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arm: mvebu: Espressobin: Set environment variable fdtfile

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Required for the generic distro mechanism.

Linux ships with 4 variants:
marvell/armada-3720-espressobin-v7-emmc.dtb
marvell/armada-3720-espressobin-v7.dtb
marvell/armada-3720-espressobin-emmc.dtb
marvell/armada-3720-espressobin.dtb

Use available information to determine the appropriate filename.

Fixes booting GRUB EFI arm64 on Fedora.

Reported-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: Andre Heider <a.heider@gmail.com>
This commit is contained in:
Andre Heider 2020-09-11 06:35:10 +02:00 committed by Stefan Roese
parent 5a3f5e61ca
commit 68e32e3443
2 changed files with 48 additions and 0 deletions
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47
board/Marvell/mvebu_armada-37xx/board.c
View file

@ -5,6 +5,7 @@
#include <common.h>
#include <dm.h>
#include <env.h>
#include <i2c.h>
#include <init.h>
#include <phy.h>
@ -50,6 +51,22 @@ DECLARE_GLOBAL_DATA_PTR;
#define MVEBU_G2_SMI_PHY_CMD_REG (24)
#define MVEBU_G2_SMI_PHY_DATA_REG (25)
/*
* Memory Controller Registers
*
* Assembled based on public information:
* https://gitlab.nic.cz/turris/mox-boot-builder/-/blob/master/wtmi/main.c#L332-336
* https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell/blob/mv_ddr-armada-18.12/drivers/mv_ddr_mc6.h#L309-L332
*
* And checked against the written register values for the various topologies:
* https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell/blob/mv_ddr-armada-atf-mainline/a3700/mv_ddr_tim.h
*/
#define A3700_CH0_MC_CTRL2_REG MVEBU_REGISTER(0x002c4)
#define A3700_MC_CTRL2_SDRAM_TYPE_MASK 0xf
#define A3700_MC_CTRL2_SDRAM_TYPE_OFFS 4
#define A3700_MC_CTRL2_SDRAM_TYPE_DDR3 2
#define A3700_MC_CTRL2_SDRAM_TYPE_DDR4 3
int board_early_init_f(void)
{
return 0;
@ -63,6 +80,36 @@ int board_init(void)
return 0;
}
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
bool ddr4, emmc;
if (env_get("fdtfile"))
return 0;
if (!of_machine_is_compatible("globalscale,espressobin"))
return 0;
/* If the memory controller has been configured for DDR4, we're running on v7 */
ddr4 = ((readl(A3700_CH0_MC_CTRL2_REG) >> A3700_MC_CTRL2_SDRAM_TYPE_OFFS)
& A3700_MC_CTRL2_SDRAM_TYPE_MASK) == A3700_MC_CTRL2_SDRAM_TYPE_DDR4;
emmc = of_machine_is_compatible("globalscale,espressobin-emmc");
if (ddr4 && emmc)
env_set("fdtfile", "marvell/armada-3720-espressobin-v7-emmc.dtb");
else if (ddr4)
env_set("fdtfile", "marvell/armada-3720-espressobin-v7.dtb");
else if (emmc)
env_set("fdtfile", "marvell/armada-3720-espressobin-emmc.dtb");
else
env_set("fdtfile", "marvell/armada-3720-espressobin.dtb");
return 0;
}
#endif
/* Board specific AHCI / SATA enable code */
int board_ahci_enable(void)
{

1
configs/mvebu_espressobin-88f3720_defconfig
View file

@ -85,3 +85,4 @@ CONFIG_USB_ETHER_SMSC95XX=y
CONFIG_SHA1=y
CONFIG_SHA256=y
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_BOARD_LATE_INIT=y