diff options
| author | Simon Glass <sjg@chromium.org> | 2016-01-17 16:11:50 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-01-24 12:09:41 +0800 |
| commit | c02a4242c88fa42d2a08e979551a85b45c946b8e (patch) | |
| tree | cddfb88ad752bc1e7c5cd709f931ea4bdbfc0ceb /arch/x86/cpu/ivybridge/sdram.c | |
| parent | b32375d070e7f9717293bc55aebdba3130bee72a (diff) | |
x86: ivybridge: Convert SDRAM init to use driver model
SDRAM init needs access to the Northbridge controller and the Intel
Management Engine device. Add the latter to the device tree and convert all
of this code to driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/cpu/ivybridge/sdram.c')
| -rw-r--r-- | arch/x86/cpu/ivybridge/sdram.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c index 6105cc0259..696351b7bf 100644 --- a/arch/x86/cpu/ivybridge/sdram.c +++ b/arch/x86/cpu/ivybridge/sdram.c @@ -286,7 +286,8 @@ static int recovery_mode_enabled(void) * @dev: Northbridge device * @pei_data: configuration data for UEFI PEI reference code */ -int sdram_initialise(struct udevice *dev, struct pei_data *pei_data) +int sdram_initialise(struct udevice *dev, struct udevice *me_dev, + struct pei_data *pei_data) { unsigned version; const char *data; @@ -296,10 +297,10 @@ int sdram_initialise(struct udevice *dev, struct pei_data *pei_data) report_platform_info(); /* Wait for ME to be ready */ - ret = intel_early_me_init(); + ret = intel_early_me_init(me_dev); if (ret) return ret; - ret = intel_early_me_uma_size(); + ret = intel_early_me_uma_size(me_dev); if (ret < 0) return ret; @@ -378,9 +379,9 @@ int sdram_initialise(struct udevice *dev, struct pei_data *pei_data) dm_pci_read_config16(dev, PCI_DEVICE_ID, &done); done &= BASE_REV_MASK; if (BASE_REV_SNB == done) - intel_early_me_init_done(ME_INIT_STATUS_SUCCESS); + intel_early_me_init_done(dev, me_dev, ME_INIT_STATUS_SUCCESS); else - intel_early_me_status(); + intel_early_me_status(me_dev); post_system_agent_init(pei_data); report_memory_config(); @@ -730,7 +731,7 @@ int dram_init(void) { 0, 4, 0x0000 }, /* P13= Empty */ }, }; - struct udevice *dev; + struct udevice *dev, *me_dev; int ret; ret = uclass_first_device(UCLASS_NORTHBRIDGE, &dev); @@ -738,12 +739,17 @@ int dram_init(void) return ret; if (!dev) return -ENODEV; + ret = uclass_first_device(UCLASS_SYSCON, &me_dev); + if (ret) + return ret; + if (!me_dev) + return -ENODEV; debug("Boot mode %d\n", gd->arch.pei_boot_mode); debug("mrc_input %p\n", pei_data.mrc_input); pei_data.boot_mode = gd->arch.pei_boot_mode; ret = copy_spd(&pei_data); if (!ret) - ret = sdram_initialise(dev, &pei_data); + ret = sdram_initialise(dev, me_dev, &pei_data); if (ret) return ret; |