diff options
Diffstat (limited to 'arch/arm/cpu/armv7/socfpga')
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/lowlevel_init.S | 45 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/reset_manager.c | 24 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/spl.c | 61 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/system_manager.c | 9 |
5 files changed, 94 insertions, 46 deletions
diff --git a/arch/arm/cpu/armv7/socfpga/Makefile b/arch/arm/cpu/armv7/socfpga/Makefile index 8b6e108c42..7524ef90e4 100644 --- a/arch/arm/cpu/armv7/socfpga/Makefile +++ b/arch/arm/cpu/armv7/socfpga/Makefile @@ -7,7 +7,6 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y := lowlevel_init.o obj-y += misc.o timer.o reset_manager.o system_manager.o clock_manager.o \ fpga_manager.o obj-$(CONFIG_SPL_BUILD) += spl.o freeze_controller.o scan_manager.o diff --git a/arch/arm/cpu/armv7/socfpga/lowlevel_init.S b/arch/arm/cpu/armv7/socfpga/lowlevel_init.S deleted file mode 100644 index b4d0627871..0000000000 --- a/arch/arm/cpu/armv7/socfpga/lowlevel_init.S +++ /dev/null @@ -1,45 +0,0 @@ -/* - * Copyright (C) 2012 Altera Corporation <www.altera.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <config.h> - -/* Set up the platform, once the cpu has been initialized */ -.globl lowlevel_init -lowlevel_init: - - /* Remap */ -#ifdef CONFIG_SPL_BUILD - /* - * SPL : configure the remap (L3 NIC-301 GPV) - * so the on-chip RAM at lower memory instead ROM. - */ - ldr r0, =SOCFPGA_L3REGS_ADDRESS - mov r1, #0x19 - str r1, [r0] -#else - /* - * U-Boot : configure the remap (L3 NIC-301 GPV) - * so the SDRAM at lower memory instead on-chip RAM. - */ - ldr r0, =SOCFPGA_L3REGS_ADDRESS - mov r1, #0x2 - str r1, [r0] - - /* Private components security */ - - /* - * U-Boot : configure private timer, global timer and cpu - * component access as non secure for kernel stage (as required - * by kernel) - */ - mrc p15,4,r0,c15,c0,0 - add r1, r0, #0x54 - ldr r2, [r1] - orr r2, r2, #0xff - orr r2, r2, #0xf00 - str r2, [r1] -#endif /* #ifdef CONFIG_SPL_BUILD */ - mov pc, lr diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c b/arch/arm/cpu/armv7/socfpga/reset_manager.c index 25921e76c4..45b352bdfc 100644 --- a/arch/arm/cpu/armv7/socfpga/reset_manager.c +++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c @@ -113,3 +113,27 @@ void socfpga_spim_enable(void) clrbits_le32(reset, (1 << RSTMGR_PERMODRST_SPIM0_LSB) | (1 << RSTMGR_PERMODRST_SPIM1_LSB)); } + +/* Bring UART0 out of reset. */ +void socfpga_uart0_enable(void) +{ + const void *reset = &reset_manager_base->per_mod_reset; + + clrbits_le32(reset, 1 << RSTMGR_PERMODRST_UART0_LSB); +} + +/* Bring SDRAM controller out of reset. */ +void socfpga_sdram_enable(void) +{ + const void *reset = &reset_manager_base->per_mod_reset; + + clrbits_le32(reset, 1 << RSTMGR_PERMODRST_SDR_LSB); +} + +/* Bring OSC1 timer out of reset. */ +void socfpga_osc1timer_enable(void) +{ + const void *reset = &reset_manager_base->per_mod_reset; + + clrbits_le32(reset, 1 << RSTMGR_PERMODRST_OSC1TIMER0_LSB); +} diff --git a/arch/arm/cpu/armv7/socfpga/spl.c b/arch/arm/cpu/armv7/socfpga/spl.c index 6a8c15d91f..f994658452 100644 --- a/arch/arm/cpu/armv7/socfpga/spl.c +++ b/arch/arm/cpu/armv7/socfpga/spl.c @@ -6,6 +6,7 @@ #include <common.h> #include <asm/io.h> +#include <asm/pl310.h> #include <asm/u-boot.h> #include <asm/utils.h> #include <image.h> @@ -15,9 +16,13 @@ #include <asm/arch/freeze_controller.h> #include <asm/arch/clock_manager.h> #include <asm/arch/scan_manager.h> +#include <asm/arch/sdram.h> DECLARE_GLOBAL_DATA_PTR; +static struct pl310_regs *const pl310 = + (struct pl310_regs *)CONFIG_SYS_PL310_BASE; + #define MAIN_VCO_BASE ( \ (CONFIG_HPS_MAINPLLGRP_VCO_DENOM << \ CLKMGR_MAINPLLGRP_VCO_DENOM_OFFSET) | \ @@ -43,6 +48,31 @@ DECLARE_GLOBAL_DATA_PTR; CLKMGR_SDRPLLGRP_VCO_NUMER_OFFSET) \ ) +void board_init_f(ulong dummy) +{ + struct socfpga_system_manager *sysmgr_regs = + (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS; + unsigned long reg; + /* + * First C code to run. Clear fake OCRAM ECC first as SBE + * and DBE might triggered during power on + */ + reg = readl(&sysmgr_regs->eccgrp_ocram); + if (reg & SYSMGR_ECC_OCRAM_SERR) + writel(SYSMGR_ECC_OCRAM_SERR | SYSMGR_ECC_OCRAM_EN, + &sysmgr_regs->eccgrp_ocram); + if (reg & SYSMGR_ECC_OCRAM_DERR) + writel(SYSMGR_ECC_OCRAM_DERR | SYSMGR_ECC_OCRAM_EN, + &sysmgr_regs->eccgrp_ocram); + + memset(__bss_start, 0, __bss_end - __bss_start); + + /* Remap SDRAM to 0x0 */ + writel(0x1, &pl310->pl310_addr_filter_start); + + board_init_r(NULL, 0); +} + u32 spl_boot_device(void) { return BOOT_DEVICE_RAM; @@ -53,6 +83,7 @@ u32 spl_boot_device(void) */ void spl_board_init(void) { + unsigned long sdram_size; #ifndef CONFIG_SOCFPGA_VIRTUAL_TARGET cm_config_t cm_default_cfg = { /* main group */ @@ -144,10 +175,19 @@ void spl_board_init(void) /* freeze all IO banks */ sys_mgr_frzctrl_freeze_req(); + socfpga_sdram_enable(); + socfpga_uart0_enable(); + socfpga_osc1timer_enable(); + + timer_init(); + debug("Reconfigure Clock Manager\n"); /* reconfigure the PLLs */ cm_basic_init(&cm_default_cfg); + /* Enable bootrom to configure IOs. */ + sysmgr_enable_warmrstcfgio(); + /* configure the IOCSR / IO buffer settings */ if (scan_mgr_configure_iocsr()) hang(); @@ -165,4 +205,25 @@ void spl_board_init(void) /* enable console uart printing */ preloader_console_init(); + + if (sdram_mmr_init_full(0xffffffff) != 0) { + puts("SDRAM init failed.\n"); + hang(); + } + + debug("SDRAM: Calibrating PHY\n"); + /* SDRAM calibration */ + if (sdram_calibration_full() == 0) { + puts("SDRAM calibration failed.\n"); + hang(); + } + + sdram_size = sdram_calculate_size(); + debug("SDRAM: %ld MiB\n", sdram_size >> 20); + + /* Sanity check ensure correct SDRAM size specified */ + if (get_ram_size(0, sdram_size) != sdram_size) { + puts("SDRAM size check failed!\n"); + hang(); + } } diff --git a/arch/arm/cpu/armv7/socfpga/system_manager.c b/arch/arm/cpu/armv7/socfpga/system_manager.c index 11f7badbf2..8126e0d43c 100644 --- a/arch/arm/cpu/armv7/socfpga/system_manager.c +++ b/arch/arm/cpu/armv7/socfpga/system_manager.c @@ -66,3 +66,12 @@ void sysmgr_pinmux_init(void) populate_sysmgr_fpgaintf_module(); } + +/* + * This bit allows the bootrom to configure the IOs after a warm reset. + */ +void sysmgr_enable_warmrstcfgio(void) +{ + setbits_le32(&sysmgr_regs->romcodegrp_ctrl, + SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO); +} |