Merge tag 'u-boot-atmel-fixes-2020.07-a' of https://gitlab.denx.de/u-boot/custodians...
[oweals/u-boot.git] / arch / x86 / cpu / apollolake / fsp_m.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2019 Google LLC
4  * Written by Simon Glass <sjg@chromium.org>
5  */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <log.h>
10 #include <asm/arch/iomap.h>
11 #include <asm/arch/fsp_bindings.h>
12 #include <asm/fsp2/fsp_internal.h>
13 #include <dm/uclass-internal.h>
14
15 int fspm_update_config(struct udevice *dev, struct fspm_upd *upd)
16 {
17         struct fsp_m_config *cfg = &upd->config;
18         struct fspm_arch_upd *arch = &upd->arch;
19         ofnode node;
20
21         arch->nvs_buffer_ptr = NULL;
22         prepare_mrc_cache(upd);
23         arch->stack_base = (void *)0xfef96000;
24         arch->boot_loader_tolum_size = 0;
25         arch->boot_mode = FSP_BOOT_WITH_FULL_CONFIGURATION;
26
27         node = dev_ofnode(dev);
28         if (!ofnode_valid(node))
29                 return log_msg_ret("fsp-m settings", -ENOENT);
30
31         return fsp_m_update_config_from_dtb(node, cfg);
32 }
33
34 /*
35  * The FSP-M binary appears to break the SPI controller. It can be fixed by
36  * writing the BAR again, so do that here
37  */
38 int fspm_done(struct udevice *dev)
39 {
40         struct udevice *spi;
41         int ret;
42
43         /* Don't probe the device, since that reads the BAR */
44         ret = uclass_find_first_device(UCLASS_SPI, &spi);
45         if (ret)
46                 return log_msg_ret("SPI", ret);
47         if (!spi)
48                 return log_msg_ret("no SPI", -ENODEV);
49
50         dm_pci_write_config32(spi, PCI_BASE_ADDRESS_0,
51                               IOMAP_SPI_BASE | PCI_BASE_ADDRESS_SPACE_MEMORY);
52
53         return 0;
54 }