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1. 8250 serila family (OFW, PCI, DWC, early) 2. Virtual serial (by graphic and input) 3. HVC early serial 4. ARM PL011 serial Signed-off-by: GuEe-GUI <2991707448@qq.com>
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-02-25 GuEe-GUI the first version
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*/
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#include "psf.h"
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static void psf_read_header(struct psf_font *psf)
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{
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if (psf->header1->magic[0] == PSF1_MAGIC0 &&
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psf->header1->magic[1] == PSF1_MAGIC1)
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{
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psf->font_map = (void *)&psf->header1[1];
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psf->type = PSF_TYPE_1;
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if (psf->header1->mode & PSF1_MODE512)
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{
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psf->count = 512;
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}
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else
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{
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psf->count = 256;
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}
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psf->size = psf->header1->charsize;
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psf->height = psf->header1->charsize;
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psf->width = 8;
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}
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else if (psf->header2->magic[0] == PSF2_MAGIC0 &&
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psf->header2->magic[1] == PSF2_MAGIC1 &&
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psf->header2->magic[2] == PSF2_MAGIC2 &&
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psf->header2->magic[3] == PSF2_MAGIC3)
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{
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psf->font_map = (void *)&psf->header2[1];
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psf->type = PSF_TYPE_2;
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psf->count = psf->header2->length;
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psf->size = psf->header2->charsize;
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psf->height = psf->header2->height;
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psf->width = psf->header2->width;
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}
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else
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{
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psf->type = PSF_TYPE_UNKNOW;
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}
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psf->glyph = psf->height * psf->width;
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}
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rt_err_t psf_initialize(const void *psf_data, struct psf_font *out_psf)
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{
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struct psf_font *psf = out_psf;
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psf->raw_data = psf_data;
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psf_read_header(psf);
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if (psf->type == PSF_TYPE_UNKNOW)
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{
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return -RT_ENOSYS;
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}
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return RT_EOK;
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}
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rt_err_t psf_parse(struct psf_font *psf, const rt_uint8_t *font_data,
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rt_uint8_t *tmpglyph, rt_uint32_t color_size,
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rt_uint32_t foreground, rt_uint32_t background)
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{
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rt_uint8_t *font = (void *)font_data, *map = (void *)psf->font_map;
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psf->font_data = font_data;
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for (int n = 0; n < psf->count; ++n, map += psf->size)
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{
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rt_memcpy(tmpglyph, map, psf->size);
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for (int i = 0; i < psf->size; ++i)
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{
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for (int j = 0; j < 8; ++j)
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{
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if (i % (psf->size / psf->height) * 8 + j < psf->width)
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{
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if (tmpglyph[i] & 0x80)
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{
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rt_memcpy(font, &foreground, color_size);
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}
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else
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{
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rt_memcpy(font, &background, color_size);
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}
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font += color_size;
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}
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tmpglyph[i] = tmpglyph[i] << 1;
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}
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}
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}
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return RT_EOK;
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}
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