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add cromfs start with bootargs cmd

This commit is contained in:
zhujiale 2024-06-14 09:39:57 +08:00 committed by Rbb666
parent f1832fea24
commit 73727fa06e
1 changed files with 85 additions and 12 deletions
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97
components/drivers/ofw/fdt.c
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@ -565,33 +565,91 @@ rt_err_t rt_fdt_scan_memory(void)
return err;
}
rt_err_t rt_fdt_scan_initrd(rt_uint64_t *ranges)
static rt_err_t fdt_scan_initrd(rt_uint64_t *ranges, const char *name, const char *oem)
{
char tmp_name[32];
rt_err_t err = -RT_EEMPTY;
if (_fdt && ranges)
{
int s_len, e_len;
const fdt32_t *start = RT_NULL, *end = RT_NULL;
int offset = fdt_path_offset(_fdt, "/chosen");
if (offset >= 0)
{
start = fdt_getprop(_fdt, offset, "linux,initrd-start", &s_len);
end = fdt_getprop(_fdt, offset, "linux,initrd-end", &e_len);
int s_len, e_len;
const fdt32_t *start = RT_NULL, *end = RT_NULL;
rt_snprintf(tmp_name, sizeof(tmp_name), "%s,%d-start", oem, name);
start = fdt_getprop(_fdt, offset, tmp_name, &s_len);
rt_snprintf(tmp_name, sizeof(tmp_name), "%s,%d-end", oem, name);
end = fdt_getprop(_fdt, offset, tmp_name, &e_len);
if (start && end)
{
s_len /= sizeof(*start);
e_len /= sizeof(*end);
ranges[0] = rt_fdt_read_number(start, s_len);
ranges[1] = rt_fdt_read_number(end, e_len);
err = RT_EOK;
}
}
if (start && end)
if (err)
{
s_len /= sizeof(*start);
e_len /= sizeof(*end);
int len;
const char *options, *bootargs = fdt_getprop(_fdt, offset, "bootargs", &len);
ranges[0] = rt_fdt_read_number(start, s_len);
ranges[1] = rt_fdt_read_number(end, e_len);
rt_snprintf(tmp_name, sizeof(tmp_name), "%s=", name);
if (bootargs && (options = rt_strstr(bootargs, tmp_name)))
{
rt_uint64_t value;
options += rt_strlen(tmp_name) + sizeof("0x") - 1;
err = RT_EOK;
for (int i = 0; i < 2 && !err; ++i)
{
value = 0;
while (*options && *options != ',' && *options != ' ')
{
/* To lowercase or keep number */
char ch = *options | ' ';
value *= 16;
if (ch >= '0' && ch <= '9')
{
value += ch - '0';
}
else if (ch >= 'a' && ch <= 'f')
{
value += ch - 'a' + 10;
}
else
{
err = -RT_EINVAL;
break;
}
++options;
}
ranges[i] = value;
options += sizeof(",0x") - 1;
}
/* This is initrd's size, convert to initrd's end */
ranges[1] += ranges[0];
}
}
if (!err)
{
commit_memregion("initrd", ranges[0], ranges[1] - ranges[0], RT_TRUE);
err = RT_EOK;
}
}
else if (!ranges)
@ -602,6 +660,21 @@ rt_err_t rt_fdt_scan_initrd(rt_uint64_t *ranges)
return err;
}
rt_err_t rt_fdt_scan_initrd(rt_uint64_t *ranges)
{
rt_err_t err;
err = fdt_scan_initrd(ranges, "cromfs", "rt-thread");
if (err && err == -RT_EEMPTY)
{
err = fdt_scan_initrd(ranges, "initrd", "linux");
}
return err;
}
rt_err_t rt_fdt_model_dump(void)
{
rt_err_t err = RT_EOK;