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libboard_zynq: fix access to "full" 1022 MB on target_zc706

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This commit is contained in:
Astro 2020-05-09 02:32:29 +02:00
parent 66cd0c7630
commit 3e02980c20
1 changed files with 11 additions and 1 deletions
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12
libboard_zynq/src/ddr/mod.rs
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@ -183,6 +183,14 @@ impl DdrRam {
/// Reset DDR controller /// Reset DDR controller
fn reset_ddrc(&mut self) { 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);
}
#[cfg(feature = "target_zc706")] #[cfg(feature = "target_zc706")]
let width = regs::DataBusWidth::Width32bit; let width = regs::DataBusWidth::Width32bit;
#[cfg(feature = "target_cora_z7_10")] #[cfg(feature = "target_cora_z7_10")]
@ -209,9 +217,11 @@ impl DdrRam {
0x0010_0000 as *mut _ 0x0010_0000 as *mut _
} }
/// actually there's 1 MB more but starting at 0x0000_0000
/// overlaps with OCM.
pub fn size(&self) -> usize { pub fn size(&self) -> usize {
#[cfg(feature = "target_zc706")] #[cfg(feature = "target_zc706")]
let megabytes = 511; let megabytes = 1022;
#[cfg(feature = "target_cora_z7_10")] #[cfg(feature = "target_cora_z7_10")]
let megabytes = 511; let megabytes = 511;