diff options
Diffstat (limited to 'board/Marvell/mvebu_armada-37xx/board.c')
| -rw-r--r-- | board/Marvell/mvebu_armada-37xx/board.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/board/Marvell/mvebu_armada-37xx/board.c b/board/Marvell/mvebu_armada-37xx/board.c index 7b9c3223ed..eacee15cb3 100644 --- a/board/Marvell/mvebu_armada-37xx/board.c +++ b/board/Marvell/mvebu_armada-37xx/board.c @@ -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) { |