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ppc4xx_sdram: Get rid of the init RAM hack

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The do_init parameter of ppc4xx_sdram_init() is used to map memory
regions that is normally done by the firmware by programming the SDRAM
controller. Do this from board code emulating what firmware would do
when booting a kernel directly from -kernel without a firmware so we
can get rid of this do_init hack.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <d6c44c870befa1a075e21f1a59926dcdaff63f6b.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 14:27:52 +02:00 • committed by Daniel Henrique Barboza
parent 8626982301
commit 68b9a2e38d
6 changed files with 15 additions and 14 deletions
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12
hw/ppc/ppc4xx_devs.c
View file

@ -350,8 +350,7 @@ static void sdram_reset(void *opaque)
void ppc4xx_sdram_init(CPUPPCState *env, qemu_irq irq, int nbanks,
MemoryRegion *ram_memories,
hwaddr *ram_bases,
hwaddr *ram_sizes,
int do_init)
hwaddr *ram_sizes)
{
ppc4xx_sdram_t *sdram;
int i;
@ -369,9 +368,12 @@ void ppc4xx_sdram_init(CPUPPCState *env, qemu_irq irq, int nbanks,
sdram, &dcr_read_sdram, &dcr_write_sdram);
ppc_dcr_register(env, SDRAM0_CFGDATA,
sdram, &dcr_read_sdram, &dcr_write_sdram);
if (do_init) {
sdram_map_bcr(sdram);
}
}
void ppc4xx_sdram_enable(CPUPPCState *env)
{
ppc_dcr_write(env->dcr_env, SDRAM0_CFGADDR, 0x20);
ppc_dcr_write(env->dcr_env, SDRAM0_CFGDATA, 0x80000000);
}
/*