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more configuratble blit rom

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This commit is contained in:
Romain Dolbeau 2021-10-30 11:53:09 +02:00
parent 417095d2c0
commit 6f04a9bd73
2 changed files with 14 additions and 5 deletions
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10
sbus-to-ztex-gateware-migen/blit.c
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@ -5,8 +5,14 @@
*/
#define HRES 1280 // FIXME : should be generated
#ifndef HRES
#define HRES 1280
#warning "Using default HRES"
#endif
#ifndef VRES
#define VRES 1024
#warning "Using default VRES"
#endif
#define BASE_FB 0x8FE00000 // FIXME : should be generated ; 2+ MiB of SDRAM as framebuffer
#define BASE_ROM 0x00410000 // FIXME : should be generated ; 4-64 KiB of Wishbone ROM ? ; also in the LDS file ; also in the Vex config
@ -369,7 +375,7 @@ struct cg6_fbc {
void from_reset(void) __attribute__ ((noreturn)); // nothrow,
static inline void flush_cache(void) {
//asm volatile(".word 0x0000500F\n"); // flush the Dcache so that we get updated data
asm volatile(".word 0x0000500F\n"); // flush the Dcache so that we get updated data
}
typedef unsigned int unsigned_param_type;

9
sbus-to-ztex-gateware-migen/blit.sh
View File

@ -1,5 +1,8 @@
#!/bin/bash -x
HRES=${1:-1280}
VRES=${2:-1024}
GCCDIR=~/LITEX/riscv64-unknown-elf-gcc-10.1.0-2020.08.2-x86_64-linux-ubuntu14
GCCPFX=riscv64-unknown-elf-
GCCLINK=${GCCDIR}/bin/${GCCPFX}gcc
@ -17,8 +20,8 @@ OPT=-Os #-fno-inline
ARCH=rv32i_zba_zbb_zbt
if test "x$1" != "xASM"; then
$GCC $OPT -S -o blit.s -march=$ARCH -mabi=ilp32 -mstrict-align -fno-builtin-memset -nostdlib -ffreestanding -nostartfiles blit.c
$GCC $OPT -S -o blit.s -DHRES=${HRES} -DVRES=${VRES} -march=$ARCH -mabi=ilp32 -mstrict-align -fno-builtin-memset -nostdlib -ffreestanding -nostartfiles blit.c
fi
$GCC $OPT -c -o blit.o -march=$ARCH -mabi=ilp32 -mstrict-align -fno-builtin-memset -nostdlib -ffreestanding -nostartfiles blit.s &&
$GCCLINK $OPT -o blit -march=$ARCH -mabi=ilp32 -T blit.lds -nostartfiles blit.o &&
$GCC $OPT -c -o blit.o -DHRES=${HRES} -DVRES=${VRES} -march=$ARCH -mabi=ilp32 -mstrict-align -fno-builtin-memset -nostdlib -ffreestanding -nostartfiles blit.s &&
$GCCLINK $OPT -o blit -DHRES=${HRES} -DVRES=${VRES} -march=$ARCH -mabi=ilp32 -T blit.lds -nostartfiles blit.o &&
$OBJCOPY -O binary -j .text -j .rodata blit blit.raw