On 21/03/2019 10:25, Amit Singh Tomar wrote: > Signed-off-by: Amit Singh Tomar <amittome...@gmail.com>
Apart from the missing commit message: Reviewed-by: Andre Przywara <andre.przyw...@arm.com> Tested-by: Andre Przywara <andre.przyw...@arm.com> Cheers, Andre. > --- > TODO: > * Capture XEN boot info on WIKI. > > Changes since v1: > > * Fixed coding style issue. > * Undone changes in early-printk.txt. > > Changes since RFC: > > * Replaced LDRH with LDR, with this there > is no scattered output on console now. > * Used tbnz instead of tst and b.ne. > * Used AML_ prefix against register names. > --- > xen/arch/arm/arm64/debug-meson.inc | 51 > ++++++++++++++++++++++++++++++++++++++ > 1 file changed, 51 insertions(+) > create mode 100644 xen/arch/arm/arm64/debug-meson.inc > > diff --git a/xen/arch/arm/arm64/debug-meson.inc > b/xen/arch/arm/arm64/debug-meson.inc > new file mode 100644 > index 0000000..01b70f0 > --- /dev/null > +++ b/xen/arch/arm/arm64/debug-meson.inc > @@ -0,0 +1,51 @@ > +/* > + * xen/arch/arm/arm64/debug-meson.inc > + * > + * MESON specific debug code. > + * > + * Copyright (c) 2019, Amit Singh Tomar <amittome...@gmail.com>. > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms and conditions of the GNU General Public > + * License, version 2, as published by the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + * General Public License for more details. > + * > + * You should have received a copy of the GNU General Public > + * License along with this program; If not, see > <http://www.gnu.org/licenses/>. > + */ > + > +#define AML_UART_WFIFO_REG 0x00 > +#define AML_UART_STATUS_REG 0x0c > + > +#define AML_UART_TX_FIFO_FULL 21 > + > +/* > + * MESON UART wait UART to be ready to transmit > + * xb: register which contains the UART base address > + * c: scratch register > + */ > +.macro early_uart_ready xb c > +1: > + ldr w\c, [\xb, #AML_UART_STATUS_REG] /* status register */ > + tbnz w\c, #AML_UART_TX_FIFO_FULL, 1b /* Check TXFIFO FULL > bit */ > +.endm > + > +/* > + * MESON UART transmit character > + * xb: register which contains the UART base address > + * wt: register which contains the character to transmit > + */ > +.macro early_uart_transmit xb wt > + str \wt, [\xb, #AML_UART_WFIFO_REG] > +.endm > + > +/* > + * Local variables: > + * mode: ASM > + * indent-tabs-mode: nil > + * End: > + */ > _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
