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| author | Lee Leahy <leroy.p.leahy@intel.com> | 2016-07-10 17:09:24 -0700 |
|---|---|---|
| committer | Lee Leahy <leroy.p.leahy@intel.com> | 2016-07-12 18:50:47 +0200 |
| commit | 660c67a01f93817efebf312c5f6d685e8329312e (patch) | |
| tree | dbcc8d8c6aee76be9906817d641410d72aa323ef /src/soc/intel/quark/reg_access.c | |
| parent | 89186b2eb8167b56bf76d9cc03587d678b9bc661 (diff) | |
| download | coreboot-660c67a01f93817efebf312c5f6d685e8329312e.tar.xz | |
soc/intel/quark: Add host bridge access support
Add host bridge register access routines and macros.
TEST=Build and run on Galileo Gen2
Change-Id: I52eb6a68e99533fbb69c0ae1e6d581e4c4fab9d2
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15593
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/intel/quark/reg_access.c')
| -rw-r--r-- | src/soc/intel/quark/reg_access.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/soc/intel/quark/reg_access.c b/src/soc/intel/quark/reg_access.c index 1dd0d3c7db..c4688076ed 100644 --- a/src/soc/intel/quark/reg_access.c +++ b/src/soc/intel/quark/reg_access.c @@ -120,6 +120,24 @@ static void reg_gpio_write(uint32_t reg_address, uint32_t value) *get_gpio_address(reg_address) = value; } +uint32_t reg_host_bridge_unit_read(uint32_t reg_address) +{ + /* Read the host bridge register */ + mea_write(reg_address); + mcr_write(QUARK_OPCODE_READ, QUARK_NC_HOST_BRIDGE_SB_PORT_ID, + reg_address); + return mdr_read(); +} + +static void reg_host_bridge_unit_write(uint32_t reg_address, uint32_t value) +{ + /* Write the host bridge register */ + mea_write(reg_address); + mdr_write(value); + mcr_write(QUARK_OPCODE_WRITE, QUARK_NC_HOST_BRIDGE_SB_PORT_ID, + reg_address); +} + uint32_t reg_legacy_gpio_read(uint32_t reg_address) { /* Read the legacy GPIO register */ @@ -225,6 +243,11 @@ static uint64_t reg_read(struct reg_script_context *ctx) value = reg_gpio_read(step->reg); break; + case HOST_BRIDGE: + ctx->display_prefix = "Host Bridge"; + value = reg_host_bridge_unit_read(step->reg); + break; + case LEG_GPIO_REGS: ctx->display_prefix = "Legacy GPIO"; value = reg_legacy_gpio_read(step->reg); @@ -274,6 +297,11 @@ static void reg_write(struct reg_script_context *ctx) reg_gpio_write(step->reg, (uint32_t)step->value); break; + case HOST_BRIDGE: + ctx->display_prefix = "Host Bridge"; + reg_host_bridge_unit_write(step->reg, (uint32_t)step->value); + break; + case LEG_GPIO_REGS: ctx->display_prefix = "Legacy GPIO"; reg_legacy_gpio_write(step->reg, (uint32_t)step->value); |