haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

aspeed/smc: autostrap CE0/1 configuration

Browse source 
On the AST2500 SoC, the FMC controller flash type is fixed to SPI for
CE0 and CE1 and 4BYTE mode is autodetected for CE0.

On the AST2400 SoC, the FMC controller flash type and 4BYTE mode are
strapped with register SCU70. We use the default settings from the
palmetto-bmc machine for now.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1483979087-32663-5-git-send-email-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2017-01-20 11:15:07 +00:00 committed by Peter Maydell
parent f248a9dbd0
commit 0707b34dcb
1 changed files with 27 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
hw/ssi/aspeed_smc.c
View file

@ -39,11 +39,14 @@
#define CONF_ENABLE_W2 18
#define CONF_ENABLE_W1 17
#define CONF_ENABLE_W0 16
#define CONF_FLASH_TYPE4 9
#define CONF_FLASH_TYPE3 7
#define CONF_FLASH_TYPE2 5
#define CONF_FLASH_TYPE1 3
#define CONF_FLASH_TYPE0 1
#define CONF_FLASH_TYPE4 8
#define CONF_FLASH_TYPE3 6
#define CONF_FLASH_TYPE2 4
#define CONF_FLASH_TYPE1 2
#define CONF_FLASH_TYPE0 0
#define CONF_FLASH_TYPE_NOR 0x0
#define CONF_FLASH_TYPE_NAND 0x1
#define CONF_FLASH_TYPE_SPI 0x2
/* CE Control Register */
#define R_CE_CTRL (0x04 / 4)
@ -436,6 +439,25 @@ static void aspeed_smc_reset(DeviceState *d)
s->regs[R_SEG_ADDR0 + i] =
aspeed_smc_segment_to_reg(&s->ctrl->segments[i]);
}
/* HW strapping for AST2500 FMC controllers */
if (s->ctrl->segments == aspeed_segments_ast2500_fmc) {
/* flash type is fixed to SPI for CE0 and CE1 */
s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0);
s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1);
/* 4BYTE mode is autodetected for CE0. Let's force it to 1 for
* now */
s->regs[s->r_ce_ctrl] |= (1 << (CTRL_EXTENDED0));
}
/* HW strapping for AST2400 FMC controllers (SCU70). Let's use the
* configuration of the palmetto-bmc machine */
if (s->ctrl->segments == aspeed_segments_fmc) {
s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0);
s->regs[s->r_ce_ctrl] |= (1 << (CTRL_EXTENDED0));
}
}
static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)