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// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) "KARO TX28: " fmt
#define DEBUG
#include <common.h>
#include <linux/sizes.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
#include <mach/imx28-regs.h>
#include <mach/init.h>
#include <io.h>
#include <debug_ll.h>
#include <mach/iomux.h>
#include <stmp-device.h>
#include <generated/mach-types.h>
ENTRY_FUNCTION(start_barebox_karo_tx28, r0, r1, r2)
{
barebox_arm_entry(IMX_MEMORY_BASE, SZ_128M, (void *)MACH_TYPE_TX28);
}
static const uint32_t iomux_pads[] = {
/* EMI */
EMI_DATA0, EMI_DATA1, EMI_DATA2, EMI_DATA3, EMI_DATA4, EMI_DATA5,
EMI_DATA6, EMI_DATA7, EMI_DATA8, EMI_DATA9, EMI_DATA10, EMI_DATA11,
EMI_DATA12, EMI_DATA13, EMI_DATA14, EMI_DATA15, EMI_ODT0, EMI_DQM0,
EMI_ODT1, EMI_DQM1, EMI_DDR_OPEN_FB, EMI_CLK, EMI_DSQ0, EMI_DSQ1,
EMI_DDR_OPEN, EMI_A0, EMI_A1, EMI_A2, EMI_A3, EMI_A4, EMI_A5,
EMI_A6, EMI_A7, EMI_A8, EMI_A9, EMI_A10, EMI_A11, EMI_A12, EMI_A13,
EMI_A14, EMI_BA0, EMI_BA1, EMI_BA2, EMI_CASN, EMI_RASN, EMI_WEN,
EMI_CE0N, EMI_CE1N, EMI_CKE,
/* Debug UART */
AUART0_RTS_DUART_TX | VE_3_3V | STRENGTH(S8MA),
AUART0_CTS_DUART_RX | VE_3_3V | STRENGTH(S8MA),
};
static noinline void karo_tx28_init(void)
{
int i;
/* initialize muxing */
for (i = 0; i < ARRAY_SIZE(iomux_pads); i++)
imx_gpio_mode(iomux_pads[i]);
pr_debug("initializing power...\n");
mx28_power_init(POWER_USE_BATTERY_INPUT | POWER_ENABLE_4P2,
&mx28_power_default);
pr_debug("initializing SDRAM...\n");
/* EMI_CLK of 480 / 2 * (18/21) = 205.7 MHz */
mxs_mem_init_clock(2, 21);
mx28_mem_init(PINCTRL_EMI_DS_CTRL_DDR_MODE_DDR2,
mx28_dram_vals_default);
pr_debug("DONE\n");
}
ENTRY_FUNCTION(prep_start_barebox_karo_tx28, r0, r1, r2)
{
void (*back)(unsigned long) = (void *)get_lr();
relocate_to_current_adr();
setup_c();
karo_tx28_init();
back(0);
}
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