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[S390] setup: simplify setup_resources()

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Simplify setup_resources() and make it more generic. That way it is
easier to add additional resources.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2011-03-23 10:15:59 +01:00 committed by Martin Schwidefsky
parent d0d2e31af6
commit 71189284e6
1 changed files with 34 additions and 46 deletions
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80
arch/s390/kernel/setup.c
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@ -102,16 +102,6 @@ EXPORT_SYMBOL(lowcore_ptr);
#include <asm/setup.h>
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
};
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
};
/*
* condev= and conmode= setup parameter.
*/
@ -436,11 +426,25 @@ setup_lowcore(void)
lowcore_ptr[0] = lc;
}
static void __init
setup_resources(void)
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
};
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
};
static struct resource __initdata *standard_resources[] = {
&code_resource,
&data_resource,
};
static void __init setup_resources(void)
{
struct resource *res, *sub_res;
int i;
struct resource *res, *std_res, *sub_res;
int i, j;
code_resource.start = (unsigned long) &_text;
code_resource.end = (unsigned long) &_etext - 1;
@ -450,7 +454,7 @@ setup_resources(void)
for (i = 0; i < MEMORY_CHUNKS; i++) {
if (!memory_chunk[i].size)
continue;
res = alloc_bootmem_low(sizeof(struct resource));
res = alloc_bootmem_low(sizeof(*res));
res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
switch (memory_chunk[i].type) {
case CHUNK_READ_WRITE:
@ -464,40 +468,24 @@ setup_resources(void)
res->name = "reserved";
}
res->start = memory_chunk[i].addr;
res->end = memory_chunk[i].addr + memory_chunk[i].size - 1;
res->end = res->start + memory_chunk[i].size - 1;
request_resource(&iomem_resource, res);
if (code_resource.start >= res->start &&
code_resource.start <= res->end &&
code_resource.end > res->end) {
sub_res = alloc_bootmem_low(sizeof(struct resource));
memcpy(sub_res, &code_resource,
sizeof(struct resource));
sub_res->end = res->end;
code_resource.start = res->end + 1;
request_resource(res, sub_res);
for (j = 0; j < ARRAY_SIZE(standard_resources); j++) {
std_res = standard_resources[j];
if (std_res->start < res->start ||
std_res->start > res->end)
continue;
if (std_res->end > res->end) {
sub_res = alloc_bootmem_low(sizeof(*sub_res));
*sub_res = *std_res;
sub_res->end = res->end;
std_res->start = res->end + 1;
request_resource(res, sub_res);
} else {
request_resource(res, std_res);
}
}
if (code_resource.start >= res->start &&
code_resource.start <= res->end &&
code_resource.end <= res->end)
request_resource(res, &code_resource);
if (data_resource.start >= res->start &&
data_resource.start <= res->end &&
data_resource.end > res->end) {
sub_res = alloc_bootmem_low(sizeof(struct resource));
memcpy(sub_res, &data_resource,
sizeof(struct resource));
sub_res->end = res->end;
data_resource.start = res->end + 1;
request_resource(res, sub_res);
}
if (data_resource.start >= res->start &&
data_resource.start <= res->end &&
data_resource.end <= res->end)
request_resource(res, &data_resource);
}
}