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-rw-r--r--src/mainboard/google/snow/mainboard.h10
-rw-r--r--src/mainboard/google/snow/romstage.c92
-rw-r--r--src/mainboard/google/snow/wakeup.c14
3 files changed, 59 insertions, 57 deletions
diff --git a/src/mainboard/google/snow/mainboard.h b/src/mainboard/google/snow/mainboard.h
index 63a2c18c63..5060b720f3 100644
--- a/src/mainboard/google/snow/mainboard.h
+++ b/src/mainboard/google/snow/mainboard.h
@@ -36,14 +36,14 @@ enum snow_board_config {
int board_get_config(void);
enum {
- BOARD_IS_NOT_WAKEUP, // A normal boot (not suspend/resume).
- BOARD_WAKEUP_DIRECT, // A wake up event that can be resumed any time.
- BOARD_WAKEUP_NEED_CLOCK_RESET, // A wake up event that must be resumed
+ SNOW_IS_NOT_WAKEUP, // A normal boot (not suspend/resume).
+ SNOW_WAKEUP_DIRECT, // A wake up event that can be resumed any time.
+ SNOW_WAKEUP_NEED_CLOCK_RESET, // A wake up event that must be resumed
// only after clock and memory
// controllers are re-initialized.
};
-int board_get_wakeup_state(void);
-void board_wakeup(void);
+int snow_get_wakeup_state(void);
+void snow_wakeup(void);
#endif /* MAINBOARD_H */
diff --git a/src/mainboard/google/snow/romstage.c b/src/mainboard/google/snow/romstage.c
index 6e312fa4ca..fd5cfcec4c 100644
--- a/src/mainboard/google/snow/romstage.c
+++ b/src/mainboard/google/snow/romstage.c
@@ -46,10 +46,16 @@
#define PMIC_BUS 0
#define MMC0_GPIO_PIN (58)
-static int setup_pmic(void)
+static void snow_setup_power(void)
{
int error = 0;
+ power_init();
+
+ /* Initialize I2C bus to configure PMIC. */
+ i2c_init(0, CONFIG_SYS_I2C_SPEED, 0x00);
+
+ printk(BIOS_DEBUG, "%s: Setting up PMIC...\n", __func__);
/*
* We're using CR1616 coin cell battery that is non-rechargeable
* battery. But, BBCHOSTEN bit of the BBAT Charger Register in
@@ -81,19 +87,19 @@ static int setup_pmic(void)
error |= max77686_enable_32khz_cp(PMIC_BUS);
- if (error)
- printk(BIOS_CRIT, "%s: Error during PMIC setup\n", __func__);
-
- return error;
+ if (error) {
+ printk(BIOS_CRIT, "%s: PMIC error: %#x\n", __func__, error);
+ die("Failed to intialize PMIC.\n");
+ }
}
-static void initialize_s5p_mshc(void)
+static void snow_setup_storage(void)
{
/* MMC0: Fixed, 8 bit mode, connected with GPIO. */
if (clock_set_mshci(PERIPH_ID_SDMMC0))
- printk(BIOS_CRIT, "Failed to set clock for SDMMC0.\n");
+ printk(BIOS_CRIT, "%s: Failed to set MMC0 clock.\n", __func__);
if (gpio_direction_output(MMC0_GPIO_PIN, 1)) {
- printk(BIOS_CRIT, "Unable to power on SDMMC0.\n");
+ printk(BIOS_CRIT, "%s: Unable to power on MMC0.\n", __func__);
}
gpio_set_pull(MMC0_GPIO_PIN, EXYNOS_GPIO_PULL_NONE);
gpio_set_drv(MMC0_GPIO_PIN, EXYNOS_GPIO_DRV_4X);
@@ -104,12 +110,12 @@ static void initialize_s5p_mshc(void)
exynos_pinmux_config(PERIPH_ID_SDMMC2, 0);
}
-static void graphics(void)
+static void snow_setup_graphics(void)
{
exynos_pinmux_config(PERIPH_ID_DPHPD, 0);
}
-static void chromeos_gpios(void)
+static void snow_setup_gpio(void)
{
struct exynos5_gpio_part1 *gpio_pt1;
struct exynos5_gpio_part2 *gpio_pt2;
@@ -137,53 +143,49 @@ static void chromeos_gpios(void)
s5p_gpio_set_pull(&gpio_pt2->x1, POWER_GPIO, EXYNOS_GPIO_PULL_NONE);
}
+static void snow_setup_memory(struct mem_timings *mem, int is_resume)
+{
+ printk(BIOS_SPEW, "man: 0x%x type: 0x%x, div: 0x%x, mhz: 0x%x\n",
+ mem->mem_manuf,
+ mem->mem_type,
+ mem->mpll_mdiv,
+ mem->frequency_mhz);
+ if (ddr3_mem_ctrl_init(mem, DMC_INTERLEAVE_SIZE, !is_resume)) {
+ die("Failed to initialize memory controller.\n");
+ }
+}
+
+static struct mem_timings *snow_setup_clock(void)
+{
+ struct mem_timings *mem = get_mem_timings();
+ struct arm_clk_ratios *arm_ratios = get_arm_clk_ratios();
+ if (!mem) {
+ die("Unable to auto-detect memory timings\n");
+ }
+ system_clock_init(mem, arm_ratios);
+ return mem;
+}
+
void main(void)
{
struct mem_timings *mem;
- struct arm_clk_ratios *arm_ratios;
- int ret;
void *entry;
- clock_set_rate(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
-
/* Clock must be initialized before console_init, otherwise you may need
* to re-initialize serial console drivers again. */
- mem = get_mem_timings();
- arm_ratios = get_arm_clk_ratios();
- system_clock_init(mem, arm_ratios);
+ mem = snow_setup_clock();
console_init();
+ snow_setup_power();
- i2c_init(0, CONFIG_SYS_I2C_SPEED, 0x00);
- if (power_init())
- power_shutdown();
- printk(BIOS_DEBUG, "%s: setting up pmic...\n", __func__);
- if (setup_pmic())
- power_shutdown();
-
- if (!mem) {
- printk(BIOS_CRIT, "Unable to auto-detect memory timings\n");
- while(1);
- }
- printk(BIOS_SPEW, "man: 0x%x type: 0x%x, div: 0x%x, mhz: 0x%x\n",
- mem->mem_manuf,
- mem->mem_type,
- mem->mpll_mdiv,
- mem->frequency_mhz);
-
- ret = ddr3_mem_ctrl_init(mem, DMC_INTERLEAVE_SIZE, 1);
- if (ret) {
- printk(BIOS_ERR, "Memory controller init failed, err: %x\n",
- ret);
- while(1);
- }
-
- initialize_s5p_mshc();
-
- chromeos_gpios();
+ snow_setup_memory(mem, 0);
- graphics();
+ snow_setup_storage();
+ snow_setup_gpio();
+ snow_setup_graphics();
+ /* Set SPI (primary CBFS media) clock to 50MHz. */
+ clock_set_rate(PERIPH_ID_SPI1, 50000000);
entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/coreboot_ram");
printk(BIOS_INFO, "entry is 0x%p, leaving romstage.\n", entry);
diff --git a/src/mainboard/google/snow/wakeup.c b/src/mainboard/google/snow/wakeup.c
index 33ea9d8fd1..8bb1724a2d 100644
--- a/src/mainboard/google/snow/wakeup.c
+++ b/src/mainboard/google/snow/wakeup.c
@@ -26,16 +26,16 @@
#include "mainboard.h"
-static int wakeup_need_reset(void)
+static int snow_wakeup_need_reset(void)
{
/* The "wake up" event is not reliable (known as "bad wakeup") and needs
* reset if GPIO value is high. */
return gpio_get_value(GPIO_Y10);
}
-void board_wakeup(void)
+void snow_wakeup(void)
{
- if (wakeup_need_reset())
+ if (snow_wakeup_need_reset())
power_reset();
power_init(); /* Ensure ps_hold_setup() for early wakeup. */
@@ -44,7 +44,7 @@ void board_wakeup(void)
die("Failed to wake up.\n");
}
-int board_get_wakeup_state()
+int snow_get_wakeup_state()
{
uint32_t status = power_read_reset_status();
@@ -53,10 +53,10 @@ int board_get_wakeup_state()
*/
if (status == S5P_CHECK_DIDLE || status == S5P_CHECK_LPA)
- return BOARD_WAKEUP_DIRECT;
+ return SNOW_WAKEUP_DIRECT;
if (status == S5P_CHECK_SLEEP)
- return BOARD_WAKEUP_NEED_CLOCK_RESET;
+ return SNOW_WAKEUP_NEED_CLOCK_RESET;
- return BOARD_IS_NOT_WAKEUP;
+ return SNOW_IS_NOT_WAKEUP;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 12:46:40 +0000