178 lines
5.4 KiB
C
178 lines
5.4 KiB
C
#include <common.h>
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#include <linux/sizes.h>
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#include <asm/barebox-arm-head.h>
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#include <asm/barebox-arm.h>
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#include <mach/imx23-regs.h>
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#include <mach/init.h>
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#include <io.h>
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#include <debug_ll.h>
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#include <mach/iomux.h>
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ENTRY_FUNCTION(start_barebox_olinuxino_imx23, r0, r1, r2)
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{
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barebox_arm_entry(IMX_MEMORY_BASE, SZ_64M, NULL);
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}
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static const uint32_t pad_setup[] = {
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/* debug port */
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PWM1_DUART_TX | STRENGTH(S4MA), /* PWM0/DUART_TXD - U_DEBUG PIN 2 */
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PWM0_DUART_RX | STRENGTH(S4MA), /* PWM0/DUART_RXD - U_DEBUG PIN 1 */
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/* SDRAM */
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EMI_D0 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D1 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D2 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D3 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D4 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D5 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D6 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D7 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D8 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D9 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D10 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D11 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D12 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D13 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D14 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_D15 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_DQM0 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_DQM1 | VE_2_5V | STRENGTH(S12MA) | PULLUP(1),
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EMI_DQS0 | VE_2_5V | STRENGTH(S12MA),
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EMI_DQS1 | VE_2_5V | STRENGTH(S12MA),
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EMI_CLK | VE_2_5V | STRENGTH(S12MA),
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EMI_CLKN | VE_2_5V | STRENGTH(S12MA),
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EMI_A0 | VE_2_5V | STRENGTH(S12MA),
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EMI_A1 | VE_2_5V | STRENGTH(S12MA),
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EMI_A2 | VE_2_5V | STRENGTH(S12MA),
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EMI_A3 | VE_2_5V | STRENGTH(S12MA),
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EMI_A4 | VE_2_5V | STRENGTH(S12MA),
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EMI_A5 | VE_2_5V | STRENGTH(S12MA),
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EMI_A6 | VE_2_5V | STRENGTH(S12MA),
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EMI_A7 | VE_2_5V | STRENGTH(S12MA),
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EMI_A8 | VE_2_5V | STRENGTH(S12MA),
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EMI_A9 | VE_2_5V | STRENGTH(S12MA),
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EMI_A10 | VE_2_5V | STRENGTH(S12MA),
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EMI_A11 | VE_2_5V | STRENGTH(S12MA),
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EMI_A12 | VE_2_5V | STRENGTH(S12MA),
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EMI_BA0 | VE_2_5V | STRENGTH(S12MA),
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EMI_BA1 | VE_2_5V | STRENGTH(S12MA),
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EMI_CASN | VE_2_5V | STRENGTH(S12MA),
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EMI_CE0N | VE_2_5V | STRENGTH(S12MA),
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EMI_CE1N | VE_2_5V | STRENGTH(S12MA),
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EMI_CKE | VE_2_5V | STRENGTH(S12MA),
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EMI_RASN | VE_2_5V | STRENGTH(S12MA),
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EMI_WEN | VE_2_5V | STRENGTH(S12MA),
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/* auart */
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I2C_SDA_AUART1_RX | STRENGTH(S4MA),
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I2C_CLK_AUART1_TX | STRENGTH(S4MA),
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/* LCD */
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LCD_D17 | STRENGTH(S12MA), /*PIN18/LCD_D17 - GPIO PIN 3 */
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LCD_D16 | STRENGTH(S12MA),
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LCD_D15 | STRENGTH(S12MA),
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LCD_D14 | STRENGTH(S12MA),
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LCD_D13 | STRENGTH(S12MA),
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LCD_D12 | STRENGTH(S12MA),
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LCD_D11 | STRENGTH(S12MA),
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LCD_D10 | STRENGTH(S12MA),
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LCD_D9 | STRENGTH(S12MA),
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LCD_D8 | STRENGTH(S12MA),
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LCD_D7 | STRENGTH(S12MA),
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LCD_D6 | STRENGTH(S12MA),
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LCD_D5 | STRENGTH(S12MA),
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LCD_D4 | STRENGTH(S12MA),
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LCD_D3 | STRENGTH(S12MA),
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LCD_D2 | STRENGTH(S12MA), /* PIN3/LCD_D02 - GPIO PIN 31*/
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LCD_D1 | STRENGTH(S12MA), /* PIN2/LCD_D01 - GPIO PIN 33*/
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LCD_D0 | STRENGTH(S12MA), /* PIN1/LCD_D00 - GPIO PIN 35*/
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LCD_CS, /* PIN26/LCD_CS - GPIO PIN 20*/
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LCD_RS, /* PIN25/LCD_RS - GPIO PIN 18*/
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LCD_WR, /* PIN24/LCD_WR - GPIO PIN 16*/
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LCD_RESET, /* PIN23/LCD_DISP - GPIO PIN 14*/
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LCD_ENABE | STRENGTH(S12MA), /* PIN22/LCD_EN/I2C_SCL - GPIO PIN 12*/
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LCD_VSYNC | STRENGTH(S12MA), /* PIN21/LCD_HSYNC/I2C_SDA- GPIO PIN 10*/
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LCD_HSYNC | STRENGTH(S12MA), /* PIN20/LCD_VSYNC - GPIO PIN 8*/
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LCD_DOTCLOCK | STRENGTH(S12MA), /* PIN19/LCD_DOTCLK - GPIO PIN 6*/
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/* SD card interface */
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SSP1_DATA0 | PULLUP(1),
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SSP1_DATA1 | PULLUP(1),
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SSP1_DATA2 | PULLUP(1),
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SSP1_DATA3 | PULLUP(1),
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SSP1_SCK,
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SSP1_CMD | PULLUP(1),
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SSP1_DETECT | PULLUP(1),
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/* LED */
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SSP1_DETECT_GPIO | GPIO_OUT | GPIO_VALUE(1),
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/* GPIO - USB hub LAN9512-JZX*/
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GPMI_ALE_GPIO | GPIO_OUT | GPIO_VALUE(1),
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};
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/* Fine-tune the DRAM configuration. */
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void imx23_olinuxino_adjust_memory_params(uint32_t *dram_vals)
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{
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/* Enable Auto Precharge. */
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dram_vals[3] |= 1 << 8;
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/* Enable Fast Writes. */
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dram_vals[5] |= 1 << 8;
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/* tEMRS = 3*tCK */
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dram_vals[10] &= ~(0x3 << 8);
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dram_vals[10] |= (0x3 << 8);
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/* CASLAT = 3*tCK */
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dram_vals[11] &= ~(0x3 << 0);
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dram_vals[11] |= (0x3 << 0);
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/* tCKE = 1*tCK */
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dram_vals[12] &= ~(0x7 << 0);
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dram_vals[12] |= (0x1 << 0);
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/* CASLAT_LIN_GATE = 3*tCK , CASLAT_LIN = 3*tCK, tWTR=2*tCK */
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dram_vals[13] &= ~((0xf << 16) | (0xf << 24) | (0xf << 0));
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dram_vals[13] |= (0x6 << 16) | (0x6 << 24) | (0x2 << 0);
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/* tDAL = 6*tCK */
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dram_vals[15] &= ~(0xf << 16);
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dram_vals[15] |= (0x6 << 16);
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/* tREF = 1040*tCK */
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dram_vals[26] &= ~0xffff;
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dram_vals[26] |= 0x0410;
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/* tRAS_MAX = 9334*tCK */
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dram_vals[32] &= ~0xffff;
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dram_vals[32] |= 0x2475;
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}
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static noinline void imx23_olinuxino_init(void)
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{
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int i;
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/* initizalize gpios */
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for (i = 0; i < ARRAY_SIZE(pad_setup); i++)
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imx_gpio_mode(pad_setup[i]);
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pr_debug("initializing power...\n");
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mx23_power_init(0, 0, 1);
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pr_debug("initializing SDRAM...\n");
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imx23_olinuxino_adjust_memory_params(mx23_dram_vals);
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mx23_mem_init();
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pr_debug("DONE\n");
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}
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ENTRY_FUNCTION(prep_start_barebox_olinuxino_imx23, r0, r1, r2)
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{
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void (*back)(unsigned long) = (void *)get_lr();
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relocate_to_current_adr();
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setup_c();
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imx23_olinuxino_init();
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back(0);
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}
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