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u-boot/arch/x86/cpu/broadwell/sdram.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
/*
* Copyright (c) 2016 Google, Inc
*
* From coreboot src/soc/intel/broadwell/romstage/raminit.c
*/
#include <common.h>
#include <dm.h>
#include <pci.h>
#include <syscon.h>
#include <asm/cpu.h>
#include <asm/io.h>
#include <asm/lpc_common.h>
#include <asm/mrccache.h>
#include <asm/mrc_common.h>
#include <asm/mtrr.h>
#include <asm/pci.h>
#include <asm/arch/iomap.h>
#include <asm/arch/me.h>
#include <asm/arch/pch.h>
#include <asm/arch/pei_data.h>
#include <asm/arch/pm.h>
ulong board_get_usable_ram_top(ulong total_size)
{
return mrc_common_board_get_usable_ram_top(total_size);
}
board_f: Drop setup_dram_config() wrapper By making dram_init_banksize() return an error code we can drop the wrapper. Adjust this and clean up all implementations. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
2017-03-31 14:40:32 +00:00
int dram_init_banksize(void)
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
{
mrc_common_dram_init_banksize();
board_f: Drop setup_dram_config() wrapper By making dram_init_banksize() return an error code we can drop the wrapper. Adjust this and clean up all implementations. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
2017-03-31 14:40:32 +00:00
return 0;
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
}
static unsigned long get_top_of_ram(struct udevice *dev)
{
/*
* Base of DPR is top of usable DRAM below 4GiB. The register has
* 1 MiB alignment and reports the TOP of the range, the base
* must be calculated from the size in MiB in bits 11:4.
*/
u32 dpr, tom;
dm_pci_read_config32(dev, DPR, &dpr);
tom = dpr & ~((1 << 20) - 1);
debug("dpt %08x tom %08x\n", dpr, tom);
/* Subtract DMA Protected Range size if enabled */
if (dpr & DPR_EPM)
tom -= (dpr & DPR_SIZE_MASK) << 16;
return (unsigned long)tom;
}
/**
* sdram_find() - Find available memory
*
* This is a bit complicated since on x86 there are system memory holes all
* over the place. We create a list of available memory blocks
*
* @dev: Northbridge device
*/
static int sdram_find(struct udevice *dev)
{
struct memory_info *info = &gd->arch.meminfo;
ulong top_of_ram;
top_of_ram = get_top_of_ram(dev);
mrc_add_memory_area(info, 0, top_of_ram);
/* Add MTRRs for memory */
mtrr_add_request(MTRR_TYPE_WRBACK, 0, 2ULL << 30);
return 0;
}
static int prepare_mrc_cache(struct pei_data *pei_data)
{
struct mrc_data_container *mrc_cache;
struct mrc_region entry;
int ret;
ret = mrccache_get_region(NULL, &entry);
if (ret)
return ret;
mrc_cache = mrccache_find_current(&entry);
if (!mrc_cache)
return -ENOENT;
pei_data->saved_data = mrc_cache->data;
pei_data->saved_data_size = mrc_cache->data_size;
debug("%s: at %p, size %x checksum %04x\n", __func__,
pei_data->saved_data, pei_data->saved_data_size,
mrc_cache->checksum);
return 0;
}
int dram_init(void)
{
struct pei_data _pei_data __aligned(8);
struct pei_data *pei_data = &_pei_data;
struct udevice *dev, *me_dev, *pch_dev;
struct chipset_power_state ps;
const void *spd_data;
int ret, size;
memset(pei_data, '\0', sizeof(struct pei_data));
/* Print ME state before MRC */
ret = syscon_get_by_driver_data(X86_SYSCON_ME, &me_dev);
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
if (ret) {
debug("Cannot get ME (err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
intel_me_status(me_dev);
/* Save ME HSIO version */
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
ret = uclass_first_device_err(UCLASS_PCH, &pch_dev);
if (ret) {
debug("Cannot get PCH (err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
power_state_get(pch_dev, &ps);
intel_me_hsio_version(me_dev, &ps.hsio_version, &ps.hsio_checksum);
broadwell_fill_pei_data(pei_data);
mainboard_fill_pei_data(pei_data);
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &dev);
if (ret) {
debug("Cannot get Northbridge (err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
size = 256;
ret = mrc_locate_spd(dev, size, &spd_data);
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
if (ret) {
debug("Cannot locate SPD (err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
memcpy(pei_data->spd_data[0][0], spd_data, size);
memcpy(pei_data->spd_data[1][0], spd_data, size);
ret = prepare_mrc_cache(pei_data);
if (ret)
debug("prepare_mrc_cache failed: %d\n", ret);
debug("PEI version %#x\n", pei_data->pei_version);
ret = mrc_common_init(dev, pei_data, true);
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
if (ret) {
debug("mrc_common_init() failed(err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
debug("Memory init done\n");
ret = sdram_find(dev);
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
if (ret) {
debug("sdram_find() failed (err=%d)\n", ret);
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
return ret;
x86: broadwell: Improve SDRAM debugging output Add debugging during SDRAM init so that problems are easier to diagnose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-26 03:58:48 +00:00
}
x86: broadwell: Add support for SDRAM setup Broadwell uses a binary blob called the memory reference code (MRC) to start up its SDRAM. This is similar to ivybridge so we can mostly use common code for running this blob. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-12 05:07:26 +00:00
gd->ram_size = gd->arch.meminfo.total_32bit_memory;
debug("RAM size %llx\n", (unsigned long long)gd->ram_size);
debug("MRC output data length %#x at %p\n", pei_data->data_to_save_size,
pei_data->data_to_save);
/* S3 resume: don't save scrambler seed or MRC data */
if (pei_data->boot_mode != SLEEP_STATE_S3) {
/*
* This will be copied to SDRAM in reserve_arch(), then written
* to SPI flash in mrccache_save()
*/
gd->arch.mrc_output = (char *)pei_data->data_to_save;
gd->arch.mrc_output_len = pei_data->data_to_save_size;
}
gd->arch.pei_meminfo = pei_data->meminfo;
return 0;
}
/* Use this hook to save our SDRAM parameters */
int misc_init_r(void)
{
int ret;
ret = mrccache_save();
if (ret)
printf("Unable to save MRC data: %d\n", ret);
else
debug("Saved MRC cache data\n");
return 0;
}
static const struct udevice_id broadwell_syscon_ids[] = {
{ .compatible = "intel,me", .data = X86_SYSCON_ME },
{ }
};
U_BOOT_DRIVER(syscon_intel_me) = {
.name = "intel_me_syscon",
.id = UCLASS_SYSCON,
.of_match = broadwell_syscon_ids,
};
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