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https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 16:38:53 +09:00
![Simon Glass](/assets/img/avatar_default.png)
The current macro is a misnomer since it does not declare a device directly. Instead, it declares driver_info record which U-Boot uses at runtime to create a device. The distinction seems somewhat minor most of the time, but is becomes quite confusing when we actually want to declare a device, with of-platdata. We are left trying to distinguish between a device which isn't actually device, and a device that is (perhaps an 'instance'?) It seems better to rename this macro to describe what it actually is. The macros is not widely used, since boards should use devicetree to declare devices. Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is declaring a new driver_info record, not a device. Signed-off-by: Simon Glass <sjg@chromium.org>
456 lines
12 KiB
C
456 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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*
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* Common board functions for OMAP3 based boards.
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*
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* (C) Copyright 2004-2008
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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*
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* Derived from Beagle Board and 3430 SDP code by
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <init.h>
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#include <spl.h>
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#include <asm/io.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/mem.h>
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#include <asm/cache.h>
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#include <asm/armv7.h>
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#include <asm/gpio.h>
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#include <asm/omap_common.h>
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#include <linux/compiler.h>
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/* Declarations */
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extern omap3_sysinfo sysinfo;
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#ifndef CONFIG_SYS_L2CACHE_OFF
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static void omap3_invalidate_l2_cache_secure(void);
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#endif
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#if CONFIG_IS_ENABLED(DM_GPIO)
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#if !CONFIG_IS_ENABLED(OF_CONTROL)
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/* Manually initialize GPIO banks when OF_CONTROL doesn't */
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static const struct omap_gpio_plat omap34xx_gpio[] = {
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{ 0, OMAP34XX_GPIO1_BASE },
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{ 1, OMAP34XX_GPIO2_BASE },
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{ 2, OMAP34XX_GPIO3_BASE },
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{ 3, OMAP34XX_GPIO4_BASE },
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{ 4, OMAP34XX_GPIO5_BASE },
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{ 5, OMAP34XX_GPIO6_BASE },
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};
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U_BOOT_DRVINFOS(omap34xx_gpios) = {
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{ "gpio_omap", &omap34xx_gpio[0] },
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{ "gpio_omap", &omap34xx_gpio[1] },
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{ "gpio_omap", &omap34xx_gpio[2] },
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{ "gpio_omap", &omap34xx_gpio[3] },
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{ "gpio_omap", &omap34xx_gpio[4] },
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{ "gpio_omap", &omap34xx_gpio[5] },
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};
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#endif
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#else
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static const struct gpio_bank gpio_bank_34xx[6] = {
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{ (void *)OMAP34XX_GPIO1_BASE },
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{ (void *)OMAP34XX_GPIO2_BASE },
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{ (void *)OMAP34XX_GPIO3_BASE },
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{ (void *)OMAP34XX_GPIO4_BASE },
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{ (void *)OMAP34XX_GPIO5_BASE },
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{ (void *)OMAP34XX_GPIO6_BASE },
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};
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const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
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#endif
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/******************************************************************************
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* Routine: secure_unlock
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* Description: Setup security registers for access
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* (GP Device only)
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*****************************************************************************/
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void secure_unlock_mem(void)
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{
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struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
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struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
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struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
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struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
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struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;
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/* Protection Module Register Target APE (PM_RT) */
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writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
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writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
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writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
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writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
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writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
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writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
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writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
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writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
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writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
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writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
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writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
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/* IVA Changes */
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writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
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writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
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writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
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/* SDRC region 0 public */
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writel(UNLOCK_1, &sms_base->rg_att0);
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}
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/******************************************************************************
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* Routine: secureworld_exit()
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* Description: If chip is EMU and boot type is external
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* configure secure registers and exit secure world
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* general use.
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*****************************************************************************/
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void secureworld_exit(void)
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{
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unsigned long i;
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/* configure non-secure access control register */
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__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
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/* enabling co-processor CP10 and CP11 accesses in NS world */
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__asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
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/*
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* allow allocation of locked TLBs and L2 lines in NS world
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* allow use of PLE registers in NS world also
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*/
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__asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
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__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
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/* Enable ASA in ACR register */
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__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
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__asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
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__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
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/* Exiting secure world */
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__asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
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__asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
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__asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
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}
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/******************************************************************************
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* Routine: try_unlock_sram()
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* Description: If chip is GP/EMU(special) type, unlock the SRAM for
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* general use.
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*****************************************************************************/
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void try_unlock_memory(void)
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{
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int mode;
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int in_sdram = is_running_in_sdram();
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/*
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* if GP device unlock device SRAM for general use
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* secure code breaks for Secure/Emulation device - HS/E/T
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*/
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mode = get_device_type();
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if (mode == GP_DEVICE)
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secure_unlock_mem();
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/*
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* If device is EMU and boot is XIP external booting
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* Unlock firewalls and disable L2 and put chip
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* out of secure world
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*
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* Assuming memories are unlocked by the demon who put us in SDRAM
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*/
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if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
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&& (!in_sdram)) {
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secure_unlock_mem();
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secureworld_exit();
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}
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return;
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}
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void early_system_init(void)
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{
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hw_data_init();
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}
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/******************************************************************************
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* Routine: s_init
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* Description: Does early system init of muxing and clocks.
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* - Called path is with SRAM stack.
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*****************************************************************************/
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void s_init(void)
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{
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watchdog_init();
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early_system_init();
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try_unlock_memory();
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#ifndef CONFIG_SYS_L2CACHE_OFF
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/* Invalidate L2-cache from secure mode */
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omap3_invalidate_l2_cache_secure();
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#endif
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set_muxconf_regs();
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sdelay(100);
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prcm_init();
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per_clocks_enable();
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#ifdef CONFIG_USB_EHCI_OMAP
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ehci_clocks_enable();
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#endif
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}
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#ifdef CONFIG_SPL_BUILD
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void board_init_f(ulong dummy)
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{
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early_system_init();
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mem_init();
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/*
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* Save the boot parameters passed from romcode.
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* We cannot delay the saving further than this,
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* to prevent overwrites.
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*/
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save_omap_boot_params();
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}
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#endif
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/*
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* Routine: misc_init_r
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* Description: A basic misc_init_r that just displays the die ID
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*/
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int __weak misc_init_r(void)
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{
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omap_die_id_display();
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return 0;
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}
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/******************************************************************************
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* Routine: wait_for_command_complete
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* Description: Wait for posting to finish on watchdog
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*****************************************************************************/
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static void wait_for_command_complete(struct watchdog *wd_base)
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{
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int pending = 1;
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do {
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pending = readl(&wd_base->wwps);
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} while (pending);
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}
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/******************************************************************************
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* Routine: watchdog_init
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* Description: Shut down watch dogs
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*****************************************************************************/
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void watchdog_init(void)
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{
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struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
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struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
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/*
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* There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
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* either taken care of by ROM (HS/EMU) or not accessible (GP).
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* We need to take care of WD2-MPU or take a PRCM reset. WD3
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* should not be running and does not generate a PRCM reset.
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*/
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setbits_le32(&prcm_base->fclken_wkup, 0x20);
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setbits_le32(&prcm_base->iclken_wkup, 0x20);
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wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
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writel(WD_UNLOCK1, &wd2_base->wspr);
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wait_for_command_complete(wd2_base);
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writel(WD_UNLOCK2, &wd2_base->wspr);
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}
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/******************************************************************************
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* Dummy function to handle errors for EABI incompatibility
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*****************************************************************************/
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void abort(void)
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{
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}
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#if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
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/******************************************************************************
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* OMAP3 specific command to switch between NAND HW and SW ecc
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*****************************************************************************/
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static int do_switch_ecc(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int hw, strength = 1;
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if (argc < 2 || argc > 3)
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goto usage;
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if (strncmp(argv[1], "hw", 2) == 0) {
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hw = 1;
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if (argc == 3) {
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if (strncmp(argv[2], "bch8", 4) == 0)
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strength = 8;
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else if (strncmp(argv[2], "bch16", 5) == 0)
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strength = 16;
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else if (strncmp(argv[2], "hamming", 7) != 0)
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goto usage;
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}
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} else if (strncmp(argv[1], "sw", 2) == 0) {
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hw = 0;
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if (argc == 3) {
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if (strncmp(argv[2], "bch8", 4) == 0)
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strength = 8;
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else if (strncmp(argv[2], "hamming", 7) != 0)
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goto usage;
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}
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} else {
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goto usage;
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}
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return -omap_nand_switch_ecc(hw, strength);
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usage:
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printf ("Usage: nandecc %s\n", cmdtp->usage);
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return 1;
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}
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U_BOOT_CMD(
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nandecc, 3, 1, do_switch_ecc,
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"switch OMAP3 NAND ECC calculation algorithm",
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"hw [hamming|bch8|bch16] - Switch between NAND hardware 1-bit hamming"
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" and 8-bit/16-bit BCH\n"
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" ecc calculation (second parameter may"
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" be omitted).\n"
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"nandecc sw - Switch to NAND software ecc algorithm."
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);
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#endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
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#ifdef CONFIG_DISPLAY_BOARDINFO
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/**
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* Print board information
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*/
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int checkboard (void)
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{
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char *mem_s ;
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if (is_mem_sdr())
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mem_s = "mSDR";
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else
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mem_s = "LPDDR";
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printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
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sysinfo.nand_string);
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return 0;
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}
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#endif /* CONFIG_DISPLAY_BOARDINFO */
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static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
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{
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u32 i, num_params = *parameters;
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u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
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/*
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* copy the parameters to an un-cached area to avoid coherency
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* issues
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*/
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for (i = 0; i < num_params; i++) {
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__raw_writel(*parameters, sram_scratch_space);
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parameters++;
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sram_scratch_space++;
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}
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/* Now make the PPA call */
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do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
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}
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void __weak omap3_set_aux_cr_secure(u32 acr)
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{
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struct emu_hal_params emu_romcode_params;
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emu_romcode_params.num_params = 1;
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emu_romcode_params.param1 = acr;
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omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
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(u32 *)&emu_romcode_params);
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}
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void v7_arch_cp15_set_l2aux_ctrl(u32 l2auxctrl, u32 cpu_midr,
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u32 cpu_rev_comb, u32 cpu_variant,
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u32 cpu_rev)
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{
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if (get_device_type() == GP_DEVICE)
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omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_L2ACR, l2auxctrl);
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/* L2 Cache Auxiliary Control Register is not banked */
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}
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void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
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u32 cpu_variant, u32 cpu_rev)
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{
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/* Write ACR - affects secure banked bits */
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if (get_device_type() == GP_DEVICE)
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omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_ACR, acr);
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else
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omap3_set_aux_cr_secure(acr);
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/* Write ACR - affects non-secure banked bits - some erratas need it */
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asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
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}
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#ifndef CONFIG_SYS_L2CACHE_OFF
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static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
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{
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u32 acr;
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/* Read ACR */
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asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
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acr &= ~clear_bits;
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acr |= set_bits;
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v7_arch_cp15_set_acr(acr, 0, 0, 0, 0);
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}
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/* Invalidate the entire L2 cache from secure mode */
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static void omap3_invalidate_l2_cache_secure(void)
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{
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if (get_device_type() == GP_DEVICE) {
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omap_smc1(OMAP3_GP_ROMCODE_API_L2_INVAL, 0);
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} else {
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struct emu_hal_params emu_romcode_params;
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emu_romcode_params.num_params = 1;
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emu_romcode_params.param1 = 0;
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omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
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(u32 *)&emu_romcode_params);
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}
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}
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void v7_outer_cache_enable(void)
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{
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/*
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* Set L2EN
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* On some revisions L2EN bit is banked on some revisions it's not
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* No harm in setting both banked bits(in fact this is required
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* by an erratum)
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*/
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omap3_update_aux_cr(0x2, 0);
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}
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void omap3_outer_cache_disable(void)
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{
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/*
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* Clear L2EN
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* On some revisions L2EN bit is banked on some revisions it's not
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* No harm in clearing both banked bits(in fact this is required
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* by an erratum)
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*/
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omap3_update_aux_cr(0, 0x2);
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}
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#endif /* !CONFIG_SYS_L2CACHE_OFF */
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