > yes. This is better naming for the user. I will keep the internal 'uart_chosen' though. Thanks, C.
diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst index d4e293e7f9..e70f0aeea3 100644 --- a/docs/system/arm/aspeed.rst +++ b/docs/system/arm/aspeed.rst @@ -122,6 +122,10 @@ Options specific to Aspeed machines are : * ``spi-model`` to change the SPI Flash model. + * ``uart`` to change the default console device. Most of the machines + use the ``UART5`` device for a boot console, which is mapped on + ``/dev/ttyS4`` under Linux, but it is not always the case. + For instance, to start the ``ast2500-evb`` machine with a different FMC chip and a bigger (64M) SPI chip, use : @@ -129,6 +133,12 @@ FMC chip and a bigger (64M) SPI chip, use : -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f +To change the boot console and use device ``UART3`` (``/dev/ttyS2`` +under Linux), use : + +.. code-block:: bash + + -M ast2500-evb,uart=uart3 Aspeed minibmc family boards (``ast1030-evb``) ================================================================== diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index 3d5488faf7..6c32f674b9 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -43,6 +43,7 @@ struct AspeedMachineState { AspeedSoCState soc; MemoryRegion boot_rom; bool mmio_exec; + uint32_t uart_chosen; char *fmc_model; char *spi_model; }; @@ -331,10 +332,11 @@ static void connect_serial_hds_to_uarts(AspeedMachineState *bmc) AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); AspeedSoCState *s = &bmc->soc; AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; - aspeed_soc_uart_set_chr(s, amc->uart_default, serial_hd(0)); + aspeed_soc_uart_set_chr(s, uart_chosen, serial_hd(0)); for (int i = 1, uart = ASPEED_DEV_UART1; i < sc->uarts_num; i++, uart++) { - if (uart == amc->uart_default) { + if (uart == uart_chosen) { continue; } aspeed_soc_uart_set_chr(s, uart, serial_hd(i)); @@ -1077,6 +1079,35 @@ static void aspeed_set_spi_model(Object *obj, const char *value, Error **errp) bmc->spi_model = g_strdup(value); } +static char *aspeed_get_uart(Object *obj, Error **errp) +{ + AspeedMachineState *bmc = ASPEED_MACHINE(obj); + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); + int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default; + + return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART1 + 1); +} + +static void aspeed_set_uart(Object *obj, const char *value, Error **errp) +{ + AspeedMachineState *bmc = ASPEED_MACHINE(obj); + AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); + AspeedSoCClass *sc = ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); + int val; + + if (sscanf(value, "uart%u", &val) != 1) { + error_setg(errp, "Bad value for \"uart\" property"); + return; + } + + /* The number of UART depends on the SoC */ + if (val < 1 || val > sc->uarts_num) { + error_setg(errp, "\"uart\" should be in range [1 - %d]", sc->uarts_num); + return; + } + bmc->uart_chosen = ASPEED_DEV_UART1 + val - 1; +} + static void aspeed_machine_class_props_init(ObjectClass *oc) { object_class_property_add_bool(oc, "execute-in-place", @@ -1085,6 +1116,10 @@ static void aspeed_machine_class_props_init(ObjectClass *oc) object_class_property_set_description(oc, "execute-in-place", "boot directly from CE0 flash device"); + object_class_property_add_str(oc, "uart", aspeed_get_uart, aspeed_set_uart); + object_class_property_set_description(oc, "uart", + "Change the default UART to \"uartX\""); + object_class_property_add_str(oc, "fmc-model", aspeed_get_fmc_model, aspeed_set_fmc_model); object_class_property_set_description(oc, "fmc-model",
Most of the Aspeed machines use the UART5 device for the boot console, and QEMU connects the first serial Chardev to this SoC device for this purpose. See routine connect_serial_hds_to_uarts(). Nevertheless, some machines use another boot console, such as the fuji, and commit 5d63d0c76c ("hw/arm/aspeed: Allow machine to set UART default") introduced a SoC class attribute 'uart_default' and property to be able to change the boot console device. It was later changed by commit d2b3eaefb4 ("aspeed: Refactor UART init for multi-SoC machines"). The "uart" machine option goes a step further and lets the user define the UART device from the QEMU command line without introducing a new machine definition. For instance, to use device UART3 (mapped on /dev/ttyS2 under Linux) instead of the default UART5, one would use : -M ast2500-evb,uart=uart3 Cc: Abhishek Singh Dagur <abhishek@drut.io> Signed-off-by: Cédric Le Goater <clg@kaod.org> --- docs/system/arm/aspeed.rst | 10 ++++++++++ hw/arm/aspeed.c | 39 ++++++++++++++++++++++++++++++++++++-- 2 files changed, 47 insertions(+), 2 deletions(-)