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ppc440_sdram: Split off map/unmap of sdram banks for later reuse 

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <23560b6a71682d513f3dd8e9ed3852f51d5eb309.1664021647.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
BALATON Zoltan 2022-09-24 14:27:58 +02:00 committed by Daniel Henrique Barboza
parent 052ae5dcc0
commit 17221012b1
1 changed files with 21 additions and 12 deletions
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33
hw/ppc/ppc440_uc.c
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@ -23,6 +23,7 @@
#include "sysemu/reset.h"
#include "ppc440.h"
#include "qom/object.h"
#include "trace.h"
/*****************************************************************************/
/* L2 Cache as SRAM */
@ -563,26 +564,34 @@ static uint64_t sdram_size(uint32_t bcr)
return size;
}
static void sdram_bank_map(Ppc4xxSdramBank *bank)
{
memory_region_init(&bank->container, NULL, "sdram-container", bank->size);
memory_region_add_subregion(&bank->container, 0, &bank->ram);
memory_region_add_subregion(get_system_memory(), bank->base,
&bank->container);
}
static void sdram_bank_unmap(Ppc4xxSdramBank *bank)
{
memory_region_del_subregion(get_system_memory(), &bank->container);
memory_region_del_subregion(&bank->container, &bank->ram);
object_unparent(OBJECT(&bank->container));
}
static void sdram_set_bcr(ppc440_sdram_t *sdram, int i,
uint32_t bcr, int enabled)
{
if (sdram->bank[i].bcr & 1) {
/* First unmap RAM if enabled */
memory_region_del_subregion(get_system_memory(),
&sdram->bank[i].container);
memory_region_del_subregion(&sdram->bank[i].container,
&sdram->bank[i].ram);
object_unparent(OBJECT(&sdram->bank[i].container));
trace_ppc4xx_sdram_unmap(sdram_base(sdram->bank[i].bcr),
sdram_size(sdram->bank[i].bcr));
sdram_bank_unmap(&sdram->bank[i]);
}
sdram->bank[i].bcr = bcr & 0xffe0ffc1;
if (enabled && (bcr & 1)) {
memory_region_init(&sdram->bank[i].container, NULL, "sdram-container",
sdram_size(bcr));
memory_region_add_subregion(&sdram->bank[i].container, 0,
&sdram->bank[i].ram);
memory_region_add_subregion(get_system_memory(),
sdram_base(bcr),
&sdram->bank[i].container);
trace_ppc4xx_sdram_map(sdram_base(bcr), sdram_size(bcr));
sdram_bank_map(&sdram->bank[i]);
}
}