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holly: add core_param_init, ta_fifo_texture_memory_transfer

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This commit is contained in:
Zack Buhman 2025-07-16 13:00:36 -05:00
parent da7d77dd7e
commit 119592bcbe
3 changed files with 96 additions and 0 deletions
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23
holly/core.cpp
View File

@ -53,6 +53,29 @@ void core_init()
| fpu_param_cfg::pointer_first_burst_size(7); // half of pointer burst size(?)
}
void core_param_init(uint32_t region_array_start,
uint32_t isp_tsp_parameters_start,
uint32_t background_start,
uint32_t framebuffer_width)
{
holly.REGION_BASE = region_array_start;
holly.PARAM_BASE = isp_tsp_parameters_start;
uint32_t background_offset = background_start - isp_tsp_parameters_start;
holly.ISP_BACKGND_T
= isp_backgnd_t::tag_address(background_offset / 4)
| isp_backgnd_t::tag_offset(0)
| isp_backgnd_t::skip(1);
holly.ISP_BACKGND_D = _i(1.f/100000.f);
holly.FB_W_CTRL
= fb_w_ctrl::fb_packmode::_565_rgb_16bit;
const int bytes_per_pixel = 2;
holly.FB_W_LINESTRIDE = (framebuffer_width * bytes_per_pixel) / 8;
}
void core_start_render(uint32_t frame_address,
uint32_t frame_width // in pixels
)

5
holly/core.hpp
View File

@ -4,6 +4,11 @@
void core_init();
void core_param_init(uint32_t region_array_start,
uint32_t isp_tsp_parameters_start,
uint32_t background_start,
uint32_t framebuffer_width);
void core_start_render(uint32_t frame_address,
uint32_t frame_width); // in pixels

68
holly/ta_fifo_texture_memory_transfer.hpp Normal file
View File

@ -0,0 +1,68 @@
#pragma once
#include "sh7091/store_queue.hpp"
#include "memorymap.hpp"
namespace ta_fifo_texture_memory_transfer {
static inline void copy(void * out_addr,
const void * src,
int length)
{
uint32_t out = reinterpret_cast<uint32_t>(out_addr);
sh7091.CCN.QACR0 = ((out >> 24) & 0b11100);
sh7091.CCN.QACR1 = ((out >> 24) & 0b11100);
volatile uint32_t * base = &store_queue[(out & 0x03ffffe0) / 4];
const uint32_t * src32 = reinterpret_cast<const uint32_t *>(src);
length = (length + 31) & ~31; // round up to nearest multiple of 32
while (length > 0) {
base[0] = src32[0];
base[1] = src32[1];
base[2] = src32[2];
base[3] = src32[3];
base[4] = src32[4];
base[5] = src32[5];
base[6] = src32[6];
base[7] = src32[7];
asm volatile ("pref @%0"
: // output
: "r" (&base[0]) // input
: "memory");
length -= 32;
base += 8;
src32 += 8;
}
}
static inline void zeroize(void * out_addr,
int length,
const uint32_t value)
{
uint32_t out = reinterpret_cast<uint32_t>(out_addr);
sh7091.CCN.QACR0 = ((out >> 24) & 0b11100);
sh7091.CCN.QACR1 = ((out >> 24) & 0b11100);
volatile uint32_t * base = &store_queue[(out & 0x03ffffe0) / 4];
length = (length + 31) & ~31; // round up to nearest multiple of 32
while (length > 0) {
base[0] = value;
base[1] = value;
base[2] = value;
base[3] = value;
base[4] = value;
base[5] = value;
base[6] = value;
base[7] = value;
asm volatile ("pref @%0"
: // output
: "r" (&base[0]) // input
: "memory");
length -= 32;
base += 8;
}
}
}