diff options
| author | Nico Huber <nico.huber@secunet.com> | 2019-02-13 15:11:09 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-04-15 14:03:27 +0000 |
| commit | 63be06008d439cba7cb113df20faf23ed76e4b79 (patch) | |
| tree | f82341e652c95be9e5c551a774ff333820540ca3 /src/southbridge | |
| parent | 9ff2af2b479e699a77cdb5de3835be25129c37ef (diff) | |
sb/intel/bd82x6x/sata: Add legacy mode support
Legacy mode is supposed to help with IDE controller drivers that don't
know Intel's "native" IDE interface. We extend the `sata_mode` NVRAM
variable to provide the following choices:
* 0 "AHCI" - AHCI interface
* 1 "Compatible" - Intel's "native" interface
* 2 "Legacy" - Legacy interface
Change-Id: I0e7a4befa02772f620602fa2a92c3583895d4d1c
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39828
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/sata.c | 77 |
1 files changed, 70 insertions, 7 deletions
diff --git a/src/southbridge/intel/bd82x6x/sata.c b/src/southbridge/intel/bd82x6x/sata.c index c1b61f24c6..6c6e5be598 100644 --- a/src/southbridge/intel/bd82x6x/sata.c +++ b/src/southbridge/intel/bd82x6x/sata.c @@ -28,6 +28,65 @@ static inline void sir_write(struct device *dev, int idx, u32 value) pci_write_config32(dev, SATA_SIRD, value); } +static void sata_read_resources(struct device *dev) +{ + struct resource *res; + + pci_dev_read_resources(dev); + + /* Assign fixed resources for IDE legacy mode */ + + u8 sata_mode = 0; + get_option(&sata_mode, "sata_mode"); + if (sata_mode != 2) + return; + + res = find_resource(dev, PCI_BASE_ADDRESS_0); + if (res) { + res->base = 0x1f0; + res->size = 8; + res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; + } + + res = find_resource(dev, PCI_BASE_ADDRESS_1); + if (res) { + res->base = 0x3f4; + res->size = 4; + res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; + } + + res = find_resource(dev, PCI_BASE_ADDRESS_2); + if (res) { + res->base = 0x170; + res->size = 8; + res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; + } + + res = find_resource(dev, PCI_BASE_ADDRESS_3); + if (res) { + res->base = 0x374; + res->size = 4; + res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; + } +} + +static void sata_set_resources(struct device *dev) +{ + /* work around bug in pci_dev_set_resources(), it bails out on FIXED */ + u8 sata_mode = 0; + get_option(&sata_mode, "sata_mode"); + if (sata_mode == 2) { + unsigned int i; + for (i = PCI_BASE_ADDRESS_0; i <= PCI_BASE_ADDRESS_3; i += 4) { + struct resource *const res = find_resource(dev, i); + if (res) + res->flags &= ~IORESOURCE_FIXED; + } + } + + pci_dev_set_resources(dev); +} + static void sata_init(struct device *dev) { u32 reg32; @@ -112,17 +171,21 @@ static void sata_init(struct device *dev) write32(abar + 0xa0, reg32); } else { /* IDE */ - printk(BIOS_DEBUG, "SATA: Controller in plain mode.\n"); /* Without AHCI BAR no memory decoding */ reg16 = pci_read_config16(dev, PCI_COMMAND); reg16 &= ~PCI_COMMAND_MEMORY; pci_write_config16(dev, PCI_COMMAND, reg16); - /* Native mode capable on both primary and secondary (0xa) - * or'ed with enabled (0x50) = 0xf - */ - pci_write_config8(dev, 0x09, 0x8f); + if (sata_mode == 1) { + /* Native mode on both primary and secondary. */ + pci_or_config8(dev, 0x09, 0x05); + printk(BIOS_DEBUG, "SATA: Controller in IDE compat mode.\n"); + } else { + /* Legacy mode on both primary and secondary. */ + pci_update_config8(dev, 0x09, ~0x05, 0x00); + printk(BIOS_DEBUG, "SATA: Controller in IDE legacy mode.\n"); + } /* Set timings */ pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | @@ -234,8 +297,8 @@ static struct pci_operations sata_pci_ops = { }; static struct device_operations sata_ops = { - .read_resources = pci_dev_read_resources, - .set_resources = pci_dev_set_resources, + .read_resources = sata_read_resources, + .set_resources = sata_set_resources, .enable_resources = pci_dev_enable_resources, .acpi_fill_ssdt = sata_fill_ssdt, .init = sata_init, |