Unfortunately, the memory size detect does not work properly. Let's use the standard get_ram_size() function in the preloader and just reinitialize the memory if it returns 256MB.
Signed-off-by: Alexander Shiyan <[email protected]> --- arch/arm/boards/myirtech-x335x/lowlevel.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/arch/arm/boards/myirtech-x335x/lowlevel.c b/arch/arm/boards/myirtech-x335x/lowlevel.c index e867a0be7d..c43761ca23 100644 --- a/arch/arm/boards/myirtech-x335x/lowlevel.c +++ b/arch/arm/boards/myirtech-x335x/lowlevel.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0+ */ /* SPDX-FileCopyrightText: Alexander Shiyan <[email protected]> */ +#include <common.h> #include <io.h> #include <asm/barebox-arm-head.h> #include <asm/barebox-arm.h> @@ -41,12 +42,13 @@ static const struct am33xx_cmd_control ddr3_cmd_ctrl = { /* CPU module contains 512MB (2*256MB) DDR3 SDRAM (2*128MB compatible), * so we configure EMIF for 512MB then detect real size of memory. */ -static const struct am33xx_emif_regs ddr3_regs = { +static struct am33xx_emif_regs ddr3_regs = { .emif_read_latency = 0x00100007, .emif_tim1 = 0x0aaad4db, .emif_tim2 = 0x266b7fda, .emif_tim3 = 0x501f867f, .zq_config = 0x50074be4, + /* MT41K256M8DA */ .sdram_config = 0x61c05332, .sdram_config2 = 0x00, .sdram_ref_ctrl = 0xc30, @@ -87,6 +89,12 @@ ENTRY_FUNCTION(start_am33xx_myirtech_sram, bootinfo, r1, r2) am335x_sdram_init(0x18b, &ddr3_cmd_ctrl, &ddr3_regs, &ddr3_data); + if (get_ram_size((void *)AM33XX_DRAM_ADDR_SPACE_START, SZ_512M) < SZ_512M) { + /* MT41K128M8DA */ + ddr3_regs.sdram_config = 0x61c04ab2; + am335x_sdram_init(0x18b, &ddr3_cmd_ctrl, &ddr3_regs, &ddr3_data); + } + if (IS_ENABLED(CONFIG_DEBUG_LL)) { am33xx_uart_soft_reset(IOMEM(AM33XX_UART0_BASE)); am33xx_enable_uart0_pin_mux(); @@ -94,22 +102,16 @@ ENTRY_FUNCTION(start_am33xx_myirtech_sram, bootinfo, r1, r2) putc_ll('>'); } - barebox_arm_entry(AM33XX_DRAM_ADDR_SPACE_START, SZ_256M, fdt); + am335x_barebox_entry(fdt); } ENTRY_FUNCTION(start_am33xx_myirtech_sdram, r0, r1, r2) { void *fdt; - u32 sdram_size; fdt = __dtb_z_am335x_myirtech_myd_start; fdt += get_runtime_offset(); - /* Detect 256M/512M module variant */ - __raw_writel(SZ_512M, AM33XX_DRAM_ADDR_SPACE_START + SZ_256M); - __raw_writel(SZ_256M, AM33XX_DRAM_ADDR_SPACE_START + 0); - sdram_size = __raw_readl(AM33XX_DRAM_ADDR_SPACE_START + SZ_256M); - - barebox_arm_entry(AM33XX_DRAM_ADDR_SPACE_START, sdram_size, fdt); + am335x_barebox_entry(fdt); } -- 2.32.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
