u-boot/arch/arm/mach-omap2/omap3/board.c

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