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authorTom Rini <trini@konsulko.com>2020-01-06 17:07:49 -0500
committerTom Rini <trini@konsulko.com>2020-01-06 17:07:49 -0500
commit5a8fa095cb848c60c630a83edf30d4fc46101e90 (patch)
tree66652768520899ddea6a24a608c1be4ed6ecfcde /arch/x86/cpu/intel_common/fast_spi.c
parent0b0c6af38738f2c132cfd41a240889acaa031c8f (diff)
parent8fbbec12f7d2c18f8883f3371cfca74a98b5dd87 (diff)
downloadu-boot-5a8fa095cb848c60c630a83edf30d4fc46101e90.tar.gz
Merge branch 'next'WIP/06Jan2020
Bring in the following merges: commit 8fbbec12f7d2c18f8883f3371cfca74a98b5dd87 Merge: 87f69f467a83 63618e71e89b Author: Tom Rini <trini@konsulko.com> Date: Fri Jan 3 09:48:47 2020 -0500 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq into next - updates and fixes on ls1028a, lx2, ls1046a, MC-DPSPARSER support commit 87f69f467a8335b171c71bf217d2625d515acd7c Merge: c0912f9bbfb2 4466b9970319 Author: Tom Rini <trini@konsulko.com> Date: Tue Dec 24 08:18:19 2019 -0500 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-mpc85xx into next - Enable DM driver on ppc/km boards - Enable DM_USB for some of NXP powerpc platforms: P5040, T4240, T208x, T104x, P4080, P2041, P2020, P1020, P3041 - Some updates in mpc85xx-ddr driver, km boards commit c0912f9bbfb26dd03d189953678691b799d35b6e Merge: 533c9f5714bd a1d6dc3f8407 Author: Tom Rini <trini@konsulko.com> Date: Wed Dec 18 07:20:19 2019 -0500 Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-x86 into next - Various x86 common codes updated for TPL/SPL - I2C designware driver updated for PCI - ICH SPI driver updated to support Apollo Lake - Add Intel FSP2 base support - Intel Apollo Lake platform specific drivers support - Add a new board Google Chromebook Coral commit 533c9f5714bdba79dc6f2629284d4c1a08a611d1 Merge: 553cb0688782 033e18b47bd0 Author: Tom Rini <trini@konsulko.com> Date: Tue Dec 17 07:53:08 2019 -0500 Merge tag '20191217-for-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c into next i2c: for next - misc: i2c_eeprom: Add partition support and add ability to query size of eeprom device and partitions - i2c common: add support for offset overflow in to address and add sandbox tests for it. commit 553cb06887825314e74a9bdac337467c77d1db88 Merge: f39abbbc531e b4f98b3b16ec Author: Tom Rini <trini@konsulko.com> Date: Thu Dec 12 08:18:59 2019 -0500 Merge tag 'dm-next-13dec19' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm into next buildman improvements including toolchain environment feature sandbox unicode support in serial
Diffstat (limited to 'arch/x86/cpu/intel_common/fast_spi.c')
-rw-r--r--arch/x86/cpu/intel_common/fast_spi.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/x86/cpu/intel_common/fast_spi.c b/arch/x86/cpu/intel_common/fast_spi.c
new file mode 100644
index 0000000000..a6e3d0a5bf
--- /dev/null
+++ b/arch/x86/cpu/intel_common/fast_spi.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/cpu_common.h>
+#include <asm/fast_spi.h>
+#include <asm/pci.h>
+
+/*
+ * Returns bios_start and fills in size of the BIOS region.
+ */
+static ulong fast_spi_get_bios_region(struct fast_spi_regs *regs,
+ uint *bios_size)
+{
+ ulong bios_start, bios_end;
+
+ /*
+ * BIOS_BFPREG provides info about BIOS-Flash Primary Region Base and
+ * Limit. Base and Limit fields are in units of 4K.
+ */
+ u32 val = readl(&regs->bfp);
+
+ bios_start = (val & SPIBAR_BFPREG_PRB_MASK) << 12;
+ bios_end = (((val & SPIBAR_BFPREG_PRL_MASK) >>
+ SPIBAR_BFPREG_PRL_SHIFT) + 1) << 12;
+ *bios_size = bios_end - bios_start;
+
+ return bios_start;
+}
+
+int fast_spi_get_bios_mmap(pci_dev_t pdev, ulong *map_basep, uint *map_sizep,
+ uint *offsetp)
+{
+ struct fast_spi_regs *regs;
+ ulong bar, base, mmio_base;
+
+ /* Special case to find mapping without probing the device */
+ pci_x86_read_config(pdev, PCI_BASE_ADDRESS_0, &bar, PCI_SIZE_32);
+ mmio_base = bar & PCI_BASE_ADDRESS_MEM_MASK;
+ regs = (struct fast_spi_regs *)mmio_base;
+ base = fast_spi_get_bios_region(regs, map_sizep);
+ *map_basep = (u32)-*map_sizep - base;
+ *offsetp = base;
+
+ return 0;
+}
+
+int fast_spi_early_init(pci_dev_t pdev, ulong mmio_base)
+{
+ /* Program Temporary BAR for SPI */
+ pci_x86_write_config(pdev, PCI_BASE_ADDRESS_0,
+ mmio_base | PCI_BASE_ADDRESS_SPACE_MEMORY,
+ PCI_SIZE_32);
+
+ /* Enable Bus Master and MMIO Space */
+ pci_x86_clrset_config(pdev, PCI_COMMAND, 0, PCI_COMMAND_MASTER |
+ PCI_COMMAND_MEMORY, PCI_SIZE_8);
+
+ /*
+ * Disable the BIOS write protect so write commands are allowed.
+ * Enable Prefetching and caching.
+ */
+ pci_x86_clrset_config(pdev, SPIBAR_BIOS_CONTROL,
+ SPIBAR_BIOS_CONTROL_EISS |
+ SPIBAR_BIOS_CONTROL_CACHE_DISABLE,
+ SPIBAR_BIOS_CONTROL_WPD |
+ SPIBAR_BIOS_CONTROL_PREFETCH_ENABLE, PCI_SIZE_8);
+
+ return 0;
+}