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zynq-rs
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libboard_zynq: configure ddr while keeping rstb low

This commit is contained in:
Astro 2020-11-08 22:47:59 +01:00
parent 7e22010d7d
commit 515d3bb381
1 changed files with 19 additions and 11 deletions
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30
libboard_zynq/src/ddr/mod.rs
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@ -44,8 +44,7 @@ impl DdrRam {
Self::configure_iob();
let regs = regs::RegisterBlock::ddrc();
let mut ddr = DdrRam { regs };
ddr.configure();
ddr.reset_ddrc();
ddr.reset_ddrc(|ddr| ddr.configure());
ddr
}
}
@ -319,15 +318,7 @@ impl DdrRam {
}
/// Reset DDR controller
fn reset_ddrc(&mut self) {
#[cfg(feature = "target_zc706")]
unsafe {
// row/column address bits
self.regs.dram_addr_map_bank.write(0x00000777);
self.regs.dram_addr_map_col.write(0xFFF00000);
self.regs.dram_addr_map_row.write(0x0F666666);
}
fn reset_ddrc<F: FnMut(&mut Self)>(&mut self, mut f: F) {
#[cfg(feature = "target_zc706")]
let width = regs::DataBusWidth::Width32bit;
#[cfg(feature = "target_cora_z7_10")]
@ -339,6 +330,23 @@ impl DdrRam {
.powerdown_en(false)
.data_bus_width(width)
);
f(self);
#[cfg(feature = "target_zc706")]
unsafe {
// row/column address bits
self.regs.dram_addr_map_bank.write(0x00000777);
self.regs.dram_addr_map_col.write(0xFFF00000);
self.regs.dram_addr_map_row.write(0x0F666666);
}
#[cfg(feature = "target_cora_z7_10")]
unsafe {
// row/column address bits
self.regs.dram_addr_map_bank.write(0x00000666);
self.regs.dram_addr_map_col.write(0xFFFF0000);
self.regs.dram_addr_map_row.write(0x0F555555);
}
self.regs.ddrc_ctrl.modify(|_, w| w
.soft_rstb(true)
.powerdown_en(false)